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dschneider pushed a commit to branch develop
in repository https://gitbox.apache.org/repos/asf/geode.git


The following commit(s) were added to refs/heads/develop by this push:
     new e084aa4  GEODE-8130: use a single region for redis Sets and Hashes  
(#5120)
e084aa4 is described below

commit e084aa4bdaed4d626e559fec4e7e64e1fbf93755
Author: Darrel Schneider <dschnei...@pivotal.io>
AuthorDate: Fri May 15 09:37:54 2020 -0700

    GEODE-8130: use a single region for redis Sets and Hashes  (#5120)
    
    * Replaced replicated metaRegion with a partitioned dataRegion.
    Currently the dataRegion is used the same way as the metaRegion
    except for sets and hashes which store their actual data in it.
    * Exception handling now correctly deals with FunctionException
    * Disabled a test until GEODE-8127 if fixed.
    * Now uses the ByteArrayWrapper as the key on the meta region
    and the locks map instead of using a String.
    Since a ByteArrayWrapper is used as the key in the data region
    this will end up saving memory.
    
    * Found a problem with redis dynamic region management.
    Some of the code was executing when we added a new set or hash to
    the metaDataRegion. It was only ignoring STRING and HLL.
    This caused some extra memory to be used for every redis set/hash.
    Now the dynamic region code is only used for lists and sortedSet.
    
    * This commit has some TODO comments of what looks like a bug in
    the dynamic region code when a new server is started. It looks
    like the new server will not create already existing dynamic regions.
    We could test this by starting one server, create a LIST, then
    start another server, and then shutdown the first server. Does
    the LIST still exist? If we change them not to use dynamic regions
    then this issue will go away.
---
 .../apache/geode/redis/GeodeRedisServerRule.java   |   4 +-
 .../org/apache/geode/redis/RedisDistDUnitTest.java |   5 +-
 .../apache/geode/redis/HashesIntegrationTest.java  |  62 -------
 .../geode/redis/RedisServerIntegrationTest.java    |   8 +-
 .../apache/geode/redis/StringsIntegrationTest.java |   4 +-
 .../geode/redis/sets/SRemIntegrationTest.java      |   2 +-
 .../geode/redis/sets/SetsIntegrationTest.java      |   4 +-
 .../codeAnalysis/sanctionedDataSerializables.txt   |   4 +
 .../redis/internal/ExecutionHandlerContext.java    |  19 +-
 .../geode/redis/internal/GeodeRedisServer.java     | 154 +++++++---------
 .../apache/geode/redis/internal/KeyRegistrar.java  | 147 ++++++++++++---
 .../geode/redis/internal/RedisConstants.java       |   2 -
 .../org/apache/geode/redis/internal/RedisData.java |  24 +++
 .../geode/redis/internal/RegionProvider.java       | 198 +++++++++++----------
 .../redis/internal/executor/CommandFunction.java   |  12 +-
 .../redis/internal/executor/EmptyRedisHash.java    |  26 ++-
 .../redis/internal/executor/FlushAllExecutor.java  |  10 +-
 .../redis/internal/executor/KeysExecutor.java      |  15 +-
 .../redis/internal/executor/RedisHashInRegion.java |  34 +++-
 .../redis/internal/executor/RenameExecutor.java    |  39 +++-
 .../redis/internal/executor/ScanExecutor.java      |   6 +-
 .../redis/internal/executor/hash/HDelExecutor.java |   9 +-
 .../internal/executor/hash/HExistsExecutor.java    |  18 +-
 .../internal/executor/hash/HGetAllExecutor.java    |   2 +-
 .../redis/internal/executor/hash/HGetExecutor.java |   4 +-
 .../internal/executor/hash/HIncrByExecutor.java    |  16 +-
 .../executor/hash/HIncrByFloatExecutor.java        |  13 +-
 .../internal/executor/hash/HKeysExecutor.java      |  23 +--
 .../redis/internal/executor/hash/HLenExecutor.java |  21 +--
 .../internal/executor/hash/HMGetExecutor.java      |   5 +-
 .../internal/executor/hash/HMSetExecutor.java      |   4 +-
 .../internal/executor/hash/HScanExecutor.java      |   7 +-
 .../redis/internal/executor/hash/HSetExecutor.java |   4 +-
 .../internal/executor/hash/HValsExecutor.java      |  16 +-
 .../redis/internal/executor/hash/HashExecutor.java |  42 +++--
 .../redis/internal/executor/hash/RedisHash.java    |  17 +-
 .../hash/RedisHashCommandsFunctionExecutor.java    |   5 +-
 .../redis/internal/executor/set/EmptyRedisSet.java |   9 +-
 .../redis/internal/executor/set/RedisSet.java      |  31 ++--
 .../internal/executor/set/RedisSetCommands.java    |   4 +-
 .../set/RedisSetCommandsFunctionExecutor.java      |  17 +-
 .../internal/executor/set/RedisSetInRegion.java    |  29 ++-
 .../redis/internal/executor/set/SAddExecutor.java  |   6 +-
 .../redis/internal/executor/set/SCardExecutor.java |   2 +-
 .../internal/executor/set/SIsMemberExecutor.java   |  19 +-
 .../internal/executor/set/SMembersExecutor.java    |   5 +-
 .../redis/internal/executor/set/SMoveExecutor.java |  11 +-
 .../redis/internal/executor/set/SPopExecutor.java  |   2 +-
 .../internal/executor/set/SRandMemberExecutor.java |   2 +-
 .../redis/internal/executor/set/SRemExecutor.java  |  18 +-
 .../redis/internal/executor/set/SScanExecutor.java |   2 +-
 .../redis/internal/executor/set/SetExecutor.java   |   5 +-
 .../redis/internal/executor/set/SetOpExecutor.java |   5 +-
 .../executor/set/SynchronizedStripedExecutor.java  |   2 +
 .../redis/internal/RegionProviderJUnitTest.java    |  11 +-
 .../executor/AbstractExecutorJUnitTest.java        |   8 -
 56 files changed, 600 insertions(+), 573 deletions(-)

diff --git 
a/geode-redis/src/commonTest/java/org/apache/geode/redis/GeodeRedisServerRule.java
 
b/geode-redis/src/commonTest/java/org/apache/geode/redis/GeodeRedisServerRule.java
index f46d4e9..5ca4e1b 100644
--- 
a/geode-redis/src/commonTest/java/org/apache/geode/redis/GeodeRedisServerRule.java
+++ 
b/geode-redis/src/commonTest/java/org/apache/geode/redis/GeodeRedisServerRule.java
@@ -70,8 +70,8 @@ public class GeodeRedisServerRule extends 
SerializableExternalResource {
     return server.getKeyRegistrar();
   }
 
-  public RegionProvider getRegionCache() {
-    return server.getRegionCache();
+  public RegionProvider getRegionProvider() {
+    return server.getRegionProvider();
   }
 
   public RedisLockService getLockService() {
diff --git 
a/geode-redis/src/distributedTest/java/org/apache/geode/redis/RedisDistDUnitTest.java
 
b/geode-redis/src/distributedTest/java/org/apache/geode/redis/RedisDistDUnitTest.java
index 36b46be..3b7a3a4 100644
--- 
a/geode-redis/src/distributedTest/java/org/apache/geode/redis/RedisDistDUnitTest.java
+++ 
b/geode-redis/src/distributedTest/java/org/apache/geode/redis/RedisDistDUnitTest.java
@@ -110,6 +110,7 @@ public class RedisDistDUnitTest implements Serializable {
   }
 
   @Test
+  @Ignore("GEODE-8127")
   public void testConcurrentSaddOperations_runWithoutException_orDataLoss()
       throws InterruptedException {
     List<String> set1 = new ArrayList<>();
@@ -118,6 +119,8 @@ public class RedisDistDUnitTest implements Serializable {
 
     final String setName = "keyset";
 
+    Jedis jedis = new Jedis(LOCALHOST, server1Port, JEDIS_TIMEOUT);
+
     AsyncInvocation<Void> remoteSaddInvocation =
         client1.invokeAsync(new ConcurrentSADDOperation(server1Port, setName, 
set1));
 
@@ -125,8 +128,6 @@ public class RedisDistDUnitTest implements Serializable {
 
     remoteSaddInvocation.await();
 
-    Jedis jedis = new Jedis(LOCALHOST, server1Port, JEDIS_TIMEOUT);
-
     Set<String> smembers = jedis.smembers(setName);
 
     assertThat(smembers).hasSize(setSize * 2);
diff --git 
a/geode-redis/src/integrationTest/java/org/apache/geode/redis/HashesIntegrationTest.java
 
b/geode-redis/src/integrationTest/java/org/apache/geode/redis/HashesIntegrationTest.java
index 73a2a53..71f407f 100755
--- 
a/geode-redis/src/integrationTest/java/org/apache/geode/redis/HashesIntegrationTest.java
+++ 
b/geode-redis/src/integrationTest/java/org/apache/geode/redis/HashesIntegrationTest.java
@@ -35,12 +35,7 @@ import java.util.Map.Entry;
 import java.util.Random;
 import java.util.Set;
 import java.util.concurrent.ArrayBlockingQueue;
-import java.util.concurrent.Callable;
-import java.util.concurrent.CyclicBarrier;
 import java.util.concurrent.ExecutionException;
-import java.util.concurrent.ExecutorService;
-import java.util.concurrent.Executors;
-import java.util.concurrent.Future;
 import java.util.concurrent.atomic.AtomicLong;
 
 import org.apache.commons.lang3.RandomStringUtils;
@@ -50,14 +45,12 @@ import org.junit.AfterClass;
 import org.junit.Assert;
 import org.junit.BeforeClass;
 import org.junit.ClassRule;
-import org.junit.Ignore;
 import org.junit.Test;
 import org.junit.experimental.categories.Category;
 import redis.clients.jedis.Jedis;
 import redis.clients.jedis.ScanResult;
 import redis.clients.jedis.exceptions.JedisDataException;
 
-import org.apache.geode.redis.internal.ByteArrayWrapper;
 import org.apache.geode.test.junit.categories.RedisTest;
 
 @Category({RedisTest.class})
@@ -163,61 +156,6 @@ public class HashesIntegrationTest {
     assertThat(jedis.exists("farm")).isFalse();
   }
 
-  @Ignore("GEODE-7905")
-  @Test
-  public void testConcurrentHDelConsistentlyUpdatesMetaInformation()
-      throws ExecutionException, InterruptedException {
-    ByteArrayWrapper keyAsByteArray = new ByteArrayWrapper("hash".getBytes());
-    AtomicLong errorCount = new AtomicLong();
-    CyclicBarrier startCyclicBarrier = new CyclicBarrier(2, () -> {
-      boolean keyIsRegistered = 
server.getKeyRegistrar().isRegistered(keyAsByteArray);
-      boolean containsKey = 
server.getRegionCache().getHashRegion().containsKey(keyAsByteArray);
-
-      if (keyIsRegistered != containsKey) {
-        errorCount.getAndIncrement();
-        jedis.hset("hash", "field", "value");
-        jedis.del("hash");
-      }
-    });
-
-    ExecutorService pool = Executors.newFixedThreadPool(2);
-
-    Callable<Long> callable1 = () -> {
-      Long removedCount = 0L;
-      for (int i = 0; i < 1000; i++) {
-        try {
-          Long result = jedis.hdel("hash", "field");
-          startCyclicBarrier.await();
-        } catch (Exception e) {
-          throw new RuntimeException(e);
-        }
-      }
-      return removedCount;
-    };
-
-    Callable<Long> callable2 = () -> {
-      Long addedCount = 0L;
-      for (int i = 0; i < 1000; i++) {
-        try {
-          addedCount += jedis2.hset("hash", "field", "value");
-          startCyclicBarrier.await();
-        } catch (Exception e) {
-          throw new RuntimeException(e);
-        }
-      }
-      return addedCount;
-    };
-
-    Future<Long> future1 = pool.submit(callable1);
-    Future<Long> future2 = pool.submit(callable2);
-
-    future1.get();
-    future2.get();
-
-    assertThat(errorCount.get())
-        .as("Inconsistency between keyRegistrar and backing store 
detected.").isEqualTo(0L);
-  }
-
   @Test
   public void testHkeys() {
     String key = randString();
diff --git 
a/geode-redis/src/integrationTest/java/org/apache/geode/redis/RedisServerIntegrationTest.java
 
b/geode-redis/src/integrationTest/java/org/apache/geode/redis/RedisServerIntegrationTest.java
index 29392da..c2e8909 100644
--- 
a/geode-redis/src/integrationTest/java/org/apache/geode/redis/RedisServerIntegrationTest.java
+++ 
b/geode-redis/src/integrationTest/java/org/apache/geode/redis/RedisServerIntegrationTest.java
@@ -59,11 +59,11 @@ public class RedisServerIntegrationTest {
   }
 
   @Test
-  public void initializeRedisCreatesFourRegions() {
-    redisServer = new GeodeRedisServer();
+  public void initializeRedisCreatesTwoRegions() {
+    redisServer = new GeodeRedisServer(redisPort);
     redisServer.start();
-    assertThat(cache.rootRegions()).hasSize(4);
-    
assertThat(cache.getRegion(GeodeRedisServer.REDIS_META_DATA_REGION)).isNotNull();
+    assertThat(cache.rootRegions()).hasSize(2);
+    
assertThat(cache.getRegion(GeodeRedisServer.REDIS_DATA_REGION)).isNotNull();
   }
 
   @Test
diff --git 
a/geode-redis/src/integrationTest/java/org/apache/geode/redis/StringsIntegrationTest.java
 
b/geode-redis/src/integrationTest/java/org/apache/geode/redis/StringsIntegrationTest.java
index ffa2093..8c4919d 100755
--- 
a/geode-redis/src/integrationTest/java/org/apache/geode/redis/StringsIntegrationTest.java
+++ 
b/geode-redis/src/integrationTest/java/org/apache/geode/redis/StringsIntegrationTest.java
@@ -15,7 +15,7 @@
 package org.apache.geode.redis;
 
 import static java.lang.Integer.parseInt;
-import static 
org.apache.geode.redis.internal.GeodeRedisServer.REDIS_META_DATA_REGION;
+import static 
org.apache.geode.redis.internal.GeodeRedisServer.REDIS_DATA_REGION;
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.assertj.core.api.Assertions.assertThatThrownBy;
 
@@ -583,7 +583,7 @@ public class StringsIntegrationTest {
   @Test
   public void 
testSet_protectedRedisDataType_throwsRedisDataTypeMismatchException() {
     assertThatThrownBy(
-        () -> jedis.set(REDIS_META_DATA_REGION, "something else"))
+        () -> jedis.set(REDIS_DATA_REGION, "something else"))
             .isInstanceOf(JedisDataException.class)
             .hasMessageContaining("protected");
   }
diff --git 
a/geode-redis/src/integrationTest/java/org/apache/geode/redis/sets/SRemIntegrationTest.java
 
b/geode-redis/src/integrationTest/java/org/apache/geode/redis/sets/SRemIntegrationTest.java
index 7e92818..ddf0649 100755
--- 
a/geode-redis/src/integrationTest/java/org/apache/geode/redis/sets/SRemIntegrationTest.java
+++ 
b/geode-redis/src/integrationTest/java/org/apache/geode/redis/sets/SRemIntegrationTest.java
@@ -187,7 +187,7 @@ public class SRemIntegrationTest {
     AtomicLong errorCount = new AtomicLong();
     CyclicBarrier startCyclicBarrier = new CyclicBarrier(2, () -> {
       boolean keyIsRegistered = 
server.getKeyRegistrar().isRegistered(keyAsByteArray);
-      boolean containsKey = 
server.getRegionCache().getSetRegion().containsKey(keyAsByteArray);
+      boolean containsKey = 
server.getRegionProvider().getDataRegion().containsKey(keyAsByteArray);
 
       if (keyIsRegistered != containsKey) {
         errorCount.getAndIncrement();
diff --git 
a/geode-redis/src/integrationTest/java/org/apache/geode/redis/sets/SetsIntegrationTest.java
 
b/geode-redis/src/integrationTest/java/org/apache/geode/redis/sets/SetsIntegrationTest.java
index e9108db..0758e87 100755
--- 
a/geode-redis/src/integrationTest/java/org/apache/geode/redis/sets/SetsIntegrationTest.java
+++ 
b/geode-redis/src/integrationTest/java/org/apache/geode/redis/sets/SetsIntegrationTest.java
@@ -37,7 +37,6 @@ import redis.clients.jedis.exceptions.JedisDataException;
 
 import org.apache.geode.management.internal.cli.util.ThreePhraseGenerator;
 import org.apache.geode.redis.GeodeRedisServerRule;
-import org.apache.geode.redis.internal.RedisConstants;
 import org.apache.geode.test.junit.categories.RedisTest;
 
