Updated Branches:
  refs/heads/trunk 14da6bca0 -> 3205e5dbb

http://git-wip-us.apache.org/repos/asf/cassandra/blob/3205e5db/test/unit/org/apache/cassandra/db/RowIterationTest.java
----------------------------------------------------------------------
diff --git a/test/unit/org/apache/cassandra/db/RowIterationTest.java 
b/test/unit/org/apache/cassandra/db/RowIterationTest.java
index 084be2d..c083b19 100644
--- a/test/unit/org/apache/cassandra/db/RowIterationTest.java
+++ b/test/unit/org/apache/cassandra/db/RowIterationTest.java
@@ -85,7 +85,7 @@ public class RowIterationTest extends SchemaLoader
         rm.apply();
         store.forceBlockingFlush();
 
-        ColumnFamily cf = Util.getRangeSlice(store).get(0).cf;
+        ColumnFamily cf = Util.getRangeSlice(store).iterator().next().cf;
         assert cf.deletionInfo().equals(delInfo2);
     }
 

http://git-wip-us.apache.org/repos/asf/cassandra/blob/3205e5db/tools/stress/src/org/apache/cassandra/stress/Session.java
----------------------------------------------------------------------
diff --git a/tools/stress/src/org/apache/cassandra/stress/Session.java 
b/tools/stress/src/org/apache/cassandra/stress/Session.java
index 5897552..49449eb 100644
--- a/tools/stress/src/org/apache/cassandra/stress/Session.java
+++ b/tools/stress/src/org/apache/cassandra/stress/Session.java
@@ -17,24 +17,17 @@
  */
 package org.apache.cassandra.stress;
 
-import java.io.BufferedReader;
-import java.io.FileInputStream;
-import java.io.FileNotFoundException;
-import java.io.FileOutputStream;
-import java.io.IOException;
-import java.io.InputStreamReader;
-import java.io.PrintStream;
-import java.io.Serializable;
+import java.io.*;
 import java.net.InetAddress;
 import java.net.UnknownHostException;
 import java.nio.ByteBuffer;
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
+import java.util.*;
 import java.util.concurrent.atomic.AtomicInteger;
 
+import org.apache.commons.cli.*;
+import org.apache.commons.lang3.StringUtils;
+
+import com.yammer.metrics.Metrics;
 import org.apache.cassandra.cli.transport.FramedTransportFactory;
 import org.apache.cassandra.config.CFMetaData;
 import org.apache.cassandra.config.EncryptionOptions;
@@ -43,18 +36,14 @@ import org.apache.cassandra.db.ColumnFamilyType;
 import org.apache.cassandra.db.marshal.*;
 import org.apache.cassandra.exceptions.ConfigurationException;
 import org.apache.cassandra.exceptions.SyntaxException;
-import org.apache.cassandra.metrics.CassandraMetricRegistry;
 import org.apache.cassandra.stress.util.CassandraClient;
 import org.apache.cassandra.thrift.*;
 import org.apache.cassandra.transport.SimpleClient;
 import org.apache.cassandra.utils.ByteBufferUtil;
-import org.apache.commons.cli.*;
-import org.apache.commons.lang3.StringUtils;
 import org.apache.thrift.protocol.TBinaryProtocol;
 import org.apache.thrift.transport.TSocket;
 import org.apache.thrift.transport.TTransport;
 import org.apache.thrift.transport.TTransportFactory;
-import com.codahale.metrics.MetricRegistry;
 
 public class Session implements Serializable
 {
@@ -69,7 +58,7 @@ public class Session implements Serializable
 
     public final AtomicInteger operations = new AtomicInteger();
     public final AtomicInteger keys = new AtomicInteger();
-    public final com.codahale.metrics.Timer latency = 
CassandraMetricRegistry.get().timer(MetricRegistry.name(Session.class, 
"latency"));
+    public final com.yammer.metrics.core.Timer latency = 
Metrics.newTimer(Session.class, "latency");
 
     private static final String SSL_TRUSTSTORE = "truststore";
     private static final String SSL_TRUSTSTORE_PW = "truststore-password";

http://git-wip-us.apache.org/repos/asf/cassandra/blob/3205e5db/tools/stress/src/org/apache/cassandra/stress/StressAction.java
----------------------------------------------------------------------
diff --git a/tools/stress/src/org/apache/cassandra/stress/StressAction.java 
b/tools/stress/src/org/apache/cassandra/stress/StressAction.java
index 4c7489a..46005a1 100644
--- a/tools/stress/src/org/apache/cassandra/stress/StressAction.java
+++ b/tools/stress/src/org/apache/cassandra/stress/StressAction.java
@@ -24,7 +24,7 @@ import java.util.concurrent.TimeUnit;
 
