This is an automated email from the ASF dual-hosted git repository.
elserj pushed a commit to branch branch-2
in repository https://gitbox.apache.org/repos/asf/hbase.git
The following commit(s) were added to refs/heads/branch-2 by this push:
new 5b58d11 HBASE-26147 Add a dry run mode to the balancer, where moves
are calculated but not actually executed
5b58d11 is described below
commit 5b58d11c91cbbc2f73e4252088c97df12a49ff87
Author: Josh Elser <jel...@cloudera.com>
AuthorDate: Wed Sep 1 21:47:53 2021 -0400
HBASE-26147 Add a dry run mode to the balancer, where moves are calculated
but not actually executed
Signed-off-by: Duo Zhang <zhang...@apache.org>
Signed-off-by: Josh Elser <els...@apache.org
---
.../java/org/apache/hadoop/hbase/client/Admin.java | 28 ++++-
.../org/apache/hadoop/hbase/client/AsyncAdmin.java | 22 +++-
.../hadoop/hbase/client/AsyncHBaseAdmin.java | 4 +-
.../apache/hadoop/hbase/client/BalanceRequest.java | 114 +++++++++++++++++++
.../hadoop/hbase/client/BalanceResponse.java | 126 +++++++++++++++++++++
.../org/apache/hadoop/hbase/client/HBaseAdmin.java | 69 +++++------
.../hadoop/hbase/client/RawAsyncHBaseAdmin.java | 14 +--
.../hadoop/hbase/shaded/protobuf/ProtobufUtil.java | 32 ++++++
.../hbase/shaded/protobuf/RequestConverter.java | 10 --
.../src/main/protobuf/Master.proto | 5 +-
.../apache/hadoop/hbase/rsgroup/RSGroupAdmin.java | 14 ++-
.../hadoop/hbase/rsgroup/RSGroupAdminClient.java | 12 +-
.../hadoop/hbase/rsgroup/RSGroupAdminEndpoint.java | 21 +++-
.../hadoop/hbase/rsgroup/RSGroupAdminServer.java | 29 +++--
.../hadoop/hbase/rsgroup/RSGroupProtobufUtil.java | 35 +++++-
hbase-rsgroup/src/main/protobuf/RSGroupAdmin.proto | 4 +
.../hadoop/hbase/rsgroup/TestRSGroupsBalance.java | 90 ++++++++++-----
.../hadoop/hbase/rsgroup/TestRSGroupsBase.java | 6 +-
.../hadoop/hbase/rsgroup/TestRSGroupsFallback.java | 4 +-
.../hbase/rsgroup/VerifyingRSGroupAdminClient.java | 6 +-
.../hadoop/hbase/coprocessor/MasterObserver.java | 16 ++-
.../org/apache/hadoop/hbase/master/HMaster.java | 54 +++++----
.../hadoop/hbase/master/MasterCoprocessorHost.java | 18 +--
.../hadoop/hbase/master/MasterRpcServices.java | 3 +-
.../hbase/security/access/AccessController.java | 3 +-
.../apache/hadoop/hbase/TestRegionRebalancing.java | 27 ++++-
.../client/TestAsyncTableGetMultiThreaded.java | 2 +-
.../hadoop/hbase/client/TestMultiParallel.java | 2 +-
.../hbase/client/TestSeparateClientZKCluster.java | 4 +-
.../hbase/coprocessor/TestMasterObserver.java | 13 ++-
.../hbase/master/TestMasterDryRunBalancer.java | 126 +++++++++++++++++++++
.../master/procedure/TestProcedurePriority.java | 3 +-
.../security/access/TestAccessController.java | 3 +-
.../access/TestWithDisabledAuthorization.java | 3 +-
hbase-shell/src/main/ruby/hbase/admin.rb | 7 +-
hbase-shell/src/main/ruby/hbase/balancer_utils.rb | 57 ++++++++++
hbase-shell/src/main/ruby/hbase/rsgroup_admin.rb | 7 +-
.../main/ruby/shell/commands/balance_rsgroup.rb | 22 +++-
.../src/main/ruby/shell/commands/balancer.rb | 33 +++---
hbase-shell/src/test/ruby/hbase/admin_test.rb | 8 +-
.../src/test/ruby/hbase/balancer_utils_test.rb | 78 +++++++++++++
.../src/test/ruby/shell/rsgroup_shell_test.rb | 2 +
.../hadoop/hbase/thrift2/client/ThriftAdmin.java | 7 ++
43 files changed, 943 insertions(+), 200 deletions(-)
diff --git
a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/Admin.java
b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/Admin.java
index fb61612..a3a5107 100644
--- a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/Admin.java
+++ b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/Admin.java
@@ -1251,7 +1251,20 @@ public interface Admin extends Abortable, Closeable {
* @return <code>true</code> if balancer ran, <code>false</code> otherwise.
* @throws IOException if a remote or network exception occurs
*/
- boolean balance() throws IOException;
+ default boolean balance() throws IOException {
+ return balance(BalanceRequest.defaultInstance())
+ .isBalancerRan();
+ }
+
+ /**
+ * Invoke the balancer with the given balance request. The BalanceRequest
defines how the
+ * balancer will run. See {@link BalanceRequest} for more details.
+ *
+ * @param request defines how the balancer should run
+ * @return {@link BalanceResponse} with details about the results of the
invocation.
+ * @throws IOException if a remote or network exception occurs
+ */
+ BalanceResponse balance(BalanceRequest request) throws IOException;
/**
* Invoke the balancer. Will run the balancer and if regions to move, it
will
@@ -1262,7 +1275,7 @@ public interface Admin extends Abortable, Closeable {
* @return <code>true</code> if balancer ran, <code>false</code> otherwise.
* @throws IOException if a remote or network exception occurs
* @deprecated Since 2.0.0. Will be removed in 3.0.0.
- * Use {@link #balance(boolean)} instead.
+ * Use {@link #balance(BalanceRequest)} instead.