 @Category({RedisTest.class})
@@ -92,7 +91,8 @@ public class SetsIntegrationTest {
     setValue[0] = "set value that should never get added";
 
     exceptionRule.expect(JedisDataException.class);
-    exceptionRule.expectMessage(RedisConstants.ERROR_WRONG_TYPE);
+    exceptionRule
+        .expectMessage("WRONGTYPE Operation against a key holding the wrong 
kind of value");
 
     jedis.set(key, stringValue);
     jedis.sadd(key, setValue);
diff --git 
a/geode-redis/src/integrationTest/resources/org/apache/geode/codeAnalysis/sanctionedDataSerializables.txt
 
b/geode-redis/src/integrationTest/resources/org/apache/geode/codeAnalysis/sanctionedDataSerializables.txt
index 25b02e4..24cbbd4 100644
--- 
a/geode-redis/src/integrationTest/resources/org/apache/geode/codeAnalysis/sanctionedDataSerializables.txt
+++ 
b/geode-redis/src/integrationTest/resources/org/apache/geode/codeAnalysis/sanctionedDataSerializables.txt
@@ -6,6 +6,10 @@ org/apache/geode/redis/internal/DoubleWrapper,2
 fromData,9
 toData,9
 
+org/apache/geode/redis/internal/KeyRegistrar$RedisDataTransformer,2
+fromData,14
+toData,9
+
 org/apache/geode/redis/internal/executor/hash/RedisHash,2
 fromData,9
 toData,9
diff --git 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/ExecutionHandlerContext.java
 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/ExecutionHandlerContext.java
index 93e8978..1998371 100644
--- 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/ExecutionHandlerContext.java
+++ 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/ExecutionHandlerContext.java
@@ -35,6 +35,7 @@ import org.apache.geode.cache.RegionDestroyedException;
 import org.apache.geode.cache.TransactionException;
 import org.apache.geode.cache.TransactionId;
 import org.apache.geode.cache.UnsupportedOperationInTransactionException;
+import org.apache.geode.cache.execute.FunctionException;
 import org.apache.geode.cache.query.QueryInvocationTargetException;
 import org.apache.geode.cache.query.RegionNotFoundException;
 import org.apache.geode.logging.internal.log4j.api.LogService;
@@ -55,7 +56,7 @@ public class ExecutionHandlerContext extends 
ChannelInboundHandlerAdapter {
   private static final Logger logger = LogService.getLogger();
   private static final int WAIT_REGION_DSTRYD_MILLIS = 100;
   private static final int MAXIMUM_NUM_RETRIES = (1000 * 60) / 
WAIT_REGION_DSTRYD_MILLIS; // 60
-                                                                               
           // seconds
+  // seconds
   private final RedisLockService lockService;
 
   private final Cache cache;
@@ -99,7 +100,8 @@ public class ExecutionHandlerContext extends 
ChannelInboundHandlerAdapter {
    * @param password Authentication password for each context, can be null
    */
   public ExecutionHandlerContext(Channel channel, Cache cache, RegionProvider 
regionProvider,
-      GeodeRedisServer server, byte[] password, KeyRegistrar keyRegistrar, 
PubSub pubSub,
+      GeodeRedisServer server, byte[] password,
+      KeyRegistrar keyRegistrar, PubSub pubSub,
       RedisLockService lockService) {
     this.keyRegistrar = keyRegistrar;
     this.lockService = lockService;
@@ -168,6 +170,19 @@ public class ExecutionHandlerContext extends 
ChannelInboundHandlerAdapter {
 
   private ByteBuf getExceptionResponse(ChannelHandlerContext ctx, Throwable 
cause) {
     ByteBuf response;
+    if (cause instanceof FunctionException) {
+      Throwable th = cause.getCause();
+      if (th == null) {
+        FunctionException functionException = (FunctionException) cause;
+        if (functionException.getExceptions() != null) {
+          th = functionException.getExceptions().get(0);
+        }
+      }
+      if (th != null) {
+        cause = th;
+      }
+    }
+
     if (cause instanceof RedisDataTypeMismatchException) {
       response = Coder.getWrongTypeResponse(this.byteBufAllocator, 
cause.getMessage());
     } else if (cause instanceof DecoderException
diff --git 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/GeodeRedisServer.java
 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/GeodeRedisServer.java
index ad1d385..05afba1 100644
--- 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/GeodeRedisServer.java
+++ 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/GeodeRedisServer.java
@@ -65,7 +65,6 @@ import org.apache.geode.annotations.VisibleForTesting;
 import org.apache.geode.annotations.internal.MakeNotStatic;
 import org.apache.geode.cache.Cache;
 import org.apache.geode.cache.CacheFactory;
-import org.apache.geode.cache.DataPolicy;
 import org.apache.geode.cache.EntryEvent;
 import org.apache.geode.cache.Region;
 import org.apache.geode.cache.RegionDestroyedException;
@@ -84,8 +83,6 @@ import 
org.apache.geode.internal.security.SecurableCommunicationChannel;
 import org.apache.geode.management.ManagementService;
 import org.apache.geode.management.internal.SystemManagementService;
 import org.apache.geode.redis.internal.executor.CommandFunction;
-import org.apache.geode.redis.internal.executor.hash.RedisHash;
-import org.apache.geode.redis.internal.executor.set.RedisSet;
 import org.apache.geode.redis.internal.serverinitializer.NamedThreadFactory;
 
 /**
@@ -97,7 +94,7 @@ import 
org.apache.geode.redis.internal.serverinitializer.NamedThreadFactory;
  * Each Redis data type instance is stored in a separate {@link Region} except 
for the Strings and
  * HyperLogLogs which are collectively stored in one Region respectively. That 
Region along with a
  * meta data region used internally are protected so the client may not store 
keys with the name
- * {@link GeodeRedisServer#REDIS_META_DATA_REGION} or {@link 
GeodeRedisServer#STRING_REGION}. The
+ * {@link GeodeRedisServer#REDIS_DATA_REGION} or {@link 
GeodeRedisServer#STRING_REGION}. The
  * default Region type is {@link RegionShortcut#PARTITION_REDUNDANT}. If the
  * {@link GeodeRedisServer#NUM_THREADS_SYS_PROP_NAME} system property is set
  * to 0, one thread per client will be created. Otherwise a worker thread pool 
of specified size is
@@ -118,7 +115,7 @@ import 
org.apache.geode.redis.internal.serverinitializer.NamedThreadFactory;
  * HMSET, HSETNX, HLEN, HSCAN, HSET, HVALS
  * <p>
  * Supported Set commands - SADD, SCARD, SDIFF, SDIFFSTORE, SINTER, 
SINTERSTORE, SISMEMBER,
- * SMEMBERS, SMOVE, SREM, SPOP, SRANDMEMBER, SCAN, SUNION, SUNIONSTORE
+ * SMEMBERS, SMOVE, SREM, SPOP, SRANDMEMBER, SSCAN, SUNION, SUNIONSTORE
  * <p>
  * Supported SortedSet commands - ZADD, ZCARD, ZCOUNT, ZINCRBY, ZLEXCOUNT, 
ZRANGE, ZRANGEBYLEX,
  * ZRANGEBYSCORE, ZRANK, ZREM, ZREMRANGEBYLEX, ZREMRANGEBYRANK, 
ZREMRANGEBYSCORE, ZREVRANGE,
@@ -220,7 +217,7 @@ public class GeodeRedisServer {
   @SuppressWarnings("deprecation")
   private org.apache.geode.LogWriter logger;
 
-  private RegionProvider regionCache;
+  private RegionProvider regionProvider;
 
   private final MetaCacheListener metaListener;
 
@@ -242,29 +239,17 @@ public class GeodeRedisServer {
   public static final String STRING_REGION = "ReDiS_StRiNgS";
 
   /**
-   * TThe field that defines the name of the {@link Region} which holds 
non-named hash. The current
-   * value of this field is {@value #HASH_REGION}.
-   */
-  public static final String HASH_REGION = "ReDiS_HASH";
-
-  /**
-   * TThe field that defines the name of the {@link Region} which holds sets. 
The current value of
-   * this field is {@value #SET_REGION}.
-   */
-  public static final String SET_REGION = "ReDiS_SET";
-
-
-  /**
    * The field that defines the name of the {@link Region} which holds all of 
the HyperLogLogs. The
    * current value of this field is {@code HLL_REGION}.
    */
   public static final String HLL_REGION = "ReDiS_HlL";
 
   /**
-   * The field that defines the name of the {@link Region} which holds all of 
the Redis meta data.
-   * The current value of this field is {@code REDIS_META_DATA_REGION}.
+   * The name of the region that holds data stored in redis.
+   * Currently this is the meta data but at some point the value for a 
particular
+   * type will be changed to an instance of {@link RedisData}
    */
-  public static final String REDIS_META_DATA_REGION = "ReDiS_MeTa_DaTa";
+  public static final String REDIS_DATA_REGION = "ReDiS_DaTa";
 
   /**
    * System property name that can be used to set the number of threads to be 
used by the
@@ -420,8 +405,8 @@ public class GeodeRedisServer {
   }
 
   @VisibleForTesting
-  public RegionProvider getRegionCache() {
-    return regionCache;
+  public RegionProvider getRegionProvider() {
+    return regionProvider;
   }
 
   private void initializeRedis() {
@@ -429,9 +414,7 @@ public class GeodeRedisServer {
       Region<ByteArrayWrapper, ByteArrayWrapper> stringsRegion;
 
       Region<ByteArrayWrapper, HyperLogLogPlus> hLLRegion;
-      Region<ByteArrayWrapper, RedisHash> redisHash;
-      Region<String, RedisDataType> redisMetaData;
-      Region<ByteArrayWrapper, RedisSet> redisSet;
+      Region<ByteArrayWrapper, RedisData> redisData;
       InternalCache gemFireCache = (InternalCache) cache;
 
       if ((stringsRegion = cache.getRegion(STRING_REGION)) == null) {
@@ -445,37 +428,25 @@ public class GeodeRedisServer {
         hLLRegion = regionFactory.create(HLL_REGION);
       }
 
-      if ((redisHash = cache.getRegion(HASH_REGION)) == null) {
-        RegionFactory<ByteArrayWrapper, RedisHash> regionFactory =
-            gemFireCache.createRegionFactory(DEFAULT_REGION_TYPE);
-        redisHash = regionFactory.create(HASH_REGION);
-      }
-
-      if ((redisSet = cache.getRegion(SET_REGION)) == null) {
-        RegionFactory<ByteArrayWrapper, RedisSet> regionFactory =
-            gemFireCache.createRegionFactory(DEFAULT_REGION_TYPE);
-        redisSet = regionFactory.create(SET_REGION);
-      }
-
-      if ((redisMetaData = cache.getRegion(REDIS_META_DATA_REGION)) == null) {
-        InternalRegionFactory<String, RedisDataType> redisMetaDataFactory =
-            gemFireCache.createInternalRegionFactory();
+      if ((redisData = cache.getRegion(REDIS_DATA_REGION)) == null) {
+        InternalRegionFactory<ByteArrayWrapper, RedisData> 
redisMetaDataFactory =
+            gemFireCache.createInternalRegionFactory(DEFAULT_REGION_TYPE);
         redisMetaDataFactory.addCacheListener(metaListener);
-        redisMetaDataFactory.setDataPolicy(DataPolicy.REPLICATE);
         
redisMetaDataFactory.setInternalRegion(true).setIsUsedForMetaRegion(true);
-        redisMetaData = redisMetaDataFactory.create(REDIS_META_DATA_REGION);
+        redisData = redisMetaDataFactory.create(REDIS_DATA_REGION);
       }
 
-      keyRegistrar = new KeyRegistrar(redisMetaData);
+      keyRegistrar = new KeyRegistrar(redisData);
       hashLockService = new RedisLockService();
       pubSub = new PubSubImpl(new Subscriptions());
-      regionCache = new RegionProvider(stringsRegion, hLLRegion, keyRegistrar,
-          expirationFutures, expirationExecutor, DEFAULT_REGION_TYPE, 
redisHash, redisSet);
-      redisMetaData.put(REDIS_META_DATA_REGION, RedisDataType.REDIS_PROTECTED);
-      redisMetaData.put(HLL_REGION, RedisDataType.REDIS_PROTECTED);
-      redisMetaData.put(STRING_REGION, RedisDataType.REDIS_PROTECTED);
-      redisMetaData.put(SET_REGION, RedisDataType.REDIS_PROTECTED);
-      redisMetaData.put(HASH_REGION, RedisDataType.REDIS_PROTECTED);
+      regionProvider = new RegionProvider(stringsRegion, hLLRegion, 
keyRegistrar,
+          expirationFutures, expirationExecutor, DEFAULT_REGION_TYPE, 
redisData);
+      keyRegistrar.register(Coder.stringToByteArrayWrapper(REDIS_DATA_REGION),
+          RedisDataType.REDIS_PROTECTED);
+      keyRegistrar.register(Coder.stringToByteArrayWrapper(HLL_REGION),
+          RedisDataType.REDIS_PROTECTED);
+      keyRegistrar.register(Coder.stringToByteArrayWrapper(STRING_REGION),
+          RedisDataType.REDIS_PROTECTED);
 
       CommandFunction.register();
     }
@@ -484,6 +455,8 @@ public class GeodeRedisServer {
     registerLockServiceMBean();
   }
 
+  public static final int PROTECTED_KEY_COUNT = 3;
+
   @VisibleForTesting
   public RedisLockService getLockService() {
     return hashLockService;
@@ -509,20 +482,28 @@ public class GeodeRedisServer {
   }
 
   private void checkForRegions() {
-    Collection<Entry<String, RedisDataType>> entrySet = 
keyRegistrar.keyInfos();
-    for (Entry<String, RedisDataType> entry : entrySet) {
-      String regionName = entry.getKey();
-      RedisDataType type = entry.getValue();
-      Region<?, ?> newRegion = cache.getRegion(regionName);
-      if (newRegion == null && type != RedisDataType.REDIS_STRING && type != 
RedisDataType.REDIS_HLL
-          && type != RedisDataType.REDIS_PROTECTED) {
-        try {
-          regionCache
-              
.createRemoteRegionReferenceLocally(Coder.stringToByteArrayWrapper(regionName), 
type);
-        } catch (Exception e) {
-          if (logger.errorEnabled()) {
-            logger.error(e);
-          }
+    Collection<Entry<ByteArrayWrapper, RedisData>> entrySet = 
keyRegistrar.keyInfos();
+    for (Entry<ByteArrayWrapper, RedisData> entry : entrySet) {
+      ByteArrayWrapper key = entry.getKey();
+      RedisDataType type = entry.getValue().getType();
+      if (!regionProvider.typeUsesDynamicRegions(type)) {
+        continue;
+      }
+      if (cache.getRegion(key.toString()) != null) {
+        // TODO: this seems to be correct (i.e. no need to call 
createRemoteRegionReferenceLocally
+        // if region already exists).
+        // HOWEVER: createRemoteRegionReferenceLocally ends up doing nothing 
if the region does not
+        // exist. So this caller of createRemoteRegionReferenceLocally 
basically does nothing.
+        // createRemoteRegionReferenceLocally might be needed even if the 
region exists because
+        // local state needs to be initialized (like indexes and queries).
+        continue;
+      }
+      try {
+        regionProvider.createRemoteRegionReferenceLocally(key, type);
+      } catch (Exception e) {
+        // TODO: this eats the exception so if something really is wrong we 
don't fail but just log.
+        if (logger.errorEnabled()) {
+          logger.error(e);
         }
       }
     }
@@ -614,7 +595,7 @@ public class GeodeRedisServer {
         pipeline.addLast(ByteToCommandDecoder.class.getSimpleName(), new 
ByteToCommandDecoder());
         pipeline.addLast(new WriteTimeoutHandler(10));
         pipeline.addLast(ExecutionHandlerContext.class.getSimpleName(),
-            new ExecutionHandlerContext(socketChannel, cache, regionCache, 
GeodeRedisServer.this,
+            new ExecutionHandlerContext(socketChannel, cache, regionProvider, 
GeodeRedisServer.this,
                 redisPasswordBytes,
                 keyRegistrar, pubSub, hashLockService));
       }
@@ -659,17 +640,13 @@ public class GeodeRedisServer {
    *
    * @param event EntryEvent from meta data region
    */
-  private void afterKeyCreate(EntryEvent<String, RedisDataType> event) {
+  private void afterKeyCreate(EntryEvent<ByteArrayWrapper, RedisData> event) {
     if (event.isOriginRemote()) {
-      final String key = event.getKey();
-      final RedisDataType value = event.getNewValue();
-      if (value != RedisDataType.REDIS_STRING && value != 
RedisDataType.REDIS_HLL
-          && value != RedisDataType.REDIS_PROTECTED) {
-        try {
-          
regionCache.createRemoteRegionReferenceLocally(Coder.stringToByteArrayWrapper(key),
-              value);
-        } catch (RegionDestroyedException ignore) { // Region already 
destroyed, ignore
-        }
+      final ByteArrayWrapper key = event.getKey();
+      final RedisData value = event.getNewValue();
+      try {
+        regionProvider.createRemoteRegionReferenceLocally(key, 
value.getType());
+      } catch (RegionDestroyedException ignore) { // Region already destroyed, 
ignore
       }
     }
   }
@@ -678,29 +655,22 @@ public class GeodeRedisServer {
    * When a key is removed then this function will make sure the associated 
queries with the key are
    * also removed from each vm to avoid unnecessary data retention
    */
-  private void afterKeyDestroy(EntryEvent<String, RedisDataType> event) {
+  private void afterKeyDestroy(EntryEvent<ByteArrayWrapper, RedisData> event) {
     if (event.isOriginRemote()) {
-      final String key = event.getKey();
-      final RedisDataType value = event.getOldValue();
-      if (value != null && value != RedisDataType.REDIS_STRING && value != 
RedisDataType.REDIS_HLL
-          && value != RedisDataType.REDIS_PROTECTED) {
-        ByteArrayWrapper kW = Coder.stringToByteArrayWrapper(key);
-        Region<?, ?> r = regionCache.getRegion(kW);
-        if (r != null) {
-          regionCache.removeRegionReferenceLocally(kW, value);
-        }
-      }
+      final ByteArrayWrapper key = event.getKey();
+      final RedisData value = event.getOldValue();
+      regionProvider.removeRegionReferenceLocally(key, value.getType());
     }
   }
 