 import com.google.common.util.concurrent.Uninterruptibles;
 import com.google.common.util.concurrent.RateLimiter;
-import com.codahale.metrics.Snapshot;
+import com.yammer.metrics.stats.Snapshot;
 import org.apache.cassandra.stress.operations.*;
 import org.apache.cassandra.stress.util.CassandraClient;
 import org.apache.cassandra.stress.util.Operation;

http://git-wip-us.apache.org/repos/asf/cassandra/blob/3205e5db/tools/stress/src/org/apache/cassandra/stress/StressStatistics.java
----------------------------------------------------------------------
diff --git a/tools/stress/src/org/apache/cassandra/stress/StressStatistics.java 
b/tools/stress/src/org/apache/cassandra/stress/StressStatistics.java
index 3981180..2f7d72d 100644
--- a/tools/stress/src/org/apache/cassandra/stress/StressStatistics.java
+++ b/tools/stress/src/org/apache/cassandra/stress/StressStatistics.java
@@ -22,7 +22,8 @@ import java.io.PrintStream;
 
 import org.apache.commons.lang3.time.DurationFormatUtils;
 
-import com.codahale.metrics.Snapshot;
+import com.yammer.metrics.stats.Snapshot;
+
 
 /**
  * Gathers and aggregates statistics for an operation

http://git-wip-us.apache.org/repos/asf/cassandra/blob/3205e5db/tools/stress/src/org/apache/cassandra/stress/operations/CounterAdder.java
----------------------------------------------------------------------
diff --git 
a/tools/stress/src/org/apache/cassandra/stress/operations/CounterAdder.java 
b/tools/stress/src/org/apache/cassandra/stress/operations/CounterAdder.java
index 39c2586..ab6ae9d 100644
--- a/tools/stress/src/org/apache/cassandra/stress/operations/CounterAdder.java
+++ b/tools/stress/src/org/apache/cassandra/stress/operations/CounterAdder.java
@@ -17,7 +17,7 @@
  */
 package org.apache.cassandra.stress.operations;
 
-import com.codahale.metrics.Timer.Context;
+import com.yammer.metrics.core.TimerContext;
 import org.apache.cassandra.stress.Session;
 import org.apache.cassandra.stress.util.CassandraClient;
 import org.apache.cassandra.stress.util.Operation;
@@ -71,7 +71,7 @@ public class CounterAdder extends Operation
                                                                                
 ? getSuperColumnsMutationMap(superColumns)
                                                                                
 : getColumnsMutationMap(columns));
 
-        Context context = session.latency.time();
+        TimerContext context = session.latency.time();
 
         boolean success = false;
         String exceptionMessage = null;

http://git-wip-us.apache.org/repos/asf/cassandra/blob/3205e5db/tools/stress/src/org/apache/cassandra/stress/operations/CounterGetter.java
----------------------------------------------------------------------
diff --git 
a/tools/stress/src/org/apache/cassandra/stress/operations/CounterGetter.java 
b/tools/stress/src/org/apache/cassandra/stress/operations/CounterGetter.java
index 2980df9..56ef243 100644
--- a/tools/stress/src/org/apache/cassandra/stress/operations/CounterGetter.java
+++ b/tools/stress/src/org/apache/cassandra/stress/operations/CounterGetter.java
@@ -17,21 +17,16 @@
  */
 package org.apache.cassandra.stress.operations;
 
-import java.io.IOException;
-import java.nio.ByteBuffer;
-import java.util.List;
-
-import com.codahale.metrics.Timer.Context;
-
-import org.apache.cassandra.db.ColumnFamilyType;
+import com.yammer.metrics.core.TimerContext;
 import org.apache.cassandra.stress.Session;
 import org.apache.cassandra.stress.util.CassandraClient;
 import org.apache.cassandra.stress.util.Operation;
-import org.apache.cassandra.thrift.Cassandra;
-import org.apache.cassandra.thrift.ColumnOrSuperColumn;
-import org.apache.cassandra.thrift.ColumnParent;
-import org.apache.cassandra.thrift.SlicePredicate;
-import org.apache.cassandra.thrift.SliceRange;
+import org.apache.cassandra.db.ColumnFamilyType;
+import org.apache.cassandra.thrift.*;
+
+import java.io.IOException;
+import java.nio.ByteBuffer;
+import java.util.List;
 
 public class CounterGetter extends Operation
 {
@@ -73,7 +68,7 @@ public class CounterGetter extends Operation
             String superColumn = 'S' + Integer.toString(j);
             ColumnParent parent = new 
ColumnParent("SuperCounter1").setSuper_column(superColumn.getBytes());
 