*/
@Deprecated
default boolean balancer(boolean force) throws IOException {
@@ -1277,8 +1290,17 @@ public interface Admin extends Abortable, Closeable {
* @param force whether we should force balance even if there is region in
transition
* @return <code>true</code> if balancer ran, <code>false</code> otherwise.
* @throws IOException if a remote or network exception occurs
+ * @deprecated Since 2.5.0. Will be removed in 4.0.0.
+ * Use {@link #balance(BalanceRequest)} instead.
*/
- boolean balance(boolean force) throws IOException;
+ @Deprecated
+ default boolean balance(boolean force) throws IOException {
+ return balance(
+ BalanceRequest.newBuilder()
+ .setIgnoreRegionsInTransition(force)
+ .build()
+ ).isBalancerRan();
+ }
/**
* Query the current state of the balancer.
diff --git
a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/AsyncAdmin.java
b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/AsyncAdmin.java
index 6b8fda7..85d5455 100644
--- a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/AsyncAdmin.java
+++ b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/AsyncAdmin.java
@@ -1257,7 +1257,8 @@ public interface AsyncAdmin {
* {@link CompletableFuture}.
*/
default CompletableFuture<Boolean> balance() {
- return balance(false);
+ return balance(BalanceRequest.defaultInstance())
+ .thenApply(BalanceResponse::isBalancerRan);
}
/**
@@ -1267,8 +1268,25 @@ public interface AsyncAdmin {
* @param forcible whether we should force balance even if there is region
in transition.
* @return True if balancer ran, false otherwise. The return value will be
wrapped by a
* {@link CompletableFuture}.
+ * @deprecated Since 2.5.0. Will be removed in 4.0.0.
+ * Use {@link #balance(BalanceRequest)} instead.
+ */
+ default CompletableFuture<Boolean> balance(boolean forcible) {
+ return balance(
+ BalanceRequest.newBuilder()
+ .setIgnoreRegionsInTransition(forcible)
+ .build()
+ ).thenApply(BalanceResponse::isBalancerRan);
+ }
+
+ /**
+ * Invoke the balancer with the given balance request. The BalanceRequest
defines how the
+ * balancer will run. See {@link BalanceRequest} for more details.
+ *
+ * @param request defines how the balancer should run
+ * @return {@link BalanceResponse} with details about the results of the
invocation.
*/
- CompletableFuture<Boolean> balance(boolean forcible);
+ CompletableFuture<BalanceResponse> balance(BalanceRequest request);
/**
* Query the current state of the balancer.
diff --git
a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/AsyncHBaseAdmin.java
b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/AsyncHBaseAdmin.java
index c7b9897..db720f3 100644
---
a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/AsyncHBaseAdmin.java
+++
b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/AsyncHBaseAdmin.java
@@ -684,8 +684,8 @@ class AsyncHBaseAdmin implements AsyncAdmin {
}
@Override
- public CompletableFuture<Boolean> balance(boolean forcible) {
- return wrap(rawAdmin.balance(forcible));
+ public CompletableFuture<BalanceResponse> balance(BalanceRequest request) {
+ return wrap(rawAdmin.balance(request));
}
@Override
diff --git
a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/BalanceRequest.java
b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/BalanceRequest.java
new file mode 100644
index 0000000..e464410
--- /dev/null
+++
b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/BalanceRequest.java
@@ -0,0 +1,114 @@
+/*
+ *
+ * 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.hadoop.hbase.client;
+
+import org.apache.yetus.audience.InterfaceAudience;
+
+/**
+ * Encapsulates options for executing a run of the Balancer.
+ */
+@InterfaceAudience.Public
+public final class BalanceRequest {
+ private static final BalanceRequest DEFAULT =
BalanceRequest.newBuilder().build();
+
+ /**
+ * Builder for constructing a {@link BalanceRequest}
+ */
+ @InterfaceAudience.Public
+ public final static class Builder {
+ private boolean dryRun = false;
+ private boolean ignoreRegionsInTransition = false;
+
+ private Builder() {}
+
+ /**
+ * Creates a BalancerRequest which runs the balancer in dryRun mode.
+ * In this mode, the balancer will try to find a plan but WILL NOT
+ * execute any region moves or call any coprocessors.
+ *
+ * You can run in dryRun mode regardless of whether the balancer switch
+ * is enabled or disabled, but dryRun mode will not run over an existing
+ * request or chore.
+ *
+ * Dry run is useful for testing out new balance configs. See the logs
+ * on the active HMaster for the results of the dry run.
+ */
+ public Builder setDryRun(boolean dryRun) {
+ this.dryRun = dryRun;
+ return this;
+ }
+
+ /**
+ * Creates a BalancerRequest to cause the balancer to run even if there
+ * are regions in transition.
+ *
+ * WARNING: Advanced usage only, this could cause more issues than it
fixes.
+ */
+ public Builder setIgnoreRegionsInTransition(boolean
ignoreRegionsInTransition) {
+ this.ignoreRegionsInTransition = ignoreRegionsInTransition;
+ return this;
+ }
+
+ /**
+ * Build the {@link BalanceRequest}
+ */
+ public BalanceRequest build() {
+ return new BalanceRequest(dryRun, ignoreRegionsInTransition);
+ }
+ }
+
+ /**
+ * Create a builder to construct a custom {@link BalanceRequest}.
+ */
+ public static Builder newBuilder() {
+ return new Builder();
+ }
+
+ /**
+ * Get a BalanceRequest for a default run of the balancer. The default mode
executes
+ * any moves calculated and will not run if regions are already in
transition.
+ */
+ public static BalanceRequest defaultInstance() {
+ return DEFAULT;
+ }
+
+ private final boolean dryRun;
+ private final boolean ignoreRegionsInTransition;
+
+ private BalanceRequest(boolean dryRun, boolean ignoreRegionsInTransition) {
+ this.dryRun = dryRun;
+ this.ignoreRegionsInTransition = ignoreRegionsInTransition;
+ }
+
+ /**
+ * Returns true if the balancer should run in dry run mode, otherwise false.
In
+ * dry run mode, moves will be calculated but not executed.