-  private class MetaCacheListener extends CacheListenerAdapter<String, 
RedisDataType> {
+  private class MetaCacheListener extends 
CacheListenerAdapter<ByteArrayWrapper, RedisData> {
     @Override
-    public void afterCreate(EntryEvent<String, RedisDataType> event) {
+    public void afterCreate(EntryEvent<ByteArrayWrapper, RedisData> event) {
       afterKeyCreate(event);
     }
 
     @Override
-    public void afterDestroy(EntryEvent<String, RedisDataType> event) {
+    public void afterDestroy(EntryEvent<ByteArrayWrapper, RedisData> event) {
       afterKeyDestroy(event);
     }
   }
@@ -730,7 +700,7 @@ public class GeodeRedisServer {
       serverChannel.close();
       c.syncUninterruptibly();
       c2.syncUninterruptibly();
-      regionCache.close();
+      regionProvider.close();
       if (mainThread != null) {
         mainThread.interrupt();
       }
diff --git 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/KeyRegistrar.java 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/KeyRegistrar.java
index 291193d..a73d56e 100644
--- 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/KeyRegistrar.java
+++ 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/KeyRegistrar.java
@@ -14,16 +14,21 @@
  */
 package org.apache.geode.redis.internal;
 
+import java.io.DataInput;
+import java.io.DataOutput;
+import java.io.IOException;
 import java.util.Map;
 import java.util.Set;
 
+import org.apache.geode.DataSerializer;
+import org.apache.geode.InvalidDeltaException;
 import org.apache.geode.cache.Region;
 
 public class KeyRegistrar {
-  private Region<String, RedisDataType> redisMetaRegion;
+  private Region<ByteArrayWrapper, RedisData> redisDataRegion;
 
-  public KeyRegistrar(Region<String, RedisDataType> redisMetaRegion) {
-    this.redisMetaRegion = redisMetaRegion;
+  public KeyRegistrar(Region<ByteArrayWrapper, RedisData> redisDataRegion) {
+    this.redisDataRegion = redisDataRegion;
   }
 
   /**
@@ -31,39 +36,119 @@ public class KeyRegistrar {
    * store the key:datatype association in the metadataRegion
    */
   public void register(ByteArrayWrapper key, RedisDataType type) {
-    RedisDataType existingType = 
this.redisMetaRegion.putIfAbsent(key.toString(), type);
-    if (!isValidDataType(existingType, type)) {
-      throwDataTypeException(key, existingType);
+    RedisData existingValue = this.redisDataRegion.putIfAbsent(key, 
transformType(type));
+    if (!isValidDataType(existingValue, type)) {
+      throwDataTypeException(key, existingValue);
     }
   }
 
-  public boolean unregister(ByteArrayWrapper key) {
-    return this.redisMetaRegion.remove(key.toString()) != null;
+  /**
+   * TODO: This class should go away once all data types implement RedisData.
+   */
+  private static class RedisDataTransformer implements RedisData {
+    private RedisDataType type;
+
+    public RedisDataTransformer(RedisDataType type) {
+      this.type = type;
+    }
+
+    public RedisDataTransformer() {
+      // needed for serialization
+    }
+
+    @Override
+    public RedisDataType getType() {
+      return type;
+    }
+
+    @Override
+    public void toData(DataOutput out) throws IOException {
+      DataSerializer.writeEnum(type, out);
+    }
+
+    @Override
+    public void fromData(DataInput in) throws IOException, 
ClassNotFoundException {
+      type = DataSerializer.readEnum(RedisDataType.class, in);
+    }
+
+    @Override
+    public boolean hasDelta() {
+      return false;
+    }
+
+    @Override
+    public void toDelta(DataOutput out) throws IOException {}
+
+    @Override
+    public void fromDelta(DataInput in) throws IOException, 
InvalidDeltaException {}
+  }
+
+  private static final RedisDataTransformer REDIS_SORTEDSET_DATA =
+      new RedisDataTransformer(RedisDataType.REDIS_SORTEDSET);
+  private static final RedisDataTransformer REDIS_LIST_DATA =
+      new RedisDataTransformer(RedisDataType.REDIS_LIST);
+  private static final RedisDataTransformer REDIS_STRING_DATA =
+      new RedisDataTransformer(RedisDataType.REDIS_STRING);
+  private static final RedisDataTransformer REDIS_PROTECTED_DATA =
+      new RedisDataTransformer(RedisDataType.REDIS_PROTECTED);
+  private static final RedisDataTransformer REDIS_HLL_DATA =
+      new RedisDataTransformer(RedisDataType.REDIS_HLL);
+  private static final RedisDataTransformer REDIS_PUBSUB_DATA =
+      new RedisDataTransformer(RedisDataType.REDIS_PUBSUB);
+
+  /**
+   * TODO: This method should only exist while we still have data types that 
have not implemented
+   * this RedisData interface. Once they all implement it then we can get rid 
of this.
+   */
+  private RedisData transformType(RedisDataType type) {
+    switch (type) {
+      case REDIS_SORTEDSET:
+        return REDIS_SORTEDSET_DATA;
+      case REDIS_LIST:
+        return REDIS_LIST_DATA;
+      case REDIS_STRING:
+        return REDIS_STRING_DATA;
+      case REDIS_PROTECTED:
+        return REDIS_PROTECTED_DATA;
+      case REDIS_HLL:
+        return REDIS_HLL_DATA;
+      case REDIS_PUBSUB:
+        return REDIS_PUBSUB_DATA;
+      case REDIS_HASH:
+      case REDIS_SET:
+        throw new IllegalStateException(
+            type + " should never be added as a type to the data region");
+      default:
+        throw new IllegalStateException("unexpected RedisDataType: " + type);
+    }
   }
 
-  public boolean unregisterIfType(ByteArrayWrapper key, RedisDataType 
expectedType) {
-    return redisMetaRegion.remove(key.toString(), expectedType);
+  public boolean unregister(ByteArrayWrapper key) {
+    return this.redisDataRegion.remove(key) != null;
   }
 
   public boolean isRegistered(ByteArrayWrapper key) {
-    return this.redisMetaRegion.containsKey(key.toString());
+    return this.redisDataRegion.containsKey(key);
   }
 
-  public Set<String> keys() {
-    Set<String> keysWithProtected = this.redisMetaRegion.keySet();
-    return keysWithProtected;
+  public Set<ByteArrayWrapper> keys() {
+    return this.redisDataRegion.keySet();
   }
 
-  public Set<Map.Entry<String, RedisDataType>> keyInfos() {
-    return this.redisMetaRegion.entrySet();
+  public Set<Map.Entry<ByteArrayWrapper, RedisData>> keyInfos() {
+    return this.redisDataRegion.entrySet();
   }
 
   public int numKeys() {
-    return this.redisMetaRegion.size() - RedisConstants.NUM_DEFAULT_KEYS;
+    return this.redisDataRegion.size() - GeodeRedisServer.PROTECTED_KEY_COUNT;
   }
 
   public RedisDataType getType(ByteArrayWrapper key) {
-    return this.redisMetaRegion.get(key.toString());
+    RedisData currentValue = redisDataRegion.get(key);
+    if (currentValue == null) {
+      return null;
+    }
+    return currentValue.getType();
   }
 
   /**
@@ -74,9 +159,12 @@ public class KeyRegistrar {
    * @param type Type to check to
    */
   public void validate(ByteArrayWrapper key, RedisDataType type) {
-    RedisDataType currentType = redisMetaRegion.get(key.toString());
-    if (!isValidDataType(currentType, type)) {
-      throwDataTypeException(key, currentType);
+    RedisData currentValue = redisDataRegion.get(key);
+    if (currentValue != null) {
+      RedisDataType currentType = currentValue.getType();
+      if (!isValidDataType(currentType, type)) {
+        throwDataTypeException(key, currentType);
+      }
     }
   }
 
@@ -86,7 +174,18 @@ public class KeyRegistrar {
    * @param key Key to check
    */
   public boolean isProtected(ByteArrayWrapper key) {
-    return 
RedisDataType.REDIS_PROTECTED.equals(redisMetaRegion.get(key.toString()));
+    RedisData redisData = redisDataRegion.get(key);
+    if (redisData == null) {
+      return false;
+    }
+    return RedisDataType.REDIS_PROTECTED.equals(redisData.getType());
+  }
+
+  private boolean isValidDataType(RedisData actualData, RedisDataType 
expectedDataType) {
+    if (actualData == null) {
+      return true;
+    }
+    return isValidDataType(actualData.getType(), expectedDataType);
   }
 
   private boolean isValidDataType(RedisDataType actualDataType, RedisDataType 
expectedDataType) {
@@ -97,6 +196,10 @@ public class KeyRegistrar {
     return dataType == null;
   }
 
+  private void throwDataTypeException(ByteArrayWrapper key, RedisData data) {
+    throwDataTypeException(key, data.getType());
+  }
+
   private void throwDataTypeException(ByteArrayWrapper key, RedisDataType 
dataType) {
     if (RedisDataType.REDIS_PROTECTED.equals(dataType)) {
       throw new RedisDataTypeMismatchException("The key name \"" + key + "\" 
is protected");
diff --git 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/RedisConstants.java 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/RedisConstants.java
index 0abd406..9f0365c 100644
--- 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/RedisConstants.java
+++ 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/RedisConstants.java
@@ -17,8 +17,6 @@ package org.apache.geode.redis.internal;
 
 public class RedisConstants {
 
-  public static final int NUM_DEFAULT_KEYS = 3;
-
   /*
    * Responses
    */
diff --git 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/RedisData.java 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/RedisData.java
new file mode 100644
index 0000000..a8634c2
--- /dev/null
+++ b/geode-redis/src/main/java/org/apache/geode/redis/internal/RedisData.java
@@ -0,0 +1,24 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more 
contributor license
+ * agreements. See the NOTICE file distributed with this work for additional 
information regarding
+ * copyright ownership. The ASF licenses this file to You under the Apache 
License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the 
License. You may obtain a
+ * copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software 
distributed under the License
+ * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 
KIND, either express
+ * or implied. See the License for the specific language governing permissions 
and limitations under
+ * the License.
+ *
+ */
+
+package org.apache.geode.redis.internal;
+
+import org.apache.geode.DataSerializable;
+import org.apache.geode.Delta;
+
+public interface RedisData extends Delta, DataSerializable {
+  RedisDataType getType();
+}
diff --git 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/RegionProvider.java 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/RegionProvider.java
index 59716ed..98ff1ea 100644
--- 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/RegionProvider.java
+++ 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/RegionProvider.java
@@ -47,10 +47,8 @@ import 
org.apache.geode.management.internal.cli.result.model.ResultModel;
 import org.apache.geode.redis.internal.executor.ExpirationExecutor;
 import org.apache.geode.redis.internal.executor.ListQuery;
 import org.apache.geode.redis.internal.executor.SortedSetQuery;
-import org.apache.geode.redis.internal.executor.hash.RedisHash;
 import org.apache.geode.redis.internal.executor.hash.RedisHashCommands;
 import 
org.apache.geode.redis.internal.executor.hash.RedisHashCommandsFunctionExecutor;
-import org.apache.geode.redis.internal.executor.set.RedisSet;
 import org.apache.geode.redis.internal.executor.set.RedisSetCommands;
 import 
org.apache.geode.redis.internal.executor.set.RedisSetCommandsFunctionExecutor;
 
@@ -61,7 +59,7 @@ import 
org.apache.geode.redis.internal.executor.set.RedisSetCommandsFunctionExec
  * synchronized, which is done away with and abstracted by this class.
  */
 public class RegionProvider implements Closeable {
-  private final ConcurrentHashMap<ByteArrayWrapper, Region<Object, Object>> 
regions;
+  private final ConcurrentHashMap<ByteArrayWrapper, Region<Object, Object>> 
dynamicRegions;
 
   /**
    * This is the Redis meta data {@link Region} that holds the {@link 
RedisDataType} information for
@@ -82,8 +80,7 @@ public class RegionProvider implements Closeable {
    */
   private final Region<ByteArrayWrapper, HyperLogLogPlus> hLLRegion;
 
-  private final Region<ByteArrayWrapper, RedisHash> hashRegion;
-  private final Region<ByteArrayWrapper, RedisSet> setRegion;
+  private final Region<ByteArrayWrapper, RedisData> dataRegion;
 
   private final Cache cache;
   private final QueryService queryService;
@@ -94,7 +91,7 @@ public class RegionProvider implements Closeable {
   private final RegionShortcut defaultRegionType;
   @Immutable
   private static final CreateRegionCommand createRegionCmd = new 
CreateRegionCommand();
-  private final ConcurrentHashMap<String, Lock> locks;
+  private final ConcurrentHashMap<ByteArrayWrapper, Lock> dynamicRegionLocks;
 
   @SuppressWarnings("deprecation")
   public RegionProvider(Region<ByteArrayWrapper, ByteArrayWrapper> 
stringsRegion,
@@ -102,11 +99,10 @@ public class RegionProvider implements Closeable {
       KeyRegistrar redisMetaRegion,
       ConcurrentMap<ByteArrayWrapper, ScheduledFuture<?>> expirationsMap,
       ScheduledExecutorService expirationExecutor, RegionShortcut 
defaultShortcut,
-      Region<ByteArrayWrapper, RedisHash> hashRegion,
-      Region<ByteArrayWrapper, RedisSet> setRegion) {
+      Region<ByteArrayWrapper, RedisData> dataRegion) {
 
     this(stringsRegion, hLLRegion, redisMetaRegion, expirationsMap, 
expirationExecutor,
-        defaultShortcut, hashRegion, setRegion, 
GemFireCacheImpl.getInstance());
+        defaultShortcut, dataRegion, GemFireCacheImpl.getInstance());
   }
 
   public RegionProvider(Region<ByteArrayWrapper, ByteArrayWrapper> 
stringsRegion,
@@ -114,14 +110,12 @@ public class RegionProvider implements Closeable {
       KeyRegistrar redisMetaRegion,
       ConcurrentMap<ByteArrayWrapper, ScheduledFuture<?>> expirationsMap,
       ScheduledExecutorService expirationExecutor, RegionShortcut 
defaultShortcut,
-      Region<ByteArrayWrapper, RedisHash> hashRegion,
-      Region<ByteArrayWrapper, RedisSet> setRegion, Cache cache) {
+      Region<ByteArrayWrapper, RedisData> dataRegion, Cache cache) {
     if (stringsRegion == null || hLLRegion == null || redisMetaRegion == null) 
{
       throw new NullPointerException();
     }
-    this.hashRegion = hashRegion;
-    this.setRegion = setRegion;
-    regions = new ConcurrentHashMap<>();
+    this.dataRegion = dataRegion;
+    dynamicRegions = new ConcurrentHashMap<>();
     this.stringsRegion = stringsRegion;
     this.hLLRegion = hLLRegion;
     keyRegistrar = redisMetaRegion;
@@ -130,7 +124,7 @@ public class RegionProvider implements Closeable {
     this.expirationsMap = expirationsMap;
     this.expirationExecutor = expirationExecutor;
     defaultRegionType = defaultShortcut;
-    locks = new ConcurrentHashMap<>();
+    dynamicRegionLocks = new ConcurrentHashMap<>();
   }
 
   public Region<?, ?> getRegion(ByteArrayWrapper key) {
@@ -138,7 +132,7 @@ public class RegionProvider implements Closeable {
       return null;
     }
 