-            Context context = session.latency.time();
+            TimerContext context = session.latency.time();
 
             boolean success = false;
             String exceptionMessage = null;
@@ -118,7 +113,7 @@ public class CounterGetter extends Operation
         byte[] key = generateKey();
         ByteBuffer keyBuffer = ByteBuffer.wrap(key);
 
-        Context context = session.latency.time();
+        TimerContext context = session.latency.time();
 
         boolean success = false;
         String exceptionMessage = null;

http://git-wip-us.apache.org/repos/asf/cassandra/blob/3205e5db/tools/stress/src/org/apache/cassandra/stress/operations/CqlCounterAdder.java
----------------------------------------------------------------------
diff --git 
a/tools/stress/src/org/apache/cassandra/stress/operations/CqlCounterAdder.java 
b/tools/stress/src/org/apache/cassandra/stress/operations/CqlCounterAdder.java
index 3569af5..31e8371 100644
--- 
a/tools/stress/src/org/apache/cassandra/stress/operations/CqlCounterAdder.java
+++ 
b/tools/stress/src/org/apache/cassandra/stress/operations/CqlCounterAdder.java
@@ -26,7 +26,7 @@ import java.nio.ByteBuffer;
 import java.util.Collections;
 import java.util.List;
 
-import com.codahale.metrics.Timer.Context;
+import com.yammer.metrics.core.TimerContext;
 import org.apache.cassandra.db.ColumnFamilyType;
 import org.apache.cassandra.stress.Session;
 import org.apache.cassandra.stress.util.CassandraClient;
@@ -75,7 +75,7 @@ public class CqlCounterAdder extends CQLOperation
         String key = String.format("%0" + session.getTotalKeysLength() + "d", 
index);
         List<String> queryParams = 
Collections.singletonList(getUnQuotedCqlBlob(key, 
session.cqlVersion.startsWith("3")));
 
-        Context context = session.latency.time();
+        TimerContext context = session.latency.time();
 
         boolean success = false;
         String exceptionMessage = null;

http://git-wip-us.apache.org/repos/asf/cassandra/blob/3205e5db/tools/stress/src/org/apache/cassandra/stress/operations/CqlCounterGetter.java
----------------------------------------------------------------------
diff --git 
a/tools/stress/src/org/apache/cassandra/stress/operations/CqlCounterGetter.java 
b/tools/stress/src/org/apache/cassandra/stress/operations/CqlCounterGetter.java
index 0a1dfdf..a4d037a 100644
--- 
a/tools/stress/src/org/apache/cassandra/stress/operations/CqlCounterGetter.java
+++ 
b/tools/stress/src/org/apache/cassandra/stress/operations/CqlCounterGetter.java
@@ -26,7 +26,7 @@ import java.nio.ByteBuffer;
 import java.util.Collections;
 import java.util.List;
 
-import com.codahale.metrics.Timer.Context;
+import com.yammer.metrics.core.TimerContext;
 import org.apache.cassandra.db.ColumnFamilyType;
 import org.apache.cassandra.stress.Session;
 import org.apache.cassandra.stress.util.CassandraClient;
@@ -73,7 +73,7 @@ public class CqlCounterGetter extends CQLOperation
         byte[] key = generateKey();
         List<String> queryParams = 
Collections.singletonList(getUnQuotedCqlBlob(key, 
session.cqlVersion.startsWith("3")));
 
-        Context context = session.latency.time();
+        TimerContext context = session.latency.time();
 
         boolean success = false;
         String exceptionMessage = null;

http://git-wip-us.apache.org/repos/asf/cassandra/blob/3205e5db/tools/stress/src/org/apache/cassandra/stress/operations/CqlIndexedRangeSlicer.java
----------------------------------------------------------------------
diff --git 
a/tools/stress/src/org/apache/cassandra/stress/operations/CqlIndexedRangeSlicer.java
 
b/tools/stress/src/org/apache/cassandra/stress/operations/CqlIndexedRangeSlicer.java
index 52fe73f..bf416cc 100644
--- 
a/tools/stress/src/org/apache/cassandra/stress/operations/CqlIndexedRangeSlicer.java
+++ 
b/tools/stress/src/org/apache/cassandra/stress/operations/CqlIndexedRangeSlicer.java
@@ -26,7 +26,7 @@ import java.nio.ByteBuffer;
 import java.util.Collections;
 import java.util.List;
 