+ */
+ public boolean isDryRun() {
+ return dryRun;
+ }
+
+ /**
+ * Returns true if the balancer should execute even if regions are in
transition, otherwise
+ * false. This is an advanced usage feature, as it can cause more issues
than it fixes.
+ */
+ public boolean isIgnoreRegionsInTransition() {
+ return ignoreRegionsInTransition;
+ }
+}
diff --git
a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/BalanceResponse.java
b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/BalanceResponse.java
new file mode 100644
index 0000000..0d8e84b
--- /dev/null
+++
b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/BalanceResponse.java
@@ -0,0 +1,126 @@
+/*
+ *
+ * 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.hadoop.hbase.client;
+
+import org.apache.yetus.audience.InterfaceAudience;
+
+/**
+ * Response returned from a balancer invocation
+ */
+@InterfaceAudience.Public
+public final class BalanceResponse {
+
+ /**
+ * Builds a {@link BalanceResponse} for returning results of a balance
invocation to callers
+ */
+ @InterfaceAudience.Public
+ public final static class Builder {
+ private boolean balancerRan;
+ private int movesCalculated;
+ private int movesExecuted;
+
+ private Builder() {}
+
+ /**
+ * Set true if the balancer ran, otherwise false. The balancer may not run
in some
+ * circumstances, such as if a balance is already running or there are
regions already
+ * in transition.
+ *
+ * @param balancerRan true if balancer ran, false otherwise
+ */
+ public Builder setBalancerRan(boolean balancerRan) {
+ this.balancerRan = balancerRan;
+ return this;
+ }
+
+ /**
+ * Set how many moves were calculated by the balancer. This will be zero
if the cluster is
+ * already balanced.
+ *
+ * @param movesCalculated moves calculated by the balance run
+ */
+ public Builder setMovesCalculated(int movesCalculated) {
+ this.movesCalculated = movesCalculated;
+ return this;
+ }
+
+ /**
+ * Set how many of the calculated moves were actually executed by the
balancer. This should be
+ * zero if the balancer is run with {@link BalanceRequest#isDryRun()}. It
may also not equal
+ * movesCalculated if the balancer ran out of time while executing the
moves.
+ *
+ * @param movesExecuted moves executed by the balance run
+ */
+ public Builder setMovesExecuted(int movesExecuted) {
+ this.movesExecuted = movesExecuted;
+ return this;
+ }
+
+ /**
+ * Build the {@link BalanceResponse}
+ */
+ public BalanceResponse build() {
+ return new BalanceResponse(balancerRan, movesCalculated, movesExecuted);
+ }
+ }
+
+ /**
+ * Creates a new {@link BalanceResponse.Builder}
+ */
+ public static Builder newBuilder() {
+ return new Builder();
+ }
+
+ private final boolean balancerRan;
+ private final int movesCalculated;
+ private final int movesExecuted;
+
+ private BalanceResponse(boolean balancerRan, int movesCalculated, int
movesExecuted) {
+ this.balancerRan = balancerRan;
+ this.movesCalculated = movesCalculated;
+ this.movesExecuted = movesExecuted;
+ }
+
+ /**
+ * Returns true if the balancer ran, otherwise false. The balancer may not
run for a
+ * variety of reasons, such as: another balance is running, there are
regions in
+ * transition, the cluster is in maintenance mode, etc.
+ */
+ public boolean isBalancerRan() {
+ return balancerRan;
+ }
+
+ /**
+ * The number of moves calculated by the balancer if {@link
#isBalancerRan()} is true. This will
+ * be zero if no better balance could be found.
+ */
+ public int getMovesCalculated() {
+ return movesCalculated;
+ }
+
+ /**
+ * The number of moves actually executed by the balancer if it ran. This
will be
+ * zero if {@link #getMovesCalculated()} is zero or if {@link
BalanceRequest#isDryRun()}
+ * was true. It may also not be equal to {@link #getMovesCalculated()} if
the balancer
+ * was interrupted midway through executing the moves due to max run time.
+ */
+ public int getMovesExecuted() {
+ return movesExecuted;
+ }
+}
diff --git
a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/HBaseAdmin.java
b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/HBaseAdmin.java
index b7ed2d0..0704d51 100644
--- a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/HBaseAdmin.java
+++ b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/HBaseAdmin.java
@@ -92,6 +92,25 @@ import
org.apache.hadoop.hbase.security.access.GetUserPermissionsRequest;
import org.apache.hadoop.hbase.security.access.Permission;
import org.apache.hadoop.hbase.security.access.ShadedAccessControlUtil;
import org.apache.hadoop.hbase.security.access.UserPermission;
+import org.apache.hadoop.hbase.snapshot.ClientSnapshotDescriptionUtils;
+import org.apache.hadoop.hbase.snapshot.HBaseSnapshotException;
+import org.apache.hadoop.hbase.snapshot.RestoreSnapshotException;
+import org.apache.hadoop.hbase.snapshot.SnapshotCreationException;
+import org.apache.hadoop.hbase.snapshot.UnknownSnapshotException;
+import org.apache.hadoop.hbase.util.Addressing;
+import org.apache.hadoop.hbase.util.Bytes;
+import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;
+import org.apache.hadoop.hbase.util.ForeignExceptionUtil;
+import org.apache.hadoop.hbase.util.Pair;
+import org.apache.hadoop.ipc.RemoteException;
+import org.apache.hadoop.util.StringUtils;
+import org.apache.yetus.audience.InterfaceAudience;
+import org.apache.yetus.audience.InterfaceStability;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.apache.hbase.thirdparty.com.google.common.base.Preconditions;
+import org.apache.hbase.thirdparty.com.google.protobuf.ServiceException;
+import
org.apache.hbase.thirdparty.org.apache.commons.collections4.CollectionUtils;
import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;
import org.apache.hadoop.hbase.shaded.protobuf.RequestConverter;
import org.apache.hadoop.hbase.shaded.protobuf.generated.AccessControlProtos;
@@ -163,8 +182,7 @@ import
org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos.IsInMainte