-    return regions.get(key);
+    return dynamicRegions.get(key);
 
   }
 
@@ -152,11 +146,8 @@ public class RegionProvider implements Closeable {
         return stringsRegion;
 
       case REDIS_HASH:
-        return hashRegion;
-
       case REDIS_SET:
-      case REDIS_SORTEDSET:
-        return setRegion;
+        return dataRegion;
 
       case REDIS_HLL:
         return hLLRegion;
@@ -165,28 +156,34 @@ public class RegionProvider implements Closeable {
       case REDIS_PUBSUB:
       case NONE:
       case REDIS_LIST:
+      case REDIS_SORTEDSET:
       default:
         return null;
     }
   }
 
   public void removeRegionReferenceLocally(ByteArrayWrapper key, RedisDataType 
type) {
-    Lock lock = locks.get(key.toString());
-    boolean locked = false;
-    try {
-      if (lock != null) {
-        locked = lock.tryLock();
-      }
+    if (!typeUsesDynamicRegions(type)) {
+      return;
+    }
+    if (getRegion(key) == null) {
+      return;
+    }
+    Lock lock = dynamicRegionLocks.get(key);
+    if (lock == null) {
+      return;
+    }
+    boolean locked = lock.tryLock();
+    if (!locked) {
       // If we cannot get the lock we ignore this remote event, this key has 
local event
       // that started independently, ignore this event to prevent deadlock
-      if (locked) {
-        cancelKeyExpiration(key);
-        removeRegionState(key, type);
-      }
+      return;
+    }
+    try {
+      cancelKeyExpiration(key);
+      removeRegionState(key, type);
     } finally {
-      if (locked) {
-        lock.unlock();
-      }
+      lock.unlock();
     }
   }
 
@@ -199,16 +196,28 @@ public class RegionProvider implements Closeable {
     return removeKey(key, type, true);
   }
 
+  private boolean typeStoresDataInKeyRegistrar(RedisDataType type) {
+    if (type == RedisDataType.REDIS_SET) {
+      return true;
+    }
+    if (type == RedisDataType.REDIS_HASH) {
+      return true;
+    }
+    return false;
+  }
+
   public boolean removeKey(ByteArrayWrapper key, RedisDataType type, boolean 
cancelExpiration) {
     if (type == RedisDataType.REDIS_PROTECTED) {
       return false;
     }
-    Lock lock = locks.get(key.toString());
+    Lock lock = dynamicRegionLocks.get(key);
     try {
-      if (lock != null) {// Strings/hlls will not have locks
+      if (lock != null) { // only typeUsesDynamicRegions will have a lock
         lock.lock();
       }
-      keyRegistrar.unregister(key);
+      if (!typeStoresDataInKeyRegistrar(type)) {
+        keyRegistrar.unregister(key);
+      }
       try {
         if (type == RedisDataType.REDIS_STRING) {
           return stringsRegion.remove(key) != null;
@@ -218,11 +227,11 @@ public class RegionProvider implements Closeable {
           return destroyRegion(key, type);
         } else if (type == RedisDataType.REDIS_SET) {
           RedisSetCommands redisSetCommands =
-              new RedisSetCommandsFunctionExecutor(setRegion);
+              new RedisSetCommandsFunctionExecutor(dataRegion);
           return redisSetCommands.del(key);
         } else if (type == RedisDataType.REDIS_HASH) {
           RedisHashCommands redisHashCommands =
-              new RedisHashCommandsFunctionExecutor(hashRegion);
+              new RedisHashCommandsFunctionExecutor(dataRegion);
           return redisHashCommands.del(key);
         } else {
           return false;
@@ -236,7 +245,7 @@ public class RegionProvider implements Closeable {
           removeKeyExpiration(key);
         }
         if (lock != null) {
-          locks.remove(key.toString());
+          dynamicRegionLocks.remove(key);
         }
       }
     } finally {
@@ -251,50 +260,54 @@ public class RegionProvider implements Closeable {
     return getOrCreateRegion0(key, type, context, true);
   }
 
+  public boolean typeUsesDynamicRegions(RedisDataType type) {
+    return type == RedisDataType.REDIS_LIST || type == 
RedisDataType.REDIS_SORTEDSET;
+  }
+
   public void createRemoteRegionReferenceLocally(ByteArrayWrapper key, 
RedisDataType type) {
-    if (type == null || type == RedisDataType.REDIS_STRING || type == 
RedisDataType.REDIS_HLL) {
+    if (!typeUsesDynamicRegions(type)) {
       return;
     }
-    Region<Object, Object> r = regions.get(key);
+    Region<Object, Object> r = dynamicRegions.get(key);
     if (r != null) {
       return;
     }
-    if (!regions.containsKey(key)) {
-      String stringKey = key.toString();
-      Lock lock = locks.get(stringKey);
+    Lock lock = dynamicRegionLocks.get(key);
+    if (lock == null) {
+      Lock newLock = new ReentrantLock();
+      lock = dynamicRegionLocks.putIfAbsent(key, newLock);
       if (lock == null) {
-        locks.putIfAbsent(stringKey, new ReentrantLock());
-        lock = locks.get(stringKey);
+        lock = newLock;
       }
-      boolean locked = false;
+    }
+    boolean locked = lock.tryLock();
+    // If we cannot get the lock then this remote event may have been 
initialized
+    // independently on this machine, so if we wait on the lock it is more than
+    // likely we will deadlock just to do the same task. This event can be 
ignored
+    if (locked) {
       try {
-        locked = lock.tryLock();
-        // If we cannot get the lock then this remote event may have been 
initialized
-        // independently on this machine, so if we wait on the lock it is more 
than
-        // likely we will deadlock just to do the same task. This event can be 
ignored
-        if (locked) {
-          r = cache.getRegion(key.toString());
-          // If r is null, this implies that we are after a create/destroy
-          // simply ignore. Calls to getRegion or getOrCreate will work 
correctly
-          if (r == null) {
-            return;
-          }
+        r = cache.getRegion(key.toString());
+        // If r is null, this implies that we are after a create/destroy
+        // simply ignore. Calls to getRegion or getOrCreate will work correctly
+        if (r == null) {
+          // TODO: one caller of this method only calls it if getRegion 
returned null. It was
+          // expecting us to create it locally. If someone else will create it 
locally then this
+          // method does not need to be called.
+          return;
+        }
 
-          if (type == RedisDataType.REDIS_LIST) {
-            doInitializeList(key, r);
-          } else if (type == RedisDataType.REDIS_SORTEDSET) {
-            try {
-              doInitializeSortedSet(key, r);
-            } catch (RegionNotFoundException | IndexInvalidException e) {
-              // ignore
-            }
+        if (type == RedisDataType.REDIS_LIST) {
+          doInitializeList(key, r);
+        } else if (type == RedisDataType.REDIS_SORTEDSET) {
+          try {
+            doInitializeSortedSet(key, r);
+          } catch (RegionNotFoundException | IndexInvalidException e) {
+            // ignore
           }
-          regions.put(key, r);
         }
+        dynamicRegions.put(key, r);
       } finally {
-        if (locked) {
-          lock.unlock();
-        }
+        lock.unlock();
       }
     }
   }
@@ -302,24 +315,25 @@ public class RegionProvider implements Closeable {
   private Region<?, ?> getOrCreateRegion0(ByteArrayWrapper key, RedisDataType 
type,
       ExecutionHandlerContext context, boolean addToMeta) {
 
-    String regionName = key.toString();
     keyRegistrar.validate(key, type);
-    Region<Object, Object> r = regions.get(key);
+    Region<Object, Object> r = dynamicRegions.get(key);
     if (r != null && r.isDestroyed()) {
       removeKey(key, type);
       r = null;
     }
     if (r == null) {
-      String stringKey = key.toString();
-      Lock lock = locks.get(stringKey);
+      Lock lock = dynamicRegionLocks.get(key);
       if (lock == null) {
-        locks.putIfAbsent(stringKey, new ReentrantLock());
-        lock = locks.get(stringKey);
+        Lock newLock = new ReentrantLock();
+        lock = dynamicRegionLocks.putIfAbsent(key, newLock);
+        if (lock == null) {
+          lock = newLock;
+        }
       }
 
+      lock.lock();
       try {
-        lock.lock();
-        r = regions.get(key);
+        r = dynamicRegions.get(key);
         if (r == null) {
           boolean hasTransaction = context != null && 
context.hasTransaction(); // Can create
           // without context
@@ -334,7 +348,7 @@ public class RegionProvider implements Closeable {
             do {
               concurrentCreateDestroyException = null;
 
-              r = createRegionGlobally(regionName);
+              r = createRegionGlobally(key.toString());
 
               try {
                 if (type == RedisDataType.REDIS_LIST) {
@@ -352,7 +366,7 @@ public class RegionProvider implements Closeable {
                 }
               }
             } while (concurrentCreateDestroyException != null);
-            regions.put(key, r);
+            dynamicRegions.put(key, r);
             if (addToMeta) {
               keyRegistrar.register(key, type);
             }
@@ -370,14 +384,14 @@ public class RegionProvider implements Closeable {
   }
 
   /**
-   * SYNCHRONIZE EXTERNALLY OF this.locks.get(key.toString())!!!!!
+   * SYNCHRONIZE EXTERNALLY OF this.locks.get(key)!!!!!
    *
    * @param key Key of region to destroy
    * @param type Type of region to destroyu
    * @return Flag if destroyed
    */
   private boolean destroyRegion(ByteArrayWrapper key, RedisDataType type) {
-    Region<?, ?> r = regions.get(key);
+    Region<?, ?> r = dynamicRegions.get(key);
     if (r != null) {
       try {
         r.destroyRegion();
@@ -398,7 +412,7 @@ public class RegionProvider implements Closeable {
    */
   private void removeRegionState(ByteArrayWrapper key, RedisDataType type) {
     preparedQueries.remove(key);
-    regions.remove(key);
+    dynamicRegions.remove(key);
   }
 
   private void doInitializeSortedSet(ByteArrayWrapper key, Region<?, ?> r)
@@ -472,25 +486,15 @@ public class RegionProvider implements Closeable {
   }
 
   public boolean regionExists(ByteArrayWrapper key) {
-    return regions.containsKey(key);
+    return dynamicRegions.containsKey(key);
   }
 
   public Region<ByteArrayWrapper, ByteArrayWrapper> getStringsRegion() {
     return stringsRegion;
   }
 
-  /**
-   * @return the hashRegion
-   */
-  public Region<ByteArrayWrapper, RedisHash> getHashRegion() {
-    return hashRegion;
-  }
-
-  /**
-   * @return the setRegion
-   */
-  public Region<ByteArrayWrapper, RedisSet> getSetRegion() {
-    return setRegion;
+  public Region<ByteArrayWrapper, RedisData> getDataRegion() {
+    return dataRegion;
   }
 
   public Region<ByteArrayWrapper, HyperLogLogPlus> gethLLRegion() {
@@ -592,7 +596,7 @@ public class RegionProvider implements Closeable {
 
   public String dumpRegionsCache() {
     StringBuilder builder = new StringBuilder();
-    for (Entry<ByteArrayWrapper, Region<Object, Object>> e : 
regions.entrySet()) {
+    for (Entry<ByteArrayWrapper, Region<Object, Object>> e : 
dynamicRegions.entrySet()) {
       builder.append(e.getKey()).append(" --> 
{").append(e.getValue()).append("}\n");
     }
     return builder.toString();
diff --git 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/CommandFunction.java
 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/CommandFunction.java
index 90ff601..6d37582 100644
--- 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/CommandFunction.java
+++ 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/CommandFunction.java
@@ -20,13 +20,13 @@ import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
 import java.util.concurrent.Callable;
-import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.regex.Pattern;
 
 import org.apache.geode.cache.Region;
 import org.apache.geode.cache.execute.FunctionService;
 import org.apache.geode.redis.internal.ByteArrayWrapper;
 import org.apache.geode.redis.internal.RedisCommandType;
+import org.apache.geode.redis.internal.RedisData;
 import org.apache.geode.redis.internal.RedisDataType;
 import org.apache.geode.redis.internal.executor.set.RedisSetInRegion;
 import org.apache.geode.redis.internal.executor.set.SingleResultCollector;
@@ -45,10 +45,9 @@ public class CommandFunction extends 
SingleResultRedisFunction {
     FunctionService.registerFunction(new CommandFunction(stripedExecutor));
   }
 
-  @SuppressWarnings("unchecked")
   public static <T> T execute(RedisCommandType command,
       ByteArrayWrapper key,
-      Object commandArguments, Region region) {
+      Object commandArguments, Region<ByteArrayWrapper, RedisData> region) {
     SingleResultCollector<T> rc = new SingleResultCollector<>();
     FunctionService
         .onRegion(region)
@@ -82,11 +81,7 @@ public class CommandFunction extends 
SingleResultRedisFunction {
       }
       case SREM: {
         ArrayList<ByteArrayWrapper> membersToRemove = 
(ArrayList<ByteArrayWrapper>) args[1];
-        callable = () -> {
-          AtomicBoolean setWasDeleted = new AtomicBoolean();
-          long srem = new RedisSetInRegion(localRegion).srem(key, 
membersToRemove, setWasDeleted);
-          return new Object[] {srem, setWasDeleted.get()};
-        };
+        callable = () -> new RedisSetInRegion(localRegion).srem(key, 
membersToRemove);
         break;
       }
       case DEL:
@@ -145,7 +140,6 @@ public class CommandFunction extends 
SingleResultRedisFunction {
   }
 
 
-  @SuppressWarnings("unchecked")
   private Callable<Object> executeDel(ByteArrayWrapper key, Region localRegion,
       RedisDataType delType) {
     switch (delType) {
diff --git 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/EmptyRedisHash.java
 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/EmptyRedisHash.java
index acf4e5f..79b9205 100644
--- 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/EmptyRedisHash.java
+++ 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/EmptyRedisHash.java
@@ -22,17 +22,18 @@ import java.util.List;
 
 import org.apache.geode.cache.Region;
 import org.apache.geode.redis.internal.ByteArrayWrapper;
+import org.apache.geode.redis.internal.RedisData;
 import org.apache.geode.redis.internal.executor.hash.RedisHash;
 
 public class EmptyRedisHash extends RedisHash {
   @Override
-  public synchronized int hset(Region<ByteArrayWrapper, RedisHash> region, 
ByteArrayWrapper key,
+  public synchronized int hset(Region<ByteArrayWrapper, RedisData> region, 
ByteArrayWrapper key,
       List<ByteArrayWrapper> fieldsToSet, boolean nx) {
     throw new UnsupportedOperationException();
   }
 
   @Override
-  public synchronized int hdel(Region<ByteArrayWrapper, RedisHash> region, 
ByteArrayWrapper key,
+  public synchronized int hdel(Region<ByteArrayWrapper, RedisData> region, 
ByteArrayWrapper key,
       List<ByteArrayWrapper> fieldsToRemove) {
     return 0;
   }
@@ -41,4 +42,25 @@ public class EmptyRedisHash extends RedisHash {
   public synchronized Collection<ByteArrayWrapper> hgetall() {
     return emptyList();
   }
+
+  @Override
+  public synchronized boolean isEmpty() {
+    return true;
+  }
+
+  @Override
+  public synchronized boolean containsKey(ByteArrayWrapper field) {
+    return false;
+  }
+
+  @Override
+  public synchronized ByteArrayWrapper get(ByteArrayWrapper field) {
+    return null;
+  }
+
+  @Override
+  public synchronized int size() {
+    return 0;
+  }
+
 }
diff --git 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/FlushAllExecutor.java
 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/FlushAllExecutor.java
index 71712ec..2ca7fbd 100755
--- 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/FlushAllExecutor.java
+++ 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/FlushAllExecutor.java
@@ -18,9 +18,11 @@ import java.util.Map.Entry;
 
 import org.apache.geode.cache.EntryDestroyedException;
 import org.apache.geode.cache.UnsupportedOperationInTransactionException;
+import org.apache.geode.redis.internal.ByteArrayWrapper;
 import org.apache.geode.redis.internal.Coder;
 import org.apache.geode.redis.internal.Command;
 import org.apache.geode.redis.internal.ExecutionHandlerContext;
+import org.apache.geode.redis.internal.RedisData;
 import org.apache.geode.redis.internal.RedisDataType;
 
 public class FlushAllExecutor extends AbstractExecutor {
@@ -31,11 +33,11 @@ public class FlushAllExecutor extends AbstractExecutor {
       throw new UnsupportedOperationInTransactionException();
     }
 