-import com.codahale.metrics.Timer.Context;
+import com.yammer.metrics.core.TimerContext;
 import org.apache.cassandra.cql3.ResultSet;
 import org.apache.cassandra.db.ColumnFamilyType;
 import org.apache.cassandra.stress.Session;
@@ -86,7 +86,7 @@ public class CqlIndexedRangeSlicer extends CQLOperation
 
         while (received < expectedPerValue)
         {
-            Context context = session.latency.time();
+            TimerContext context = session.latency.time();
 
             boolean success = false;
             String exceptionMessage = null;

http://git-wip-us.apache.org/repos/asf/cassandra/blob/3205e5db/tools/stress/src/org/apache/cassandra/stress/operations/CqlInserter.java
----------------------------------------------------------------------
diff --git 
a/tools/stress/src/org/apache/cassandra/stress/operations/CqlInserter.java 
b/tools/stress/src/org/apache/cassandra/stress/operations/CqlInserter.java
index 10d060e..3572c36 100644
--- a/tools/stress/src/org/apache/cassandra/stress/operations/CqlInserter.java
+++ b/tools/stress/src/org/apache/cassandra/stress/operations/CqlInserter.java
@@ -26,7 +26,7 @@ import java.nio.ByteBuffer;
 import java.util.ArrayList;
 import java.util.List;
 
-import com.codahale.metrics.Timer.Context;
+import com.yammer.metrics.core.TimerContext;
 import org.apache.cassandra.db.ColumnFamilyType;
 import org.apache.cassandra.stress.Session;
 import org.apache.cassandra.stress.util.CassandraClient;
@@ -98,7 +98,7 @@ public class CqlInserter extends CQLOperation
         String key = String.format("%0" + session.getTotalKeysLength() + "d", 
index);
         queryParms.add(getUnQuotedCqlBlob(key, 
session.cqlVersion.startsWith("3")));
 
-        Context context = session.latency.time();
+        TimerContext context = session.latency.time();
 
         boolean success = false;
         String exceptionMessage = null;

http://git-wip-us.apache.org/repos/asf/cassandra/blob/3205e5db/tools/stress/src/org/apache/cassandra/stress/operations/CqlRangeSlicer.java
----------------------------------------------------------------------
diff --git 
a/tools/stress/src/org/apache/cassandra/stress/operations/CqlRangeSlicer.java 
b/tools/stress/src/org/apache/cassandra/stress/operations/CqlRangeSlicer.java
index d1329bf..c01767b 100644
--- 
a/tools/stress/src/org/apache/cassandra/stress/operations/CqlRangeSlicer.java
+++ 
b/tools/stress/src/org/apache/cassandra/stress/operations/CqlRangeSlicer.java
@@ -26,7 +26,7 @@ import java.nio.ByteBuffer;
 import java.util.Collections;
 import java.util.List;
 
-import com.codahale.metrics.Timer.Context;
+import com.yammer.metrics.core.TimerContext;
 import org.apache.cassandra.utils.ByteBufferUtil;
 
 import org.apache.cassandra.db.ColumnFamilyType;
@@ -67,7 +67,7 @@ public class CqlRangeSlicer extends CQLOperation
         String key = String.format("%0" +  session.getTotalKeysLength() + "d", 
index);
         List<String> queryParams = 
Collections.singletonList(getUnQuotedCqlBlob(key, 
session.cqlVersion.startsWith("3")));
 
-        Context context = session.latency.time();
+        TimerContext context = session.latency.time();
 
         boolean success = false;
         String exceptionMessage = null;

http://git-wip-us.apache.org/repos/asf/cassandra/blob/3205e5db/tools/stress/src/org/apache/cassandra/stress/operations/CqlReader.java
----------------------------------------------------------------------
diff --git 
a/tools/stress/src/org/apache/cassandra/stress/operations/CqlReader.java 
b/tools/stress/src/org/apache/cassandra/stress/operations/CqlReader.java
index c53535c..70273c1 100644
--- a/tools/stress/src/org/apache/cassandra/stress/operations/CqlReader.java
+++ b/tools/stress/src/org/apache/cassandra/stress/operations/CqlReader.java
@@ -26,7 +26,7 @@ import java.nio.ByteBuffer;
 import java.util.ArrayList;
 import java.util.List;
 