import
org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos.IsProcedureDoneRequest;
import
org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos.IsProcedureDoneResponse;
import
org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos.IsRpcThrottleEnabledRequest;
-import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos
- .IsSnapshotCleanupEnabledRequest;
+import
org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos.IsSnapshotCleanupEnabledRequest;
import
org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos.IsSnapshotDoneRequest;
import
org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos.IsSnapshotDoneResponse;
import
org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos.ListDecommissionedRegionServersRequest;
@@ -211,25 +229,6 @@ import
org.apache.hadoop.hbase.shaded.protobuf.generated.ReplicationProtos.GetRe
import
org.apache.hadoop.hbase.shaded.protobuf.generated.ReplicationProtos.RemoveReplicationPeerResponse;
import
org.apache.hadoop.hbase.shaded.protobuf.generated.ReplicationProtos.UpdateReplicationPeerConfigResponse;
import org.apache.hadoop.hbase.shaded.protobuf.generated.SnapshotProtos;
-import org.apache.hadoop.hbase.snapshot.ClientSnapshotDescriptionUtils;
-import org.apache.hadoop.hbase.snapshot.HBaseSnapshotException;
-import org.apache.hadoop.hbase.snapshot.RestoreSnapshotException;
-import org.apache.hadoop.hbase.snapshot.SnapshotCreationException;
-import org.apache.hadoop.hbase.snapshot.UnknownSnapshotException;
-import org.apache.hadoop.hbase.util.Addressing;
-import org.apache.hadoop.hbase.util.Bytes;
-import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;
-import org.apache.hadoop.hbase.util.ForeignExceptionUtil;
-import org.apache.hadoop.hbase.util.Pair;
-import org.apache.hadoop.ipc.RemoteException;
-import org.apache.hadoop.util.StringUtils;
-import org.apache.hbase.thirdparty.com.google.common.base.Preconditions;
-import org.apache.hbase.thirdparty.com.google.protobuf.ServiceException;
-import
org.apache.hbase.thirdparty.org.apache.commons.collections4.CollectionUtils;
-import org.apache.yetus.audience.InterfaceAudience;
-import org.apache.yetus.audience.InterfaceStability;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
/**
* HBaseAdmin is no longer a client API. It is marked
InterfaceAudience.Private indicating that
@@ -1476,26 +1475,14 @@ public class HBaseAdmin implements Admin {
});
}
- @Override
- public boolean balance() throws IOException {
- return executeCallable(new MasterCallable<Boolean>(getConnection(),
getRpcControllerFactory()) {
- @Override
- protected Boolean rpcCall() throws Exception {
- return master.balance(getRpcController(),
- RequestConverter.buildBalanceRequest(false)).getBalancerRan();
- }
- });
- }
-
- @Override
- public boolean balance(final boolean force) throws IOException {
- return executeCallable(new MasterCallable<Boolean>(getConnection(),
getRpcControllerFactory()) {
- @Override
- protected Boolean rpcCall() throws Exception {
- return master.balance(getRpcController(),
- RequestConverter.buildBalanceRequest(force)).getBalancerRan();
- }
- });
+ @Override public BalanceResponse balance(BalanceRequest request) throws
IOException {
+ return executeCallable(
+ new MasterCallable<BalanceResponse>(getConnection(),
getRpcControllerFactory()) {
+ @Override protected BalanceResponse rpcCall() throws Exception {
+ MasterProtos.BalanceRequest req =
ProtobufUtil.toBalanceRequest(request);
+ return
ProtobufUtil.toBalanceResponse(master.balance(getRpcController(), req));
+ }
+ });
}
@Override
diff --git
a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/RawAsyncHBaseAdmin.java
b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/RawAsyncHBaseAdmin.java
index 57d4bac..a0e5320 100644
---
a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/RawAsyncHBaseAdmin.java
+++
b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/RawAsyncHBaseAdmin.java
@@ -126,14 +126,13 @@ import
org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos;
import
org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.ProcedureDescription;
import
org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionSpecifier.RegionSpecifierType;
import
org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.TableSchema;
+import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos;
import
org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos.AbortProcedureRequest;
import
org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos.AbortProcedureResponse;
import
org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos.AddColumnRequest;
import
org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos.AddColumnResponse;
import
org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos.AssignRegionRequest;
import
org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos.AssignRegionResponse;
-import
org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos.BalanceRequest;
-import
org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos.BalanceResponse;
import
org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos.ClearDeadServersRequest;
import
org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos.ClearDeadServersResponse;
import
org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos.CreateNamespaceRequest;
@@ -3210,15 +3209,16 @@ class RawAsyncHBaseAdmin implements AsyncAdmin {
}
@Override
- public CompletableFuture<Boolean> balance(boolean forcible) {
+ public CompletableFuture<BalanceResponse> balance(BalanceRequest request) {
return this
- .<Boolean> newMasterCaller()
+ .<BalanceResponse> newMasterCaller()
.action(
- (controller, stub) -> this.<BalanceRequest, BalanceResponse,
Boolean> call(controller,
- stub, RequestConverter.buildBalanceRequest(forcible),
- (s, c, req, done) -> s.balance(c, req, done), (resp) ->
resp.getBalancerRan())).call();
+ (controller, stub) -> this.<MasterProtos.BalanceRequest,