-    for (Entry<String, RedisDataType> e : 
context.getKeyRegistrar().keyInfos()) {
+    for (Entry<ByteArrayWrapper, RedisData> e : 
context.getKeyRegistrar().keyInfos()) {
       try {
-        String skey = e.getKey();
-        RedisDataType type = e.getValue();
-        removeEntry(Coder.stringToByteWrapper(skey), type, context);
+        ByteArrayWrapper skey = e.getKey();
+        RedisDataType type = e.getValue().getType();
+        removeEntry(skey, type, context);
       } catch (EntryDestroyedException e1) {
         continue;
       }
diff --git 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/KeysExecutor.java
 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/KeysExecutor.java
index f4547ea..bf72668 100755
--- 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/KeysExecutor.java
+++ 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/KeysExecutor.java
@@ -20,6 +20,7 @@ import java.util.Set;
 import java.util.regex.Pattern;
 import java.util.regex.PatternSyntaxException;
 
+import org.apache.geode.redis.internal.ByteArrayWrapper;
 import org.apache.geode.redis.internal.Coder;
 import org.apache.geode.redis.internal.Command;
 import org.apache.geode.redis.internal.ExecutionHandlerContext;
@@ -39,7 +40,7 @@ public class KeysExecutor extends AbstractExecutor {
     }
 
     String glob = Coder.bytesToString(commandElems.get(1));
-    Set<String> allKeys = context.getKeyRegistrar().keys();
+    Set<ByteArrayWrapper> allKeys = context.getKeyRegistrar().keys();
     List<String> matchingKeys = new ArrayList<String>();
 
     Pattern pattern;
@@ -51,10 +52,14 @@ public class KeysExecutor extends AbstractExecutor {
       return;
     }
 
-    for (String key : allKeys) {
-      if (!(key.equals(GeodeRedisServer.REDIS_META_DATA_REGION)
-          || key.equals(GeodeRedisServer.STRING_REGION) || 
key.equals(GeodeRedisServer.HLL_REGION))
-          && pattern.matcher(key).matches()) {
+    for (ByteArrayWrapper bytesKey : allKeys) {
+      String key = bytesKey.toString();
+      if (key.equals(GeodeRedisServer.REDIS_DATA_REGION)
+          || key.equals(GeodeRedisServer.STRING_REGION)
+          || key.equals(GeodeRedisServer.HLL_REGION)) {
+        continue;
+      }
+      if (pattern.matcher(key).matches()) {
         matchingKeys.add(key);
       }
     }
diff --git 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/RedisHashInRegion.java
 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/RedisHashInRegion.java
index 359a3c5..0e3f8d4 100644
--- 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/RedisHashInRegion.java
+++ 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/RedisHashInRegion.java
@@ -16,35 +16,40 @@
 package org.apache.geode.redis.internal.executor;
 
 
+import static org.apache.geode.redis.internal.RedisDataType.REDIS_HASH;
+
 import java.util.Collection;
 import java.util.List;
 
 import org.apache.geode.cache.Region;
 import org.apache.geode.redis.internal.ByteArrayWrapper;
+import org.apache.geode.redis.internal.RedisConstants;
+import org.apache.geode.redis.internal.RedisData;
+import org.apache.geode.redis.internal.RedisDataTypeMismatchException;
 import org.apache.geode.redis.internal.executor.hash.RedisHash;
 import org.apache.geode.redis.internal.executor.hash.RedisHashCommands;
 
 public class RedisHashInRegion implements RedisHashCommands {
-  private final Region<ByteArrayWrapper, RedisHash> localRegion;
+  private final Region<ByteArrayWrapper, RedisData> region;
 
-  public RedisHashInRegion(Region<ByteArrayWrapper, RedisHash> localRegion) {
-    this.localRegion = localRegion;
+  public RedisHashInRegion(Region<ByteArrayWrapper, RedisData> region) {
+    this.region = region;
   }
 
   @Override
   public int hset(ByteArrayWrapper key, List<ByteArrayWrapper> fieldsToSet, 
boolean NX) {
-    RedisHash hash = localRegion.get(key);
+    RedisHash hash = checkType(region.get(key));
     if (hash != null) {
-      return hash.hset(localRegion, key, fieldsToSet, NX);
+      return hash.hset(region, key, fieldsToSet, NX);
     } else {
-      localRegion.put(key, new RedisHash(fieldsToSet));
+      region.put(key, new RedisHash(fieldsToSet));
       return fieldsToSet.size() / 2;
     }
   }
 
   @Override
   public int hdel(ByteArrayWrapper key, List<ByteArrayWrapper> fieldsToRemove) 
{
-    return getRedisHash(key).hdel(localRegion, key, fieldsToRemove);
+    return getRedisHash(key).hdel(region, key, fieldsToRemove);
   }
 
   @Override
@@ -54,10 +59,21 @@ public class RedisHashInRegion implements RedisHashCommands 
{
 
   @Override
   public boolean del(ByteArrayWrapper key) {
-    return localRegion.remove(key) != null;
+    return region.remove(key) != null;
   }
 
   private RedisHash getRedisHash(ByteArrayWrapper key) {
-    return localRegion.getOrDefault(key, RedisHash.EMPTY);
+    return checkType(region.getOrDefault(key, RedisHash.EMPTY));
+  }
+
+  public static RedisHash checkType(RedisData redisData) {
+    if (redisData == null) {
+      return null;
+    }
+    if (redisData.getType() != REDIS_HASH) {
+      throw new 
RedisDataTypeMismatchException(RedisConstants.ERROR_WRONG_TYPE);
+    }
+    return (RedisHash) redisData;
   }
+
 }
diff --git 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/RenameExecutor.java
 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/RenameExecutor.java
index d3c2a20..80a6b2e 100644
--- 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/RenameExecutor.java
+++ 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/RenameExecutor.java
@@ -15,7 +15,10 @@
 
 package org.apache.geode.redis.internal.executor;
 
+import java.util.ArrayList;
+import java.util.Collection;
 import java.util.List;
+import java.util.Set;
 
 import org.apache.geode.cache.Region;
 import org.apache.geode.redis.internal.AutoCloseableLock;
@@ -25,6 +28,10 @@ import org.apache.geode.redis.internal.Command;
 import org.apache.geode.redis.internal.ExecutionHandlerContext;
 import org.apache.geode.redis.internal.RedisConstants;
 import org.apache.geode.redis.internal.RedisDataType;
+import org.apache.geode.redis.internal.executor.hash.RedisHashCommands;
+import 
org.apache.geode.redis.internal.executor.hash.RedisHashCommandsFunctionExecutor;
+import org.apache.geode.redis.internal.executor.set.RedisSetCommands;
+import 
org.apache.geode.redis.internal.executor.set.RedisSetCommandsFunctionExecutor;
 import org.apache.geode.redis.internal.executor.string.StringExecutor;
 
 public class RenameExecutor extends StringExecutor {
@@ -40,21 +47,19 @@ public class RenameExecutor extends StringExecutor {
     ByteArrayWrapper key = command.getKey();
     ByteArrayWrapper newKey = new ByteArrayWrapper(commandElems.get(2));
 
-    if (!context.getKeyRegistrar().isRegistered(key)) {
-      command.setResponse(
-          Coder.getErrorResponse(context.getByteBufAllocator(), 
RedisConstants.ERROR_NO_SUCH_KEY));
-      return;
-    }
-
     try (@SuppressWarnings("unused")
     AutoCloseableLock lockForOldKey = context.getLockService().lock(key)) {
       try (@SuppressWarnings("unused")
       AutoCloseableLock lockForNewKey = context.getLockService().lock(newKey)) 
{
         RedisDataType redisDataType = context.getKeyRegistrar().getType(key);
+        if (redisDataType == null) {
+          command.setResponse(
+              Coder.getErrorResponse(context.getByteBufAllocator(),
+                  RedisConstants.ERROR_NO_SUCH_KEY));
+          return;
+        }
         switch (redisDataType) {
           case REDIS_STRING:
-          case REDIS_HASH:
-          case REDIS_SET:
             @SuppressWarnings("unchecked")
             Region<ByteArrayWrapper, Object> region =
                 (Region<ByteArrayWrapper, Object>) context.getRegionProvider()
@@ -64,6 +69,24 @@ public class RenameExecutor extends StringExecutor {
             region.put(newKey, value);
             removeEntry(key, redisDataType, context);
             break;
+          case REDIS_HASH:
+            // TODO this all needs to be done atomically. Add RENAME support 
to RedisHashCommands
+            RedisHashCommands redisHashCommands =
+                new 
RedisHashCommandsFunctionExecutor(context.getRegionProvider().getDataRegion());
+            Collection<ByteArrayWrapper> fieldsAndValues = 
redisHashCommands.hgetall(key);
+            redisHashCommands.del(key);
+            redisHashCommands.del(newKey);
+            redisHashCommands.hset(newKey, new ArrayList<>(fieldsAndValues), 
false);
+            break;
+          case REDIS_SET:
+            // TODO this all needs to be done atomically. Add RENAME support 
to RedisSetCommands
+            RedisSetCommands redisSetCommands =
+                new 
RedisSetCommandsFunctionExecutor(context.getRegionProvider().getDataRegion());
+            Set<ByteArrayWrapper> members = redisSetCommands.smembers(key);
+            redisSetCommands.del(key);
+            redisSetCommands.del(newKey);
+            redisSetCommands.sadd(newKey, new ArrayList<>(members));
+            break;
           case REDIS_LIST:
             throw new RuntimeException("Renaming List isn't supported");
           case REDIS_SORTEDSET:
diff --git 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/ScanExecutor.java
 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/ScanExecutor.java
index a092c28..1193e20 100755
--- 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/ScanExecutor.java
+++ 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/ScanExecutor.java
@@ -113,9 +113,9 @@ public class ScanExecutor extends AbstractScanExecutor {
     int numElements = 0;
     int i = -1;
     for (String key : (Collection<String>) list) {
-      if (key.equals(GeodeRedisServer.REDIS_META_DATA_REGION)
-          || key.equals(GeodeRedisServer.STRING_REGION) || key
-              .equals(GeodeRedisServer.HLL_REGION)) {
+      if (key.equals(GeodeRedisServer.REDIS_DATA_REGION)
+          || key.equals(GeodeRedisServer.STRING_REGION)
+          || key.equals(GeodeRedisServer.HLL_REGION)) {
         continue;
       }
       i++;
diff --git 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/HDelExecutor.java
 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/HDelExecutor.java
index 401e47e..4f41e10 100755
--- 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/HDelExecutor.java
+++ 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/HDelExecutor.java
@@ -21,7 +21,6 @@ import org.apache.geode.redis.internal.ByteArrayWrapper;
 import org.apache.geode.redis.internal.Coder;
 import org.apache.geode.redis.internal.Command;
 import org.apache.geode.redis.internal.ExecutionHandlerContext;
-import org.apache.geode.redis.internal.RedisDataType;
 
 /**
  * <pre>
@@ -47,17 +46,11 @@ public class HDelExecutor extends HashExecutor {
     List<ByteArrayWrapper> commandElems = 
command.getProcessedCommandWrappers();
 
     ByteArrayWrapper key = command.getKey();
-    checkDataType(key, RedisDataType.REDIS_HASH, context);
     RedisHashCommands redisHashCommands =
-        new 
RedisHashCommandsFunctionExecutor(context.getRegionProvider().getHashRegion());
+        new 
RedisHashCommandsFunctionExecutor(context.getRegionProvider().getDataRegion());
     ArrayList<ByteArrayWrapper> fieldsToDelete =
         new ArrayList<>(commandElems.subList(2, commandElems.size()));
     int numDeleted = redisHashCommands.hdel(key, fieldsToDelete);
-    if (numDeleted != 0) {
-      if (!context.getRegionProvider().getHashRegion().containsKey(key)) {
-        context.getKeyRegistrar().unregisterIfType(key, 
RedisDataType.REDIS_HASH);
-      }
-    }
     
command.setResponse(Coder.getIntegerResponse(context.getByteBufAllocator(), 
numDeleted));
   }
 
diff --git 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/HExistsExecutor.java
 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/HExistsExecutor.java
index 1c378ac..b00ac51 100755
--- 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/HExistsExecutor.java
+++ 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/HExistsExecutor.java
@@ -16,8 +16,6 @@ package org.apache.geode.redis.internal.executor.hash;
 
 import java.util.List;
 
-import org.apache.geode.cache.TimeoutException;
-import org.apache.geode.redis.internal.AutoCloseableLock;
 import org.apache.geode.redis.internal.ByteArrayWrapper;
 import org.apache.geode.redis.internal.Coder;
 import org.apache.geode.redis.internal.Command;
@@ -49,23 +47,11 @@ public class HExistsExecutor extends HashExecutor {
   public void executeCommand(Command command, ExecutionHandlerContext context) 
{
     List<byte[]> commandElems = command.getProcessedCommand();
 
-    boolean hasField;
     byte[] byteField = commandElems.get(FIELD_INDEX);
     ByteArrayWrapper field = new ByteArrayWrapper(byteField);
     ByteArrayWrapper key = command.getKey();
-    try (AutoCloseableLock regionLock = withRegionLock(context, key)) {
-      RedisHash map = getMap(context, key);
-      hasField = map.containsKey(field);
-    } catch (InterruptedException e) {
-      Thread.currentThread().interrupt();
-      command.setResponse(
-          Coder.getErrorResponse(context.getByteBufAllocator(), "Thread 
interrupted."));
-      return;
-    } catch (TimeoutException e) {
-      command.setResponse(Coder.getErrorResponse(context.getByteBufAllocator(),
-          "Timeout acquiring lock. Please try again."));
-      return;
-    }
+    RedisHash map = getRedisHash(context, key);
+    boolean hasField = map.containsKey(field);
 
     if (hasField) {
       
command.setResponse(Coder.getIntegerResponse(context.getByteBufAllocator(), 
EXISTS));
diff --git 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/HGetAllExecutor.java
 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/HGetAllExecutor.java
index 6240528..c4406ec 100755
--- 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/HGetAllExecutor.java
+++ 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/HGetAllExecutor.java
@@ -48,7 +48,7 @@ public class HGetAllExecutor extends HashExecutor {
   public void executeCommand(Command command, ExecutionHandlerContext context) 
{
     ByteArrayWrapper key = command.getKey();
     RedisHashCommands redisHashCommands =
-        new 
RedisHashCommandsFunctionExecutor(context.getRegionProvider().getHashRegion());
+        new 
RedisHashCommandsFunctionExecutor(context.getRegionProvider().getDataRegion());
     Collection<ByteArrayWrapper> fieldsAndValues = 
redisHashCommands.hgetall(key);
     try {
       
command.setResponse(Coder.getArrayResponse(context.getByteBufAllocator(), 
fieldsAndValues));
diff --git 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/HGetExecutor.java
 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/HGetExecutor.java
index 7825d02..688265f 100755
--- 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/HGetExecutor.java
+++ 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/HGetExecutor.java
@@ -47,8 +47,8 @@ public class HGetExecutor extends HashExecutor {
 
     ByteArrayWrapper key = command.getKey();
 
-    RedisHash entry = getMap(context, key);
-    ByteArrayWrapper valueWrapper = entry.get(field);
+    RedisHash redisHash = getRedisHash(context, key);
+    ByteArrayWrapper valueWrapper = redisHash.get(field);
     try {
       if (valueWrapper != null) {
         command.setResponse(
diff --git 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/HIncrByExecutor.java
 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/HIncrByExecutor.java
index 3c2bb95..5acc6c9 100755
--- 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/HIncrByExecutor.java
+++ 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/HIncrByExecutor.java
@@ -77,7 +77,7 @@ public class HIncrByExecutor extends HashExecutor {
     long value;
 
     try (AutoCloseableLock regionLock = withRegionLock(context, key)) {
-      RedisHash map = getMap(context, key);
+      RedisHash redisHash = getModifiableRedisHash(context, key);
 
       byte[] byteField = commandElems.get(FIELD_INDEX);
       ByteArrayWrapper field = new ByteArrayWrapper(byteField);
@@ -86,12 +86,13 @@ public class HIncrByExecutor extends HashExecutor {
        * Put increment as value if field doesn't exist
        */
 
-      ByteArrayWrapper oldValue = map.get(field);
+      ByteArrayWrapper oldValue = redisHash.get(field);
 
       if (oldValue == null) {
-        map.put(field, new ByteArrayWrapper(incrArray));
+        ByteArrayWrapper newValue = new ByteArrayWrapper(incrArray);
+        redisHash.put(field, newValue);
 
-        saveMap(map, context, key);
+        saveRedishHash(redisHash, context, key);
 
         
command.setResponse(Coder.getIntegerResponse(context.getByteBufAllocator(), 
increment));
 