-import com.codahale.metrics.Timer.Context;
+import com.yammer.metrics.core.TimerContext;
 import org.apache.cassandra.db.ColumnFamilyType;
 import org.apache.cassandra.stress.Session;
 import org.apache.cassandra.stress.util.CassandraClient;
@@ -88,7 +88,7 @@ public class CqlReader extends CQLOperation
         byte[] key = generateKey();
         queryParams.add(getUnQuotedCqlBlob(key, 
session.cqlVersion.startsWith("3")));
 
-        Context context = session.latency.time();
+        TimerContext context = session.latency.time();
 
         boolean success = false;
         String exceptionMessage = null;

http://git-wip-us.apache.org/repos/asf/cassandra/blob/3205e5db/tools/stress/src/org/apache/cassandra/stress/operations/IndexedRangeSlicer.java
----------------------------------------------------------------------
diff --git 
a/tools/stress/src/org/apache/cassandra/stress/operations/IndexedRangeSlicer.java
 
b/tools/stress/src/org/apache/cassandra/stress/operations/IndexedRangeSlicer.java
index 44e915c..b7c72a2 100644
--- 
a/tools/stress/src/org/apache/cassandra/stress/operations/IndexedRangeSlicer.java
+++ 
b/tools/stress/src/org/apache/cassandra/stress/operations/IndexedRangeSlicer.java
@@ -17,7 +17,7 @@
  */
 package org.apache.cassandra.stress.operations;
 
-import com.codahale.metrics.Timer.Context;
+import com.yammer.metrics.core.TimerContext;
 import org.apache.cassandra.stress.Session;
 import org.apache.cassandra.stress.util.CassandraClient;
 import org.apache.cassandra.stress.util.Operation;
@@ -67,7 +67,7 @@ public class IndexedRangeSlicer extends Operation
                                                  session.getKeysPerCall());
 
             List<KeySlice> results = null;
-            Context context = session.latency.time();
+            TimerContext context = session.latency.time();
 
             boolean success = false;
             String exceptionMessage = null;

http://git-wip-us.apache.org/repos/asf/cassandra/blob/3205e5db/tools/stress/src/org/apache/cassandra/stress/operations/Inserter.java
----------------------------------------------------------------------
diff --git 
a/tools/stress/src/org/apache/cassandra/stress/operations/Inserter.java 
b/tools/stress/src/org/apache/cassandra/stress/operations/Inserter.java
index 35c7471..cbf6b98 100644
--- a/tools/stress/src/org/apache/cassandra/stress/operations/Inserter.java
+++ b/tools/stress/src/org/apache/cassandra/stress/operations/Inserter.java
@@ -17,7 +17,7 @@
  */
 package org.apache.cassandra.stress.operations;
 
-import com.codahale.metrics.Timer.Context;
+import com.yammer.metrics.core.TimerContext;
 import org.apache.cassandra.stress.Session;
 import org.apache.cassandra.stress.util.CassandraClient;
 import org.apache.cassandra.stress.util.Operation;
@@ -74,7 +74,7 @@ public class Inserter extends Operation
                                         : getColumnsMutationMap(columns);
         Map<ByteBuffer, Map<String, List<Mutation>>> record = 
Collections.singletonMap(ByteBufferUtil.bytes(rawKey), row);
 
-        Context context = session.latency.time();
+        TimerContext context = session.latency.time();
 
         boolean success = false;
         String exceptionMessage = null;

http://git-wip-us.apache.org/repos/asf/cassandra/blob/3205e5db/tools/stress/src/org/apache/cassandra/stress/operations/MultiGetter.java
----------------------------------------------------------------------
diff --git 
a/tools/stress/src/org/apache/cassandra/stress/operations/MultiGetter.java 
b/tools/stress/src/org/apache/cassandra/stress/operations/MultiGetter.java
index b0657f0..12a39fb 100644
--- a/tools/stress/src/org/apache/cassandra/stress/operations/MultiGetter.java
+++ b/tools/stress/src/org/apache/cassandra/stress/operations/MultiGetter.java
@@ -17,7 +17,7 @@
  */
 package org.apache.cassandra.stress.operations;
 