MasterProtos.BalanceResponse, BalanceResponse> call(controller,
+ stub, ProtobufUtil.toBalanceRequest(request),
+ (s, c, req, done) -> s.balance(c, req, done), (resp) ->
ProtobufUtil.toBalanceResponse(resp))).call();
}
+
@Override
public CompletableFuture<Boolean> isBalancerEnabled() {
return this
diff --git
a/hbase-client/src/main/java/org/apache/hadoop/hbase/shaded/protobuf/ProtobufUtil.java
b/hbase-client/src/main/java/org/apache/hadoop/hbase/shaded/protobuf/ProtobufUtil.java
index c2544f6..2297732 100644
---
a/hbase-client/src/main/java/org/apache/hadoop/hbase/shaded/protobuf/ProtobufUtil.java
+++
b/hbase-client/src/main/java/org/apache/hadoop/hbase/shaded/protobuf/ProtobufUtil.java
@@ -46,6 +46,7 @@ import java.util.stream.Collectors;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.Path;
+import org.apache.hadoop.hbase.client.BalanceRequest;
import org.apache.hadoop.hbase.ByteBufferExtendedCell;
import org.apache.hadoop.hbase.CacheEvictionStats;
import org.apache.hadoop.hbase.CacheEvictionStatsBuilder;
@@ -67,6 +68,7 @@ import org.apache.hadoop.hbase.NamespaceDescriptor;
import org.apache.hadoop.hbase.ServerName;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.client.Append;
+import org.apache.hadoop.hbase.client.BalanceResponse;
import org.apache.hadoop.hbase.client.BalancerRejection;
import org.apache.hadoop.hbase.client.BalancerDecision;
import org.apache.hadoop.hbase.client.CheckAndMutate;
@@ -3753,4 +3755,34 @@ public final class ProtobufUtil {
.build();
}
+ public static MasterProtos.BalanceRequest toBalanceRequest(BalanceRequest
request) {
+ return MasterProtos.BalanceRequest.newBuilder()
+ .setDryRun(request.isDryRun())
+ .setIgnoreRit(request.isIgnoreRegionsInTransition())
+ .build();
+ }
+
+ public static BalanceRequest toBalanceRequest(MasterProtos.BalanceRequest
request) {
+ return BalanceRequest.newBuilder()
+ .setDryRun(request.hasDryRun() && request.getDryRun())
+ .setIgnoreRegionsInTransition(request.hasIgnoreRit() &&
request.getIgnoreRit())
+ .build();
+ }
+
+ public static MasterProtos.BalanceResponse toBalanceResponse(BalanceResponse
response) {
+ return MasterProtos.BalanceResponse.newBuilder()
+ .setBalancerRan(response.isBalancerRan())
+ .setMovesCalculated(response.getMovesCalculated())
+ .setMovesExecuted(response.getMovesExecuted())
+ .build();
+ }
+
+ public static BalanceResponse toBalanceResponse(MasterProtos.BalanceResponse
response) {
+ return BalanceResponse.newBuilder()
+ .setBalancerRan(response.hasBalancerRan() && response.getBalancerRan())
+ .setMovesCalculated(response.hasMovesCalculated() ?
response.getMovesExecuted() : 0)
+ .setMovesExecuted(response.hasMovesExecuted() ?
response.getMovesExecuted() : 0)
+ .build();
+ }
+
}
diff --git
a/hbase-client/src/main/java/org/apache/hadoop/hbase/shaded/protobuf/RequestConverter.java
b/hbase-client/src/main/java/org/apache/hadoop/hbase/shaded/protobuf/RequestConverter.java
index bdae13b..5f2181e 100644
---
a/hbase-client/src/main/java/org/apache/hadoop/hbase/shaded/protobuf/RequestConverter.java
+++
b/hbase-client/src/main/java/org/apache/hadoop/hbase/shaded/protobuf/RequestConverter.java
@@ -106,7 +106,6 @@ import
org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionSpeci
import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos;
import
org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos.AddColumnRequest;
import
org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos.AssignRegionRequest;
-import
org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos.BalanceRequest;
import
org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos.ClearDeadServersRequest;
import
org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos.CreateNamespaceRequest;
import
org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos.CreateTableRequest;
@@ -1577,15 +1576,6 @@ public final class RequestConverter {
}
/**
- * Creates a protocol buffer BalanceRequest
- *
- * @return a BalanceRequest
- */
- public static BalanceRequest buildBalanceRequest(boolean force) {
- return BalanceRequest.newBuilder().setForce(force).build();
- }
-
- /**
* Creates a protocol buffer SetBalancerRunningRequest
*
* @param on
diff --git a/hbase-protocol-shaded/src/main/protobuf/Master.proto
b/hbase-protocol-shaded/src/main/protobuf/Master.proto
index 045feb4..4a6bb39 100644
--- a/hbase-protocol-shaded/src/main/protobuf/Master.proto
+++ b/hbase-protocol-shaded/src/main/protobuf/Master.proto
@@ -292,11 +292,14 @@ message IsInMaintenanceModeResponse {
}
message BalanceRequest {
- optional bool force = 1;
+ optional bool ignore_rit = 1;
+ optional bool dry_run = 2;
}
message BalanceResponse {
required bool balancer_ran = 1;
+ optional uint32 moves_calculated = 2;
+ optional uint32 moves_executed = 3;
}
message SetBalancerRunningRequest {
diff --git
a/hbase-rsgroup/src/main/java/org/apache/hadoop/hbase/rsgroup/RSGroupAdmin.java
b/hbase-rsgroup/src/main/java/org/apache/hadoop/hbase/rsgroup/RSGroupAdmin.java
index e698f9a..c1c5916 100644
---
a/hbase-rsgroup/src/main/java/org/apache/hadoop/hbase/rsgroup/RSGroupAdmin.java
+++
b/hbase-rsgroup/src/main/java/org/apache/hadoop/hbase/rsgroup/RSGroupAdmin.java
@@ -23,6 +23,8 @@ import java.util.Map;
import java.util.Set;
import org.apache.hadoop.hbase.TableName;
+import org.apache.hadoop.hbase.client.BalanceRequest;
+import org.apache.hadoop.hbase.client.BalanceResponse;
import org.apache.hadoop.hbase.net.Address;
import org.apache.yetus.audience.InterfaceAudience;
@@ -67,7 +69,17 @@ public interface RSGroupAdmin {
*
* @return boolean Whether balance ran or not
*/
- boolean balanceRSGroup(String groupName) throws IOException;
+ default BalanceResponse balanceRSGroup(String groupName) throws IOException {
+ return balanceRSGroup(groupName, BalanceRequest.defaultInstance());
+ }
+
+ /**
+ * Balance regions in the given RegionServer group, running based on
+ * the given {@link BalanceRequest}.