@@ -114,15 +115,16 @@ public class HIncrByExecutor extends HashExecutor {
        */
       if ((value >= 0 && increment > (Long.MAX_VALUE - value))
           || (value <= 0 && increment < (Long.MIN_VALUE - value))) {
-        
command.setResponse(Coder.getErrorResponse(context.getByteBufAllocator(), 
ERROR_OVERFLOW));
+        command
+            .setResponse(Coder.getErrorResponse(context.getByteBufAllocator(), 
ERROR_OVERFLOW));
         return;
       }
 
       value += increment;
 
-      map.put(field, new ByteArrayWrapper(Coder.longToBytes(value)));
+      redisHash.put(field, new ByteArrayWrapper(Coder.longToBytes(value)));
 
-      saveMap(map, context, key);
+      saveRedishHash(redisHash, context, key);
     } catch (InterruptedException e) {
       Thread.currentThread().interrupt();
       command.setResponse(
diff --git 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/HIncrByFloatExecutor.java
 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/HIncrByFloatExecutor.java
index e416f03..c6ac788 100755
--- 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/HIncrByFloatExecutor.java
+++ 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/HIncrByFloatExecutor.java
@@ -76,7 +76,7 @@ public class HIncrByFloatExecutor extends HashExecutor {
     double value;
 
     try (AutoCloseableLock regionLock = withRegionLock(context, key)) {
-      RedisHash map = getMap(context, key);
+      RedisHash redisHash = getModifiableRedisHash(context, key);
 
       byte[] byteField = commandElems.get(FIELD_INDEX);
       ByteArrayWrapper field = new ByteArrayWrapper(byteField);
@@ -85,12 +85,13 @@ public class HIncrByFloatExecutor extends HashExecutor {
        * Put increment as value if field doesn't exist
        */
 
-      ByteArrayWrapper oldValue = map.get(field);
+      ByteArrayWrapper oldValue = redisHash.get(field);
 
       if (oldValue == null) {
-        map.put(field, new ByteArrayWrapper(incrArray));
+        ByteArrayWrapper newValue = new ByteArrayWrapper(incrArray);
+        redisHash.put(field, newValue);
 
-        this.saveMap(map, context, key);
+        saveRedishHash(redisHash, context, key);
 
         respondBulkStrings(command, context, increment);
         return;
@@ -115,9 +116,9 @@ public class HIncrByFloatExecutor extends HashExecutor {
       }
 
       value += increment;
-      map.put(field, new ByteArrayWrapper(Coder.doubleToBytes(value)));
+      redisHash.put(field, new ByteArrayWrapper(Coder.doubleToBytes(value)));
 
-      this.saveMap(map, context, key);
+      saveRedishHash(redisHash, context, key);
     } catch (InterruptedException e) {
       Thread.currentThread().interrupt();
       command.setResponse(
diff --git 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/HKeysExecutor.java
 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/HKeysExecutor.java
index 306a417..732332c 100755
--- 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/HKeysExecutor.java
+++ 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/HKeysExecutor.java
@@ -14,10 +14,7 @@
  */
 package org.apache.geode.redis.internal.executor.hash;
 
-import java.util.List;
 
-import org.apache.geode.cache.TimeoutException;
-import org.apache.geode.redis.internal.AutoCloseableLock;
 import org.apache.geode.redis.internal.ByteArrayWrapper;
 import org.apache.geode.redis.internal.Coder;
 import org.apache.geode.redis.internal.Command;
@@ -46,26 +43,12 @@ public class HKeysExecutor extends HashExecutor {
   @Override
   public void executeCommand(Command command, ExecutionHandlerContext context) 
{
     ByteArrayWrapper key = command.getKey();
-    List<ByteArrayWrapper> keys;
-    try (AutoCloseableLock regionLock = withRegionLock(context, key)) {
-      RedisHash keyMap = getMap(context, key);
-      keys = keyMap.keys();
-    } catch (InterruptedException e) {
-      Thread.currentThread().interrupt();
-      command.setResponse(
-          Coder.getErrorResponse(context.getByteBufAllocator(), "Thread 
interrupted."));
-      return;
-    } catch (TimeoutException e) {
-      command.setResponse(Coder.getErrorResponse(context.getByteBufAllocator(),
-          "Timeout acquiring lock. Please try again."));
-      return;
-    }
-
-    if (keys.isEmpty()) {
+    RedisHash keyMap = getRedisHash(context, key);
+    if (keyMap.isEmpty()) {
       
command.setResponse(Coder.getEmptyArrayResponse(context.getByteBufAllocator()));
       return;
     }
 
-    respondBulkStrings(command, context, keys);
+    respondBulkStrings(command, context, keyMap.keys());
   }
 }
diff --git 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/HLenExecutor.java
 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/HLenExecutor.java
index 9a89311..85fb952 100755
--- 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/HLenExecutor.java
+++ 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/HLenExecutor.java
@@ -15,8 +15,6 @@
 package org.apache.geode.redis.internal.executor.hash;
 
 
-import org.apache.geode.cache.TimeoutException;
-import org.apache.geode.redis.internal.AutoCloseableLock;
 import org.apache.geode.redis.internal.ByteArrayWrapper;
 import org.apache.geode.redis.internal.Coder;
 import org.apache.geode.redis.internal.Command;
@@ -40,23 +38,8 @@ public class HLenExecutor extends HashExecutor {
   @Override
   public void executeCommand(Command command, ExecutionHandlerContext context) 
{
     ByteArrayWrapper key = command.getKey();
-    final int size;
-
-    try (AutoCloseableLock regionLock = withRegionLock(context, key)) {
-      RedisHash map = getMap(context, key);
-      size = map.size();
-    } catch (InterruptedException e) {
-      Thread.currentThread().interrupt();
-      command.setResponse(
-          Coder.getErrorResponse(context.getByteBufAllocator(), "Thread 
interrupted."));
-      return;
-    } catch (TimeoutException e) {
-      command.setResponse(Coder.getErrorResponse(context.getByteBufAllocator(),
-          "Timeout acquiring lock. Please try again."));
-      return;
-    }
-
-    
command.setResponse(Coder.getIntegerResponse(context.getByteBufAllocator(), 
size));
+    RedisHash map = getRedisHash(context, key);
+    
command.setResponse(Coder.getIntegerResponse(context.getByteBufAllocator(), 
map.size()));
   }
 
 }
diff --git 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/HMGetExecutor.java
 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/HMGetExecutor.java
index cabf567..6c77b28 100755
--- 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/HMGetExecutor.java
+++ 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/HMGetExecutor.java
@@ -20,7 +20,6 @@ import java.util.List;
 import org.apache.geode.redis.internal.ByteArrayWrapper;
 import org.apache.geode.redis.internal.Command;
 import org.apache.geode.redis.internal.ExecutionHandlerContext;
-import org.apache.geode.redis.internal.RedisDataType;
 
 /**
  * <pre>
@@ -48,9 +47,7 @@ public class HMGetExecutor extends HashExecutor {
 
     ByteArrayWrapper key = command.getKey();
 
-    RedisHash map = getMap(context, key);
-
-    checkDataType(key, RedisDataType.REDIS_HASH, context);
+    RedisHash map = getRedisHash(context, key);
 
     ArrayList<ByteArrayWrapper> fields = new ArrayList<ByteArrayWrapper>();
     for (int i = 2; i < commandElems.size(); i++) {
diff --git 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/HMSetExecutor.java
 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/HMSetExecutor.java
index f752a4a..ac0d990 100755
--- 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/HMSetExecutor.java
+++ 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/HMSetExecutor.java
@@ -21,7 +21,6 @@ import org.apache.geode.redis.internal.ByteArrayWrapper;
 import org.apache.geode.redis.internal.Coder;
 import org.apache.geode.redis.internal.Command;
 import org.apache.geode.redis.internal.ExecutionHandlerContext;
-import org.apache.geode.redis.internal.RedisDataType;
 
 /**
  * <pre>
@@ -52,9 +51,8 @@ public class HMSetExecutor extends HashExecutor {
     List<ByteArrayWrapper> commandElems = 
command.getProcessedCommandWrappers();
 
     ByteArrayWrapper key = command.getKey();
-    context.getKeyRegistrar().register(key, RedisDataType.REDIS_HASH);
     RedisHashCommands redisHashCommands =
-        new 
RedisHashCommandsFunctionExecutor(context.getRegionProvider().getHashRegion());
+        new 
RedisHashCommandsFunctionExecutor(context.getRegionProvider().getDataRegion());
     ArrayList<ByteArrayWrapper> fieldsToSet =
         new ArrayList<>(commandElems.subList(2, commandElems.size()));
     redisHashCommands.hset(key, fieldsToSet, false);
diff --git 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/HScanExecutor.java
 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/HScanExecutor.java
index 0c738cf..4c47e29 100755
--- 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/HScanExecutor.java
+++ 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/HScanExecutor.java
@@ -14,6 +14,8 @@
  */
 package org.apache.geode.redis.internal.executor.hash;
 
+import static 
org.apache.geode.redis.internal.executor.RedisHashInRegion.checkType;
+
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.List;
@@ -40,10 +42,9 @@ public class HScanExecutor extends AbstractScanExecutor {
 
     ByteArrayWrapper key = command.getKey();
 
-    RedisHash hash =
-        context.getRegionProvider().getHashRegion().get(key);
+    RedisHash hash = 
checkType(context.getRegionProvider().getDataRegion().get(key));
 
-    if (hash == null || hash.isEmpty()) {
+    if (hash.isEmpty()) {
       
command.setResponse(Coder.getErrorResponse(context.getByteBufAllocator(), 
ERROR_CURSOR));
       return;
     }
diff --git 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/HSetExecutor.java
 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/HSetExecutor.java
index 3749b4b..565a876 100755
--- 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/HSetExecutor.java
+++ 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/HSetExecutor.java
@@ -21,7 +21,6 @@ import org.apache.geode.redis.internal.ByteArrayWrapper;
 import org.apache.geode.redis.internal.Coder;
 import org.apache.geode.redis.internal.Command;
 import org.apache.geode.redis.internal.ExecutionHandlerContext;
-import org.apache.geode.redis.internal.RedisDataType;
 
 /**
  * <pre>
@@ -45,10 +44,9 @@ public class HSetExecutor extends HashExecutor {
     List<ByteArrayWrapper> commandElems = 
command.getProcessedCommandWrappers();
 
     ByteArrayWrapper key = command.getKey();
-    context.getKeyRegistrar().register(key, RedisDataType.REDIS_HASH);
 
     RedisHashCommands redisHashCommands =
-        new 
RedisHashCommandsFunctionExecutor(context.getRegionProvider().getHashRegion());
+        new 
RedisHashCommandsFunctionExecutor(context.getRegionProvider().getDataRegion());
 
     ArrayList<ByteArrayWrapper> fieldsToSet =
         new ArrayList<>(commandElems.subList(2, commandElems.size()));
diff --git 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/HValsExecutor.java
 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/HValsExecutor.java
index 6d26658..5993220 100755
--- 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/HValsExecutor.java
+++ 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/HValsExecutor.java
@@ -14,13 +14,11 @@
  */
 package org.apache.geode.redis.internal.executor.hash;
 
-import java.util.Collection;
 
 import org.apache.geode.redis.internal.ByteArrayWrapper;
 import org.apache.geode.redis.internal.Coder;
 import org.apache.geode.redis.internal.Command;
 import org.apache.geode.redis.internal.ExecutionHandlerContext;
-import org.apache.geode.redis.internal.RedisDataType;
 
 /**
  * <pre>
@@ -51,23 +49,15 @@ public class HValsExecutor extends HashExecutor {
   @Override
   public void executeCommand(Command command, ExecutionHandlerContext context) 
{
     ByteArrayWrapper key = command.getKey();
-    checkDataType(key, RedisDataType.REDIS_HASH, context);
 
-    RedisHash map =
-        context.getRegionProvider().getHashRegion().get(key);
+    RedisHash map = getRedisHash(context, key);
 
-    if (map == null) {
+    if (map.isEmpty()) {
       
command.setResponse(Coder.getEmptyArrayResponse(context.getByteBufAllocator()));
       return;
     }
 
-    Collection<ByteArrayWrapper> vals = map.values();
-    if (vals.isEmpty()) {
-      
command.setResponse(Coder.getEmptyArrayResponse(context.getByteBufAllocator()));
-      return;
-    }
-
-    respondBulkStrings(command, context, vals);
+    respondBulkStrings(command, context, map.values());
   }
 
 }
diff --git 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/HashExecutor.java
 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/HashExecutor.java
index ae40357..7deaf4f 100755
--- 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/HashExecutor.java
+++ 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/HashExecutor.java
@@ -21,10 +21,11 @@ import org.apache.geode.cache.TimeoutException;
 import org.apache.geode.redis.internal.AutoCloseableLock;
 import org.apache.geode.redis.internal.ByteArrayWrapper;
 import org.apache.geode.redis.internal.ExecutionHandlerContext;
-import org.apache.geode.redis.internal.RedisDataType;
+import org.apache.geode.redis.internal.RedisData;
 import org.apache.geode.redis.internal.RedisLockService;
 import org.apache.geode.redis.internal.RegionProvider;
 import org.apache.geode.redis.internal.executor.AbstractExecutor;
+import org.apache.geode.redis.internal.executor.RedisHashInRegion;
 
 /**
  * Executor for handling HASH datatypes
@@ -41,17 +42,28 @@ public abstract class HashExecutor extends AbstractExecutor 
{
    * @param key the region hash key region:<key>
    * @return the map data
    */
-  protected RedisHash getMap(ExecutionHandlerContext context,
+  protected RedisHash getRedisHash(ExecutionHandlerContext context,
       ByteArrayWrapper key) {
-    Region<ByteArrayWrapper, RedisHash> region =
-        context.getRegionProvider().getHashRegion();
+    Region<ByteArrayWrapper, RedisData> region =
+        context.getRegionProvider().getDataRegion();
 
-    RedisHash map = region.get(key);
-    if (map == null) {
-      map = new RedisHash(emptyList());
+    RedisData data = region.get(key);
+    if (data == null) {
+      return RedisHash.EMPTY;
     }
+    return RedisHashInRegion.checkType(data);
+  }
+
+  protected RedisHash getModifiableRedisHash(ExecutionHandlerContext context,
+      ByteArrayWrapper key) {
+    Region<ByteArrayWrapper, RedisData> region =
+        context.getRegionProvider().getDataRegion();
 
-    return map;
+    RedisData data = region.get(key);
+    if (data == null) {
+      return new RedisHash(emptyList());
+    }
+    return RedisHashInRegion.checkType(data);
   }
 
   protected AutoCloseableLock withRegionLock(ExecutionHandlerContext context, 
ByteArrayWrapper key)
@@ -63,22 +75,22 @@ public abstract class HashExecutor extends AbstractExecutor 
{
 
 
   /**
-   * Save the map information to a region
+   * Save the redisHash information to a region
    *
-   * @param map the map to save
+   * @param redisHash the redisHash to save
    * @param context the execution handler context
    * @param key the raw HASH key
    */
-  protected void saveMap(RedisHash map,
-      ExecutionHandlerContext context, ByteArrayWrapper key) {
+  protected void saveRedishHash(RedisHash redisHash,
+      ExecutionHandlerContext context,
+      ByteArrayWrapper key) {
 
-    if (map == null) {
+    if (redisHash == null) {
       return;
     }
 
     RegionProvider rp = context.getRegionProvider();
 
-    rp.getHashRegion().put(key, map);
-    context.getKeyRegistrar().register(key, RedisDataType.REDIS_HASH);
+    rp.getDataRegion().put(key, redisHash);
   }
 }
diff --git 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/RedisHash.java
 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/RedisHash.java
index 706bf15..c4ece14 100644
--- 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/RedisHash.java
+++ 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/RedisHash.java
@@ -26,15 +26,15 @@ import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
 
-import org.apache.geode.DataSerializable;
 import org.apache.geode.DataSerializer;
-import org.apache.geode.Delta;
 import org.apache.geode.InvalidDeltaException;
 import org.apache.geode.cache.Region;
 import org.apache.geode.redis.internal.ByteArrayWrapper;
+import org.apache.geode.redis.internal.RedisData;
+import org.apache.geode.redis.internal.RedisDataType;
 import org.apache.geode.redis.internal.executor.EmptyRedisHash;
 
-public class RedisHash implements Delta, DataSerializable {
+public class RedisHash implements RedisData {
   public static final RedisHash EMPTY = new EmptyRedisHash();
   private HashMap<ByteArrayWrapper, ByteArrayWrapper> hash;
   /**
@@ -101,7 +101,7 @@ public class RedisHash implements Delta, DataSerializable {
     }
   }
 
-  public synchronized int hset(Region<ByteArrayWrapper, RedisHash> region, 
ByteArrayWrapper key,
+  public synchronized int hset(Region<ByteArrayWrapper, RedisData> region, 
ByteArrayWrapper key,
       List<ByteArrayWrapper> fieldsToSet, boolean nx) {
     int fieldsAdded = 0;
     Iterator<ByteArrayWrapper> iterator = fieldsToSet.iterator();
@@ -127,7 +127,7 @@ public class RedisHash implements Delta, DataSerializable {
     return fieldsAdded;
   }
 