-import com.codahale.metrics.Timer.Context;
+import com.yammer.metrics.core.TimerContext;
 import org.apache.cassandra.stress.Session;
 import org.apache.cassandra.stress.util.CassandraClient;
 import org.apache.cassandra.stress.util.Operation;
@@ -56,7 +56,7 @@ public class MultiGetter extends Operation
             {
                 ColumnParent parent = new 
ColumnParent("Super1").setSuper_column(ByteBufferUtil.bytes("S" + j));
 
-                Context context = session.latency.time();
+                TimerContext context = session.latency.time();
 
                 boolean success = false;
                 String exceptionMessage = null;
@@ -99,7 +99,7 @@ public class MultiGetter extends Operation
 
             List<ByteBuffer> keys = generateKeys(offset, offset + 
session.getKeysPerCall());
 
-            Context context = session.latency.time();
+            TimerContext context = session.latency.time();
 
             boolean success = false;
             String exceptionMessage = null;

http://git-wip-us.apache.org/repos/asf/cassandra/blob/3205e5db/tools/stress/src/org/apache/cassandra/stress/operations/RangeSlicer.java
----------------------------------------------------------------------
diff --git 
a/tools/stress/src/org/apache/cassandra/stress/operations/RangeSlicer.java 
b/tools/stress/src/org/apache/cassandra/stress/operations/RangeSlicer.java
index d1b52b4..f9ba115 100644
--- a/tools/stress/src/org/apache/cassandra/stress/operations/RangeSlicer.java
+++ b/tools/stress/src/org/apache/cassandra/stress/operations/RangeSlicer.java
@@ -17,7 +17,7 @@
  */
 package org.apache.cassandra.stress.operations;
 
-import com.codahale.metrics.Timer.Context;
+import com.yammer.metrics.core.TimerContext;
 import org.apache.cassandra.stress.Session;
 import org.apache.cassandra.stress.util.CassandraClient;
 import org.apache.cassandra.stress.util.Operation;
@@ -62,7 +62,7 @@ public class RangeSlicer extends Operation
                 String superColumnName = "S" + Integer.toString(i);
                 ColumnParent parent = new 
ColumnParent("Super1").setSuper_column(ByteBufferUtil.bytes(superColumnName));
 
-                Context context = session.latency.time();
+                TimerContext context = session.latency.time();
 
                 boolean success = false;
                 String exceptionMessage = null;
@@ -105,7 +105,7 @@ public class RangeSlicer extends Operation
             List<KeySlice> slices = new ArrayList<KeySlice>();
             KeyRange range = new 
KeyRange(count).setStart_key(start).setEnd_key(ByteBufferUtil.EMPTY_BYTE_BUFFER);
 
-            Context context = session.latency.time();
+            TimerContext context = session.latency.time();
 
             boolean success = false;
             String exceptionMessage = null;

http://git-wip-us.apache.org/repos/asf/cassandra/blob/3205e5db/tools/stress/src/org/apache/cassandra/stress/operations/Reader.java
----------------------------------------------------------------------
diff --git 
a/tools/stress/src/org/apache/cassandra/stress/operations/Reader.java 
b/tools/stress/src/org/apache/cassandra/stress/operations/Reader.java
index e15241f..f75502a 100644
--- a/tools/stress/src/org/apache/cassandra/stress/operations/Reader.java
+++ b/tools/stress/src/org/apache/cassandra/stress/operations/Reader.java
@@ -17,7 +17,7 @@
  */
 package org.apache.cassandra.stress.operations;
 
-import com.codahale.metrics.Timer.Context;
+import com.yammer.metrics.core.TimerContext;
 import org.apache.cassandra.stress.Session;
 import org.apache.cassandra.stress.util.CassandraClient;
 import org.apache.cassandra.stress.util.Operation;
@@ -67,7 +67,7 @@ public class Reader extends Operation
             String superColumn = 'S' + Integer.toString(j);
             ColumnParent parent = new 
ColumnParent("Super1").setSuper_column(superColumn.getBytes(UTF_8));
 
-            Context context = session.latency.time();
+            TimerContext context = session.latency.time();
 
             boolean success = false;
             String exceptionMessage = null;
@@ -112,7 +112,7 @@ public class Reader extends Operation
         byte[] key = generateKey();
         ByteBuffer keyBuffer = ByteBuffer.wrap(key);
 
-        Context context = session.latency.time();
+        TimerContext context = session.latency.time();
 
         boolean success = false;
         String exceptionMessage = null;

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