+ *
+ * @return boolean Whether balance ran or not
+ */
+ BalanceResponse balanceRSGroup(String groupName, BalanceRequest request)
throws IOException;
/**
* Lists current set of RegionServer groups.
diff --git
a/hbase-rsgroup/src/main/java/org/apache/hadoop/hbase/rsgroup/RSGroupAdminClient.java
b/hbase-rsgroup/src/main/java/org/apache/hadoop/hbase/rsgroup/RSGroupAdminClient.java
index 08357f6..9e5c167 100644
---
a/hbase-rsgroup/src/main/java/org/apache/hadoop/hbase/rsgroup/RSGroupAdminClient.java
+++
b/hbase-rsgroup/src/main/java/org/apache/hadoop/hbase/rsgroup/RSGroupAdminClient.java
@@ -32,13 +32,15 @@ import org.apache.hadoop.hbase.ServerName;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.TableNotFoundException;
import org.apache.hadoop.hbase.client.Admin;
+import org.apache.hadoop.hbase.client.BalanceRequest;
+import org.apache.hadoop.hbase.client.BalanceResponse;
import org.apache.hadoop.hbase.client.Connection;
import org.apache.hadoop.hbase.net.Address;
import org.apache.hadoop.hbase.protobuf.ProtobufUtil;
import org.apache.hadoop.hbase.protobuf.generated.HBaseProtos;
import org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.NameStringPair;
+import org.apache.hadoop.hbase.protobuf.generated.RSGroupAdminProtos;
import
org.apache.hadoop.hbase.protobuf.generated.RSGroupAdminProtos.AddRSGroupRequest;
-import
org.apache.hadoop.hbase.protobuf.generated.RSGroupAdminProtos.BalanceRSGroupRequest;
import
org.apache.hadoop.hbase.protobuf.generated.RSGroupAdminProtos.GetRSGroupInfoOfServerRequest;
import
org.apache.hadoop.hbase.protobuf.generated.RSGroupAdminProtos.GetRSGroupInfoOfServerResponse;
import
org.apache.hadoop.hbase.protobuf.generated.RSGroupAdminProtos.GetRSGroupInfoOfTableRequest;
@@ -158,11 +160,11 @@ public class RSGroupAdminClient implements RSGroupAdmin {
}
@Override
- public boolean balanceRSGroup(String groupName) throws IOException {
- BalanceRSGroupRequest request = BalanceRSGroupRequest.newBuilder()
- .setRSGroupName(groupName).build();
+ public BalanceResponse balanceRSGroup(String groupName, BalanceRequest
request) throws IOException {
try {
- return stub.balanceRSGroup(null, request).getBalanceRan();
+ RSGroupAdminProtos.BalanceRSGroupRequest req =
+ RSGroupProtobufUtil.createBalanceRSGroupRequest(groupName, request);
+ return RSGroupProtobufUtil.toBalanceResponse(stub.balanceRSGroup(null,
req));
} catch (ServiceException e) {
throw ProtobufUtil.handleRemoteException(e);
}
diff --git
a/hbase-rsgroup/src/main/java/org/apache/hadoop/hbase/rsgroup/RSGroupAdminEndpoint.java
b/hbase-rsgroup/src/main/java/org/apache/hadoop/hbase/rsgroup/RSGroupAdminEndpoint.java
index bf26de1..5488fa8 100644
---
a/hbase-rsgroup/src/main/java/org/apache/hadoop/hbase/rsgroup/RSGroupAdminEndpoint.java
+++
b/hbase-rsgroup/src/main/java/org/apache/hadoop/hbase/rsgroup/RSGroupAdminEndpoint.java
@@ -39,6 +39,8 @@ import org.apache.hadoop.hbase.NamespaceDescriptor;
import org.apache.hadoop.hbase.PleaseHoldException;
import org.apache.hadoop.hbase.ServerName;
import org.apache.hadoop.hbase.TableName;
+import org.apache.hadoop.hbase.client.BalanceRequest;
+import org.apache.hadoop.hbase.client.BalanceResponse;
import org.apache.hadoop.hbase.client.RegionInfo;
import org.apache.hadoop.hbase.client.SnapshotDescription;
import org.apache.hadoop.hbase.client.TableDescriptor;
@@ -291,24 +293,31 @@ public class RSGroupAdminEndpoint implements
MasterCoprocessor, MasterObserver {
@Override
public void balanceRSGroup(RpcController controller,
BalanceRSGroupRequest request, RpcCallback<BalanceRSGroupResponse>
done) {
- BalanceRSGroupResponse.Builder builder =
BalanceRSGroupResponse.newBuilder();
+ BalanceRequest balanceRequest =
RSGroupProtobufUtil.toBalanceRequest(request);
+
+ BalanceRSGroupResponse.Builder builder =
BalanceRSGroupResponse.newBuilder()
+ .setBalanceRan(false);
+
LOG.info(master.getClientIdAuditPrefix() + " balance rsgroup, group="
+ request.getRSGroupName());
try {
if (master.getMasterCoprocessorHost() != null) {
-
master.getMasterCoprocessorHost().preBalanceRSGroup(request.getRSGroupName());
+
master.getMasterCoprocessorHost().preBalanceRSGroup(request.getRSGroupName(),
balanceRequest);
}
+
checkPermission("balanceRSGroup");
- boolean balancerRan =
groupAdminServer.balanceRSGroup(request.getRSGroupName());
- builder.setBalanceRan(balancerRan);
+ BalanceResponse response =
groupAdminServer.balanceRSGroup(request.getRSGroupName(), balanceRequest);
+ RSGroupProtobufUtil.populateBalanceRSGroupResponse(builder, response);
+
if (master.getMasterCoprocessorHost() != null) {
master.getMasterCoprocessorHost().postBalanceRSGroup(request.getRSGroupName(),
- balancerRan);
+ balanceRequest,
+ response);
}
} catch (IOException e) {
CoprocessorRpcUtils.setControllerException(controller, e);
- builder.setBalanceRan(false);
}
+
done.run(builder.build());
}
diff --git
a/hbase-rsgroup/src/main/java/org/apache/hadoop/hbase/rsgroup/RSGroupAdminServer.java
b/hbase-rsgroup/src/main/java/org/apache/hadoop/hbase/rsgroup/RSGroupAdminServer.java
index 744749f..d25cb5e 100644
---
a/hbase-rsgroup/src/main/java/org/apache/hadoop/hbase/rsgroup/RSGroupAdminServer.java
+++
b/hbase-rsgroup/src/main/java/org/apache/hadoop/hbase/rsgroup/RSGroupAdminServer.java
@@ -33,6 +33,8 @@ import org.apache.hadoop.hbase.HConstants;
import org.apache.hadoop.hbase.NamespaceDescriptor;
import org.apache.hadoop.hbase.ServerName;
import org.apache.hadoop.hbase.TableName;
+import org.apache.hadoop.hbase.client.BalanceRequest;
+import org.apache.hadoop.hbase.client.BalanceResponse;
import org.apache.hadoop.hbase.client.RegionInfo;
import org.apache.hadoop.hbase.client.TableDescriptor;
import org.apache.hadoop.hbase.client.TableDescriptorBuilder;
@@ -508,32 +510,36 @@ public class RSGroupAdminServer implements RSGroupAdmin {
}
@Override
- public boolean balanceRSGroup(String groupName) throws IOException {
+ public BalanceResponse balanceRSGroup(String groupName, BalanceRequest
request) throws IOException {
ServerManager serverManager = master.getServerManager();
LoadBalancer balancer = master.getLoadBalancer();
+ BalanceResponse.Builder responseBuilder = BalanceResponse.newBuilder();
+
synchronized (balancer) {
// If balance not true, don't run balancer.