-  public synchronized int hdel(Region<ByteArrayWrapper, RedisHash> region, 
ByteArrayWrapper key,
+  public synchronized int hdel(Region<ByteArrayWrapper, RedisData> region, 
ByteArrayWrapper key,
       List<ByteArrayWrapper> fieldsToRemove) {
     int fieldsRemoved = 0;
     for (ByteArrayWrapper fieldToRemove : fieldsToRemove) {
@@ -152,7 +152,7 @@ public class RedisHash implements Delta, DataSerializable {
     return result;
   }
 
-  private void storeChanges(Region<ByteArrayWrapper, RedisHash> region, 
ByteArrayWrapper key,
+  private void storeChanges(Region<ByteArrayWrapper, RedisData> region, 
ByteArrayWrapper key,
       boolean doingAdds) {
     if (hasDelta()) {
       if (!doingAdds && hash.isEmpty()) {
@@ -201,4 +201,9 @@ public class RedisHash implements Delta, DataSerializable {
   public synchronized boolean containsKey(ByteArrayWrapper field) {
     return hash.containsKey(field);
   }
+
+  @Override
+  public RedisDataType getType() {
+    return RedisDataType.REDIS_HASH;
+  }
 }
diff --git 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/RedisHashCommandsFunctionExecutor.java
 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/RedisHashCommandsFunctionExecutor.java
index f1c8e17..7340482 100644
--- 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/RedisHashCommandsFunctionExecutor.java
+++ 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/hash/RedisHashCommandsFunctionExecutor.java
@@ -25,15 +25,16 @@ import java.util.List;
 
 import org.apache.geode.cache.Region;
 import org.apache.geode.redis.internal.ByteArrayWrapper;
+import org.apache.geode.redis.internal.RedisData;
 import org.apache.geode.redis.internal.RedisDataType;
 import org.apache.geode.redis.internal.executor.CommandFunction;
 
 @SuppressWarnings("unchecked")
 public class RedisHashCommandsFunctionExecutor implements RedisHashCommands {
 
-  private final Region<ByteArrayWrapper, RedisHash> region;
+  private final Region<ByteArrayWrapper, RedisData> region;
 
-  public RedisHashCommandsFunctionExecutor(Region region) {
+  public RedisHashCommandsFunctionExecutor(Region<ByteArrayWrapper, RedisData> 
region) {
     this.region = region;
   }
 
diff --git 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/EmptyRedisSet.java
 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/EmptyRedisSet.java
index 396aaa7..284b700 100644
--- 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/EmptyRedisSet.java
+++ 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/EmptyRedisSet.java
@@ -22,11 +22,11 @@ import java.util.ArrayList;
 import java.util.Collection;
 import java.util.List;
 import java.util.Set;
-import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.regex.Pattern;
 
 import org.apache.geode.cache.Region;
 import org.apache.geode.redis.internal.ByteArrayWrapper;
+import org.apache.geode.redis.internal.RedisData;
 
 class EmptyRedisSet extends RedisSet {
 
@@ -36,7 +36,7 @@ class EmptyRedisSet extends RedisSet {
   }
 
   @Override
-  synchronized Collection<ByteArrayWrapper> spop(Region<ByteArrayWrapper, 
RedisSet> region,
+  synchronized Collection<ByteArrayWrapper> spop(Region<ByteArrayWrapper, 
RedisData> region,
       ByteArrayWrapper key, int popCount) {
     return emptyList();
   }
@@ -58,14 +58,13 @@ class EmptyRedisSet extends RedisSet {
 
   @Override
   synchronized long sadd(ArrayList<ByteArrayWrapper> membersToAdd,
-      Region<ByteArrayWrapper, RedisSet> region, ByteArrayWrapper key) {
+      Region<ByteArrayWrapper, RedisData> region, ByteArrayWrapper key) {
     throw new UnsupportedOperationException();
   }
 
   @Override
   synchronized long srem(ArrayList<ByteArrayWrapper> membersToRemove,
-      Region<ByteArrayWrapper, RedisSet> region, ByteArrayWrapper key,
-      AtomicBoolean setWasDeleted) {
+      Region<ByteArrayWrapper, RedisData> region, ByteArrayWrapper key) {
     return 0;
   }
 
diff --git 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/RedisSet.java
 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/RedisSet.java
index a05bd96..4804b39 100644
--- 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/RedisSet.java
+++ 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/RedisSet.java
@@ -16,6 +16,7 @@
 package org.apache.geode.redis.internal.executor.set;
 
 import static java.util.Collections.emptyList;
+import static org.apache.geode.redis.internal.RedisDataType.REDIS_SET;
 
 import java.io.DataInput;
 import java.io.DataOutput;
@@ -26,16 +27,15 @@ import java.util.HashSet;
 import java.util.List;
 import java.util.Random;
 import java.util.Set;
-import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.regex.Pattern;
 
-import org.apache.geode.DataSerializable;
 import org.apache.geode.DataSerializer;
-import org.apache.geode.Delta;
 import org.apache.geode.InvalidDeltaException;
 import org.apache.geode.cache.Region;
 import org.apache.geode.redis.internal.ByteArrayWrapper;
 import org.apache.geode.redis.internal.Coder;
+import org.apache.geode.redis.internal.RedisData;
+import org.apache.geode.redis.internal.RedisDataType;
 
 /**
  * This class still uses "synchronized" to protect the
@@ -44,7 +44,7 @@ import org.apache.geode.redis.internal.Coder;
  * class can be removed once readers are changed to
  * also use the {@link SynchronizedStripedExecutor}.
  */
-public class RedisSet implements Delta, DataSerializable {
+public class RedisSet implements RedisData {
 
   public static transient RedisSet EMPTY = new EmptyRedisSet();
   private HashSet<ByteArrayWrapper> members;
@@ -65,6 +65,7 @@ public class RedisSet implements Delta, DataSerializable {
   public RedisSet() {}
 
   synchronized List<Object> sscan(Pattern matchPattern, int count, int cursor) 
{
+
     List<Object> returnList = new ArrayList<>();
     int size = members.size();
     int beforeCursor = 0;
@@ -100,14 +101,13 @@ public class RedisSet implements Delta, DataSerializable {
   }
 
   synchronized Collection<ByteArrayWrapper> spop(
-      Region<ByteArrayWrapper, RedisSet> region, ByteArrayWrapper key, int 
popCount) {
+      Region<ByteArrayWrapper, RedisData> region, ByteArrayWrapper key, int 
popCount) {
     int originalSize = scard();
     if (originalSize == 0) {
       return emptyList();
     }
 
     if (popCount >= originalSize) {
-      // TODO: need to also cause key to be removed from the metaregion
       region.remove(key, this);
       return this.members;
     }
@@ -218,10 +218,10 @@ public class RedisSet implements Delta, DataSerializable {
    *        modified by this call
    * @param region the region this instance is stored in
    * @param key the name of the set to add to
-   * @return the number of members actually added; -1 if concurrent 
modification
+   * @return the number of members actually added
    */
   synchronized long sadd(ArrayList<ByteArrayWrapper> membersToAdd,
-      Region<ByteArrayWrapper, RedisSet> region,
+      Region<ByteArrayWrapper, RedisData> region,
       ByteArrayWrapper key) {
 
     membersToAdd.removeIf(memberToAdd -> !members.add(memberToAdd));
@@ -243,21 +243,17 @@ public class RedisSet implements Delta, DataSerializable {
    *        modified by this call
    * @param region the region this instance is stored in
    * @param key the name of the set to remove from
-   * @param setWasDeleted set to true if this method deletes the set
-   * @return the number of members actually removed; -1 if concurrent 
modification
+   * @return the number of members actually removed
    */
   synchronized long srem(ArrayList<ByteArrayWrapper> membersToRemove,
-      Region<ByteArrayWrapper, RedisSet> region,
-      ByteArrayWrapper key, AtomicBoolean setWasDeleted) {
+      Region<ByteArrayWrapper, RedisData> region,
+      ByteArrayWrapper key) {
 
     membersToRemove.removeIf(memberToRemove -> 
!members.remove(memberToRemove));
     int membersRemoved = membersToRemove.size();
     if (membersRemoved != 0) {
       if (members.isEmpty()) {
         region.remove(key);
-        if (setWasDeleted != null) {
-          setWasDeleted.set(true);
-        }
       } else {
         deltasAreAdds = false;
         deltas = membersToRemove;
@@ -280,4 +276,9 @@ public class RedisSet implements Delta, DataSerializable {
   synchronized Set<ByteArrayWrapper> smembers() {
     return new HashSet<>(members);
   }
+
+  @Override
+  public RedisDataType getType() {
+    return REDIS_SET;
+  }
 }
diff --git 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/RedisSetCommands.java
 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/RedisSetCommands.java
index de29ff0..53f06e5 100644
--- 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/RedisSetCommands.java
+++ 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/RedisSetCommands.java
@@ -19,7 +19,6 @@ import java.util.ArrayList;
 import java.util.Collection;
 import java.util.List;
 import java.util.Set;
-import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.regex.Pattern;
 
 import org.apache.geode.redis.internal.ByteArrayWrapper;
@@ -28,8 +27,7 @@ public interface RedisSetCommands {
 
   long sadd(ByteArrayWrapper key, ArrayList<ByteArrayWrapper> membersToAdd);
 
-  long srem(ByteArrayWrapper key, ArrayList<ByteArrayWrapper> membersToAdd,
-      AtomicBoolean setWasDeleted);
+  long srem(ByteArrayWrapper key, ArrayList<ByteArrayWrapper> membersToRemove);
 
   Set<ByteArrayWrapper> smembers(ByteArrayWrapper key);
 
diff --git 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/RedisSetCommandsFunctionExecutor.java
 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/RedisSetCommandsFunctionExecutor.java
index 53c0d6c..97a456c 100644
--- 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/RedisSetCommandsFunctionExecutor.java
+++ 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/RedisSetCommandsFunctionExecutor.java
@@ -29,19 +29,19 @@ import java.util.ArrayList;
 import java.util.Collection;
 import java.util.List;
 import java.util.Set;
-import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.regex.Pattern;
 
 import org.apache.geode.cache.Region;
 import org.apache.geode.redis.internal.ByteArrayWrapper;
+import org.apache.geode.redis.internal.RedisData;
 import org.apache.geode.redis.internal.RedisDataType;
 import org.apache.geode.redis.internal.executor.CommandFunction;
 
 public class RedisSetCommandsFunctionExecutor implements RedisSetCommands {
 
-  private final Region<ByteArrayWrapper, RedisSet> region;
+  private final Region<ByteArrayWrapper, RedisData> region;
 
-  public RedisSetCommandsFunctionExecutor(Region<ByteArrayWrapper, RedisSet> 
region) {
+  public RedisSetCommandsFunctionExecutor(Region<ByteArrayWrapper, RedisData> 
region) {
     this.region = region;
   }
 
@@ -52,15 +52,8 @@ public class RedisSetCommandsFunctionExecutor implements 
RedisSetCommands {
 
   @SuppressWarnings("unchecked")
   @Override
-  public long srem(ByteArrayWrapper key, ArrayList<ByteArrayWrapper> 
membersToRemove,
-      AtomicBoolean setWasDeleted) {
-    Object[] resultList =
-        CommandFunction.execute(SREM, key, membersToRemove, region);
-
-    long membersRemoved = (long) resultList[0];
-    Boolean wasDeleted = (Boolean) resultList[1];
-    setWasDeleted.set(wasDeleted);
-    return membersRemoved;
+  public long srem(ByteArrayWrapper key, ArrayList<ByteArrayWrapper> 
membersToRemove) {
+    return CommandFunction.execute(SREM, key, membersToRemove, region);
   }
 
   @Override
diff --git 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/RedisSetInRegion.java
 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/RedisSetInRegion.java
index ac19b22..70c1339 100644
--- 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/RedisSetInRegion.java
+++ 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/RedisSetInRegion.java
@@ -15,15 +15,19 @@
 
 package org.apache.geode.redis.internal.executor.set;
 
+import static org.apache.geode.redis.internal.RedisDataType.REDIS_SET;
+
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.List;
 import java.util.Set;
-import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.regex.Pattern;
 
 import org.apache.geode.cache.Region;
 import org.apache.geode.redis.internal.ByteArrayWrapper;
+import org.apache.geode.redis.internal.RedisConstants;
+import org.apache.geode.redis.internal.RedisData;
+import org.apache.geode.redis.internal.RedisDataTypeMismatchException;
 
 /**
  * This class still uses "synchronized" to protect the underlying HashSet even 
though all writers do
@@ -31,10 +35,10 @@ import org.apache.geode.redis.internal.ByteArrayWrapper;
  * removed once readers are changed to also use the {@link 
SynchronizedStripedExecutor}.
  */
 public class RedisSetInRegion implements RedisSetCommands {
-  private final Region<ByteArrayWrapper, RedisSet> region;
+  private final Region<ByteArrayWrapper, RedisData> region;
 
   @SuppressWarnings("unchecked")
-  public RedisSetInRegion(Region<ByteArrayWrapper, RedisSet> region) {
+  public RedisSetInRegion(Region<ByteArrayWrapper, RedisData> region) {
     this.region = region;
   }
 
@@ -43,7 +47,7 @@ public class RedisSetInRegion implements RedisSetCommands {
       ByteArrayWrapper key,
       ArrayList<ByteArrayWrapper> membersToAdd) {
 
-    RedisSet redisSet = region.get(key);
+    RedisSet redisSet = checkType(region.get(key));
 
     if (redisSet != null) {
       return redisSet.sadd(membersToAdd, region, key);
@@ -56,8 +60,8 @@ public class RedisSetInRegion implements RedisSetCommands {
   @Override
   public long srem(
       ByteArrayWrapper key,
-      ArrayList<ByteArrayWrapper> membersToRemove, AtomicBoolean 
setWasDeleted) {
-    return getRedisSet(key).srem(membersToRemove, region, key, setWasDeleted);
+      ArrayList<ByteArrayWrapper> membersToRemove) {
+    return getRedisSet(key).srem(membersToRemove, region, key);
   }
 
   @Override
@@ -101,6 +105,17 @@ public class RedisSetInRegion implements RedisSetCommands {
   }
 
   private RedisSet getRedisSet(ByteArrayWrapper key) {
-    return region.getOrDefault(key, RedisSet.EMPTY);
+    return checkType(region.getOrDefault(key, RedisSet.EMPTY));
+  }
+
+  private RedisSet checkType(RedisData redisData) {
+    if (redisData == null) {
+      return null;
+    }
+    if (redisData.getType() != REDIS_SET) {
+      throw new 
RedisDataTypeMismatchException(RedisConstants.ERROR_WRONG_TYPE);
+    }
+    return (RedisSet) redisData;
   }
+
 }
diff --git 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/SAddExecutor.java
 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/SAddExecutor.java
index ea251da..0b86071 100755
--- 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/SAddExecutor.java
+++ 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/SAddExecutor.java
@@ -21,7 +21,6 @@ import org.apache.geode.redis.internal.ByteArrayWrapper;
 import org.apache.geode.redis.internal.Coder;
 import org.apache.geode.redis.internal.Command;
 import org.apache.geode.redis.internal.ExecutionHandlerContext;
-import org.apache.geode.redis.internal.RedisDataType;
 
 public class SAddExecutor extends SetExecutor {
 
@@ -30,11 +29,8 @@ public class SAddExecutor extends SetExecutor {
 
     List<ByteArrayWrapper> commandElements = 
command.getProcessedCommandWrappers();
 
-    // Save key
-    context.getKeyRegistrar().register(command.getKey(), 
RedisDataType.REDIS_SET);
-
     RedisSetCommands redisSetCommands =
-        new 
RedisSetCommandsFunctionExecutor(context.getRegionProvider().getSetRegion());
+        new 
RedisSetCommandsFunctionExecutor(context.getRegionProvider().getDataRegion());
 
     ArrayList<ByteArrayWrapper> membersToAdd =
         new ArrayList<>(commandElements.subList(2, commandElements.size()));
diff --git 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/SCardExecutor.java
 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/SCardExecutor.java
index b3d587c..f5c313b 100755
--- 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/SCardExecutor.java
+++ 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/SCardExecutor.java
@@ -28,7 +28,7 @@ public class SCardExecutor extends SetExecutor {
     ByteArrayWrapper key = command.getKey();
     checkDataType(key, RedisDataType.REDIS_SET, context);
     RedisSetCommands redisSetCommands =
-        new 
RedisSetCommandsFunctionExecutor(context.getRegionProvider().getSetRegion());
+        new 
RedisSetCommandsFunctionExecutor(context.getRegionProvider().getDataRegion());
     int size = redisSetCommands.scard(key);
     
command.setResponse(Coder.getIntegerResponse(context.getByteBufAllocator(), 
size));
   }
diff --git 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/SIsMemberExecutor.java
 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/SIsMemberExecutor.java
index bda26df..85819be 100755
--- 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/SIsMemberExecutor.java
+++ 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/SIsMemberExecutor.java
@@ -20,12 +20,10 @@ import org.apache.geode.redis.internal.ByteArrayWrapper;
 import org.apache.geode.redis.internal.Coder;
 import org.apache.geode.redis.internal.Command;
 import org.apache.geode.redis.internal.ExecutionHandlerContext;
-import org.apache.geode.redis.internal.RedisDataType;
 
 public class SIsMemberExecutor extends SetExecutor {
 
   private static final int EXISTS = 1;
-
   private static final int NOT_EXISTS = 0;
 
   @Override
@@ -33,21 +31,10 @@ public class SIsMemberExecutor extends SetExecutor {
     List<byte[]> commandElems = command.getProcessedCommand();
 
     ByteArrayWrapper key = command.getKey();
-    if (!context.getKeyRegistrar().isRegistered(key)) {
-      
command.setResponse(Coder.getIntegerResponse(context.getByteBufAllocator(), 
NOT_EXISTS));
-      return;
-    }
-
     ByteArrayWrapper member = new ByteArrayWrapper(commandElems.get(2));
     RedisSetCommands redisSetCommands =
-        new 
RedisSetCommandsFunctionExecutor(context.getRegionProvider().getSetRegion());
-    boolean isMember = redisSetCommands.sismember(key, member);
-    if (isMember) {
-      
command.setResponse(Coder.getIntegerResponse(context.getByteBufAllocator(), 
EXISTS));
-      // save key for next quick lookup
-      context.getKeyRegistrar().register(key, RedisDataType.REDIS_SET);
-    } else {
-      
command.setResponse(Coder.getIntegerResponse(context.getByteBufAllocator(), 
NOT_EXISTS));
-    }
+        new 
RedisSetCommandsFunctionExecutor(context.getRegionProvider().getDataRegion());
+    int result = redisSetCommands.sismember(key, member) ? EXISTS : NOT_EXISTS;
+    
command.setResponse(Coder.getIntegerResponse(context.getByteBufAllocator(), 
result));
   }
 }
diff --git 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/SMembersExecutor.java
 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/SMembersExecutor.java
index b7089da..10b909b 100755
--- 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/SMembersExecutor.java
+++ 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/SMembersExecutor.java
@@ -22,17 +22,14 @@ import org.apache.geode.redis.internal.CoderException;
 import org.apache.geode.redis.internal.Command;
 import org.apache.geode.redis.internal.ExecutionHandlerContext;
 import org.apache.geode.redis.internal.RedisConstants;
-import org.apache.geode.redis.internal.RedisDataType;
 
 public class SMembersExecutor extends SetExecutor {
 
   @Override
   public void executeCommand(Command command, ExecutionHandlerContext context) 
{
     ByteArrayWrapper key = command.getKey();
-    checkDataType(key, RedisDataType.REDIS_SET, context);
-
     RedisSetCommands redisSetCommands =
-        new 
RedisSetCommandsFunctionExecutor(context.getRegionProvider().getSetRegion());
+        new 
RedisSetCommandsFunctionExecutor(context.getRegionProvider().getDataRegion());
     Set<ByteArrayWrapper> members = redisSetCommands.smembers(key);
 
     try {
diff --git 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/SMoveExecutor.java
 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/SMoveExecutor.java
index 3539cfc..4da5317 100755
--- 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/SMoveExecutor.java
+++ 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/SMoveExecutor.java
@@ -25,6 +25,7 @@ import org.apache.geode.redis.internal.ByteArrayWrapper;
 import org.apache.geode.redis.internal.Coder;
 import org.apache.geode.redis.internal.Command;
 import org.apache.geode.redis.internal.ExecutionHandlerContext;
+import org.apache.geode.redis.internal.RedisData;
 import org.apache.geode.redis.internal.RedisDataType;
 
 public class SMoveExecutor extends SetExecutor {
@@ -44,10 +45,10 @@ public class SMoveExecutor extends SetExecutor {
     checkDataType(source, RedisDataType.REDIS_SET, context);
     checkDataType(destination, RedisDataType.REDIS_SET, context);
 
-    Region<ByteArrayWrapper, RedisSet> region = getRegion(context);
+    Region<ByteArrayWrapper, RedisData> region = getRegion(context);
 
     try (AutoCloseableLock regionLock = withRegionLock(context, source)) {
-      RedisSet sourceSet = region.get(source);
+      RedisData sourceSet = region.get(source);
 
       if (sourceSet == null) {
         
command.setResponse(Coder.getIntegerResponse(context.getByteBufAllocator(), 
NOT_MOVED));
@@ -56,9 +57,7 @@ public class SMoveExecutor extends SetExecutor {
 
       boolean removed =
           new RedisSetInRegion(region).srem(source,
-              new ArrayList<>(Collections.singletonList(member)),
-              null) == 1;
-      // TODO: native redis SMOVE that empties the src set causes it to no 
longer exist
+              new ArrayList<>(Collections.singletonList(member))) == 1;
 
       if (!removed) {
         
command.setResponse(Coder.getIntegerResponse(context.getByteBufAllocator(), 
NOT_MOVED));
@@ -67,8 +66,6 @@ public class SMoveExecutor extends SetExecutor {
           // TODO: this should invoke a function in case the primary for 
destination is remote
           new RedisSetInRegion(region).sadd(destination,
               new ArrayList<>(Collections.singletonList(member)));
-          context.getKeyRegistrar().register(destination, 
RedisDataType.REDIS_SET);
-          context.getKeyRegistrar().register(source, RedisDataType.REDIS_SET);
 
           
command.setResponse(Coder.getIntegerResponse(context.getByteBufAllocator(), 
MOVED));
         } catch (InterruptedException e) {
diff --git 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/SPopExecutor.java
 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/SPopExecutor.java
index d3f0ce2..a05777d 100755
--- 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/SPopExecutor.java
+++ 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/SPopExecutor.java
@@ -36,7 +36,7 @@ public class SPopExecutor extends SetExecutor {
 
     ByteArrayWrapper key = command.getKey();
     RedisSetCommands redisSetCommands =
-        new 
RedisSetCommandsFunctionExecutor(context.getRegionProvider().getSetRegion());
+        new 
RedisSetCommandsFunctionExecutor(context.getRegionProvider().getDataRegion());
     Collection<ByteArrayWrapper> popped = redisSetCommands.spop(key, popCount);
     if (popped.isEmpty()) {
       command.setResponse(Coder.getNilResponse(context.getByteBufAllocator()));
diff --git 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/SRandMemberExecutor.java
 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/SRandMemberExecutor.java
index 73180a8..bc4fbbd 100755
--- 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/SRandMemberExecutor.java
+++ 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/SRandMemberExecutor.java
@@ -54,7 +54,7 @@ public class SRandMemberExecutor extends SetExecutor {
     }
 
     RedisSetCommands redisSetCommands =
-        new 
RedisSetCommandsFunctionExecutor(context.getRegionProvider().getSetRegion());
+        new 
RedisSetCommandsFunctionExecutor(context.getRegionProvider().getDataRegion());
     Collection<ByteArrayWrapper> results = redisSetCommands.srandmember(key, 
count);
     try {
       if (results.isEmpty()) {
diff --git 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/SRemExecutor.java
 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/SRemExecutor.java
index 48b6a75..de7882f 100755
--- 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/SRemExecutor.java
+++ 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/SRemExecutor.java
@@ -16,13 +16,11 @@ package org.apache.geode.redis.internal.executor.set;
 
 import java.util.ArrayList;
 import java.util.List;
-import java.util.concurrent.atomic.AtomicBoolean;
 
 import org.apache.geode.redis.internal.ByteArrayWrapper;
 import org.apache.geode.redis.internal.Coder;
 import org.apache.geode.redis.internal.Command;
 import org.apache.geode.redis.internal.ExecutionHandlerContext;
-import org.apache.geode.redis.internal.RedisDataType;
 
 public class SRemExecutor extends SetExecutor {
   @Override
@@ -31,30 +29,18 @@ public class SRemExecutor extends SetExecutor {
 
     ByteArrayWrapper key = command.getKey();
 
-    checkDataType(key, RedisDataType.REDIS_SET, context);
-
     RedisSetCommands redisSetCommands =
-        new 
RedisSetCommandsFunctionExecutor(context.getRegionProvider().getSetRegion());
+        new 
RedisSetCommandsFunctionExecutor(context.getRegionProvider().getDataRegion());
 
     ArrayList<ByteArrayWrapper> membersToRemove =
         new ArrayList<>(
             commandElements
                 .subList(2, commandElements.size()));
 
-    AtomicBoolean setWasDeleted = new AtomicBoolean();
-
     long membersRemoved =
         redisSetCommands.srem(
             key,
-            membersToRemove,
-            setWasDeleted);
-    if (setWasDeleted.get()) {
-      context
-          .getKeyRegistrar()
-          .unregisterIfType(
-              key,
-              RedisDataType.REDIS_SET);
-    }
+            membersToRemove);
 
     
command.setResponse(Coder.getIntegerResponse(context.getByteBufAllocator(), 
membersRemoved));
   }
diff --git 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/SScanExecutor.java
 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/SScanExecutor.java
index 11b0e38..ef2a7e8 100755
--- 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/SScanExecutor.java
+++ 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/SScanExecutor.java
@@ -98,7 +98,7 @@ public class SScanExecutor extends AbstractScanExecutor {
     }
 
     RedisSetCommands redisSetCommands =
-        new 
RedisSetCommandsFunctionExecutor(context.getRegionProvider().getSetRegion());
+        new 
RedisSetCommandsFunctionExecutor(context.getRegionProvider().getDataRegion());
     List<Object> returnList = redisSetCommands.sscan(key, matchPattern, count, 
cursor);
     command.setResponse(Coder.getScanResponse(context.getByteBufAllocator(), 
returnList));
   }
diff --git 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/SetExecutor.java
 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/SetExecutor.java
index c5c247c..e6ec430 100755
--- 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/SetExecutor.java
+++ 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/SetExecutor.java
@@ -20,6 +20,7 @@ import org.apache.geode.cache.TimeoutException;
 import org.apache.geode.redis.internal.AutoCloseableLock;
 import org.apache.geode.redis.internal.ByteArrayWrapper;
 import org.apache.geode.redis.internal.ExecutionHandlerContext;
+import org.apache.geode.redis.internal.RedisData;
 import org.apache.geode.redis.internal.RedisLockService;
 import org.apache.geode.redis.internal.executor.AbstractExecutor;
 
@@ -31,12 +32,12 @@ public abstract class SetExecutor extends AbstractExecutor {
    * @param context the execution handler
    * @return the set Region
    */
-  Region<ByteArrayWrapper, RedisSet> getRegion(
+  Region<ByteArrayWrapper, RedisData> getRegion(
       ExecutionHandlerContext context) {
 
     return context
         .getRegionProvider()
-        .getSetRegion();
+        .getDataRegion();
   }
 
   protected AutoCloseableLock withRegionLock(
diff --git 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/SetOpExecutor.java
 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/SetOpExecutor.java
index 32a76fc..b6928fd 100755
--- 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/SetOpExecutor.java
+++ 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/SetOpExecutor.java
@@ -26,7 +26,7 @@ import org.apache.geode.redis.internal.ByteArrayWrapper;
 import org.apache.geode.redis.internal.Coder;
 import org.apache.geode.redis.internal.Command;
 import org.apache.geode.redis.internal.ExecutionHandlerContext;
-import org.apache.geode.redis.internal.RedisDataType;
+import org.apache.geode.redis.internal.RedisData;
 import org.apache.geode.redis.internal.RegionProvider;
 
 public abstract class SetOpExecutor extends SetExecutor {
@@ -65,7 +65,7 @@ public abstract class SetOpExecutor extends SetExecutor {
       List<byte[]> commandElems, int setsStartIndex,
       RegionProvider regionProvider, ByteArrayWrapper destination,
       ByteArrayWrapper firstSetKey) {
-    Region<ByteArrayWrapper, RedisSet> region = this.getRegion(context);
+    Region<ByteArrayWrapper, RedisData> region = this.getRegion(context);
     Set<ByteArrayWrapper> firstSet = new 
RedisSetInRegion(region).smembers(firstSetKey);
 
     List<Set<ByteArrayWrapper>> setList = new ArrayList<>();
@@ -91,7 +91,6 @@ public abstract class SetOpExecutor extends SetExecutor {
       if (resultSet != null) {
         if (!resultSet.isEmpty()) {
           region.put(destination, new RedisSet(resultSet));
-          context.getKeyRegistrar().register(destination, 
RedisDataType.REDIS_SET);
         }
         command
             .setResponse(
diff --git 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/SynchronizedStripedExecutor.java
 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/SynchronizedStripedExecutor.java
index a1a48d9..f45eb39 100644
--- 
a/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/SynchronizedStripedExecutor.java
+++ 
b/geode-redis/src/main/java/org/apache/geode/redis/internal/executor/set/SynchronizedStripedExecutor.java
@@ -45,6 +45,8 @@ public class SynchronizedStripedExecutor implements 
StripedExecutor {
     synchronized (getSync(stripeId)) {
       try {
         return callable.call();
+      } catch (RuntimeException re) {
+        throw re;
       } catch (Exception e) {
         throw new RuntimeException(e);
       }
diff --git 
a/geode-redis/src/test/java/org/apache/geode/redis/internal/RegionProviderJUnitTest.java
 
b/geode-redis/src/test/java/org/apache/geode/redis/internal/RegionProviderJUnitTest.java
index 2d6157e..7561fc8 100644
--- 
a/geode-redis/src/test/java/org/apache/geode/redis/internal/RegionProviderJUnitTest.java
+++ 
b/geode-redis/src/test/java/org/apache/geode/redis/internal/RegionProviderJUnitTest.java
@@ -29,8 +29,6 @@ import org.apache.geode.cache.Cache;
 import org.apache.geode.cache.Region;
 import org.apache.geode.cache.RegionShortcut;
 import org.apache.geode.internal.hll.HyperLogLogPlus;
-import org.apache.geode.redis.internal.executor.hash.RedisHash;
-import org.apache.geode.redis.internal.executor.set.RedisSet;
 
 
 /**
@@ -46,8 +44,7 @@ public class RegionProviderJUnitTest {
 
   private ExecutionHandlerContext context;
 
-  private Region<ByteArrayWrapper, RedisHash> hashRegion;
-  private Region<ByteArrayWrapper, RedisSet> setRegion;
+  private Region<ByteArrayWrapper, RedisData> dataRegion;
 
   /**
    * Setup data, objects mocks for the test case
@@ -66,16 +63,14 @@ public class RegionProviderJUnitTest {
     Cache cache = Mockito.mock(Cache.class);
     Region<Object, Object> newRegion = org.mockito.Mockito.mock(Region.class);
 
-    setRegion = Mockito.mock(Region.class);
+    dataRegion = Mockito.mock(Region.class);
 
     Mockito.when(cache.getRegion(NEW_REGION_NM)).thenReturn(newRegion);
 
     RegionShortcut defaultShortcut = RegionShortcut.PARTITION;
 
-    hashRegion = Mockito.mock(Region.class);
-
     regionProvider = new RegionProvider(stringsRegion, hLLRegion, 
keyRegistrar, expirationsMap,
-        expirationExecutor, defaultShortcut, hashRegion, setRegion, cache);
+        expirationExecutor, defaultShortcut, dataRegion, cache);
     context = Mockito.mock(ExecutionHandlerContext.class);
 
   }
diff --git 
a/geode-redis/src/test/java/org/apache/geode/redis/internal/executor/AbstractExecutorJUnitTest.java
 
b/geode-redis/src/test/java/org/apache/geode/redis/internal/executor/AbstractExecutorJUnitTest.java
index 15a9c4f..ef2cca6 100644
--- 
a/geode-redis/src/test/java/org/apache/geode/redis/internal/executor/AbstractExecutorJUnitTest.java
+++ 
b/geode-redis/src/test/java/org/apache/geode/redis/internal/executor/AbstractExecutorJUnitTest.java
@@ -26,16 +26,8 @@ import org.apache.geode.redis.internal.RedisDataType;
 import org.apache.geode.redis.internal.RegionProvider;
 import org.apache.geode.redis.internal.executor.string.SetExecutor;
 
-/**
- * Test for AbstractExecutor
- *
- *
- */
 public class AbstractExecutorJUnitTest {
 
-  /**
-   * Test the remove entry mehtod
-   */
   @Test
   public void testRemoveEntry() {
     // Create any instance of the AbstractExecutor

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