- if (!((HMaster) master).isBalancerOn()) {
- return false;
+ if (!((HMaster) master).isBalancerOn() && !request.isDryRun()) {
+ return responseBuilder.build();
}
if (getRSGroupInfo(groupName) == null) {
throw new ConstraintException("RSGroup does not exist: "+groupName);
}
+
// Only allow one balance run at at time.
Map<String, RegionState> groupRIT =
rsGroupGetRegionsInTransition(groupName);
- if (groupRIT.size() > 0) {
+ if (groupRIT.size() > 0 && !request.isIgnoreRegionsInTransition()) {
LOG.debug("Not running balancer because {} region(s) in transition:
{}", groupRIT.size(),
StringUtils.abbreviate(
master.getAssignmentManager().getRegionStates().getRegionsInTransition().toString(),
256));
- return false;
+ return responseBuilder.build();
}
+
if (serverManager.areDeadServersInProgress()) {
LOG.debug("Not running balancer because processing dead
regionserver(s): {}",
serverManager.getDeadServers());
- return false;
+ return responseBuilder.build();
}
//We balance per group instead of per table
@@ -541,12 +547,17 @@ public class RSGroupAdminServer implements RSGroupAdmin {
getRSGroupAssignmentsByTable(master.getTableStateManager(),
groupName);
List<RegionPlan> plans = balancer.balanceCluster(assignmentsByTable);
boolean balancerRan = !plans.isEmpty();
- if (balancerRan) {
+
+
responseBuilder.setBalancerRan(balancerRan).setMovesCalculated(plans.size());
+
+ if (balancerRan && !request.isDryRun()) {
LOG.info("RSGroup balance {} starting with plan count: {}", groupName,
plans.size());
- master.executeRegionPlansWithThrottling(plans);
+ List<RegionPlan> executed =
master.executeRegionPlansWithThrottling(plans);
+ responseBuilder.setMovesExecuted(executed.size());
LOG.info("RSGroup balance " + groupName + " completed");
}
- return balancerRan;
+
+ return responseBuilder.build();
}
}
diff --git
a/hbase-rsgroup/src/main/java/org/apache/hadoop/hbase/rsgroup/RSGroupProtobufUtil.java
b/hbase-rsgroup/src/main/java/org/apache/hadoop/hbase/rsgroup/RSGroupProtobufUtil.java
index 9f092c5..42472d3 100644
---
a/hbase-rsgroup/src/main/java/org/apache/hadoop/hbase/rsgroup/RSGroupProtobufUtil.java
+++
b/hbase-rsgroup/src/main/java/org/apache/hadoop/hbase/rsgroup/RSGroupProtobufUtil.java
@@ -21,12 +21,15 @@ package org.apache.hadoop.hbase.rsgroup;
import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;
-
import org.apache.hadoop.hbase.TableName;
+import org.apache.hadoop.hbase.client.BalanceRequest;
+import org.apache.hadoop.hbase.client.BalanceResponse;
import org.apache.hadoop.hbase.net.Address;
import org.apache.hadoop.hbase.protobuf.ProtobufUtil;
import org.apache.hadoop.hbase.protobuf.generated.HBaseProtos;
import org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.NameStringPair;
+import
org.apache.hadoop.hbase.protobuf.generated.RSGroupAdminProtos.BalanceRSGroupRequest;
+import
org.apache.hadoop.hbase.protobuf.generated.RSGroupAdminProtos.BalanceRSGroupResponse;
import org.apache.hadoop.hbase.protobuf.generated.RSGroupProtos;
import org.apache.hadoop.hbase.protobuf.generated.TableProtos;
import org.apache.yetus.audience.InterfaceAudience;
@@ -36,6 +39,36 @@ final class RSGroupProtobufUtil {
private RSGroupProtobufUtil() {
}
+ static void populateBalanceRSGroupResponse(BalanceRSGroupResponse.Builder
responseBuilder, BalanceResponse response) {
+ responseBuilder
+ .setBalanceRan(response.isBalancerRan())
+ .setMovesCalculated(response.getMovesCalculated())
+ .setMovesExecuted(response.getMovesExecuted());
+ }
+
+ static BalanceResponse toBalanceResponse(BalanceRSGroupResponse response) {
+ return BalanceResponse.newBuilder()
+ .setBalancerRan(response.getBalanceRan())
+ .setMovesExecuted(response.hasMovesExecuted() ?
response.getMovesExecuted() : 0)
+ .setMovesCalculated(response.hasMovesCalculated() ?
response.getMovesCalculated() : 0)
+ .build();
+ }
+
+ static BalanceRSGroupRequest createBalanceRSGroupRequest(String groupName,
BalanceRequest request) {
+ return BalanceRSGroupRequest.newBuilder()
+ .setRSGroupName(groupName)
+ .setDryRun(request.isDryRun())
+ .setIgnoreRit(request.isIgnoreRegionsInTransition())
+ .build();
+ }
+
+ static BalanceRequest toBalanceRequest(BalanceRSGroupRequest request) {
+ return BalanceRequest.newBuilder()
+ .setDryRun(request.hasDryRun() && request.getDryRun())
+ .setIgnoreRegionsInTransition(request.hasIgnoreRit() &&
request.getIgnoreRit())
+ .build();
+ }
+
static RSGroupInfo toGroupInfo(RSGroupProtos.RSGroupInfo proto) {
RSGroupInfo rsGroupInfo = new RSGroupInfo(proto.getName());
for(HBaseProtos.ServerName el: proto.getServersList()) {
diff --git a/hbase-rsgroup/src/main/protobuf/RSGroupAdmin.proto
b/hbase-rsgroup/src/main/protobuf/RSGroupAdmin.proto
index 54add90..2a4f2d8 100644
--- a/hbase-rsgroup/src/main/protobuf/RSGroupAdmin.proto
+++ b/hbase-rsgroup/src/main/protobuf/RSGroupAdmin.proto
@@ -86,10 +86,14 @@ message RemoveRSGroupResponse {
message BalanceRSGroupRequest {
required string r_s_group_name = 1;
+ optional bool ignore_rit = 2;
+ optional bool dry_run = 3;
}
message BalanceRSGroupResponse {
required bool balanceRan = 1;
+ optional uint32 moves_calculated = 2;
+ optional uint32 moves_executed = 3;
}
message ListRSGroupInfosRequest {
diff --git
a/hbase-rsgroup/src/test/java/org/apache/hadoop/hbase/rsgroup/TestRSGroupsBalance.java
b/hbase-rsgroup/src/test/java/org/apache/hadoop/hbase/rsgroup/TestRSGroupsBalance.java
index e419ee0..2e502b6 100644
---
a/hbase-rsgroup/src/test/java/org/apache/hadoop/hbase/rsgroup/TestRSGroupsBalance.java
+++
b/hbase-rsgroup/src/test/java/org/apache/hadoop/hbase/rsgroup/TestRSGroupsBalance.java
@@ -30,6 +30,8 @@ import org.apache.hadoop.hbase.ServerName;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.Waiter;
import org.apache.hadoop.hbase.Waiter.Predicate;
+import org.apache.hadoop.hbase.client.BalanceRequest;
+import org.apache.hadoop.hbase.client.BalanceResponse;
import org.apache.hadoop.hbase.client.ColumnFamilyDescriptorBuilder;
import org.apache.hadoop.hbase.client.RegionInfo;
import org.apache.hadoop.hbase.client.TableDescriptor;
@@ -80,11 +82,65 @@ public class TestRSGroupsBalance extends TestRSGroupsBase {
@Test
public void testGroupBalance() throws Exception {
- LOG.info(name.getMethodName());
- String newGroupName = getGroupName(name.getMethodName());
+ String methodName = name.getMethodName();
+
+ LOG.info(methodName);
+ String newGroupName = getGroupName(methodName);
+ TableName tableName = TableName.valueOf(tablePrefix + "_ns", methodName);
+
+ ServerName first = setupBalanceTest(newGroupName, tableName);
+
+ // balance the other group and make sure it doesn't affect the new group
+ admin.balancerSwitch(true, true);
+ rsGroupAdmin.balanceRSGroup(RSGroupInfo.DEFAULT_GROUP);
+ assertEquals(6,
getTableServerRegionMap().get(tableName).get(first).size());
+
+ // disable balance, balancer will not be run and return false
+ admin.balancerSwitch(false, true);
+ assertFalse(rsGroupAdmin.balanceRSGroup(newGroupName).isBalancerRan());
+ assertEquals(6,
getTableServerRegionMap().get(tableName).get(first).size());
+
+ // enable balance
+ admin.balancerSwitch(true, true);
+ rsGroupAdmin.balanceRSGroup(newGroupName);
+ TEST_UTIL.waitFor(WAIT_TIMEOUT, new Waiter.Predicate<Exception>() {
+ @Override
+ public boolean evaluate() throws Exception {
+ for (List<String> regions :
getTableServerRegionMap().get(tableName).values()) {
+ if (2 != regions.size()) {
+ return false;
+ }
+ }
+ return true;
+ }
+ });
+ admin.balancerSwitch(false, true);
+ }
+
+ @Test
+ public void testGroupDryRunBalance() throws Exception {
+ String methodName = name.getMethodName();
+
+ LOG.info(methodName);
+ String newGroupName = getGroupName(methodName);
+ final TableName tableName = TableName.valueOf(tablePrefix + "_ns",
methodName);
+
+ ServerName first = setupBalanceTest(newGroupName, tableName);
+
+ // run the balancer in dry run mode. it should return true, but should not
actually move any regions
+ admin.balancerSwitch(true, true);
+ BalanceResponse response = rsGroupAdmin.balanceRSGroup(newGroupName,
+ BalanceRequest.newBuilder().setDryRun(true).build());
+ assertTrue(response.isBalancerRan());
+ assertTrue(response.getMovesCalculated() > 0);
+ assertEquals(0, response.getMovesExecuted());
+ // validate imbalance still exists.
+ assertEquals(6,
getTableServerRegionMap().get(tableName).get(first).size());
+ }
+
+ private ServerName setupBalanceTest(String newGroupName, TableName
tableName) throws Exception {
addGroup(newGroupName, 3);
- final TableName tableName = TableName.valueOf(tablePrefix + "_ns",
name.getMethodName());
admin.createNamespace(NamespaceDescriptor.create(tableName.getNamespaceAsString())
.addConfiguration(RSGroupInfo.NAMESPACE_DESC_PROP_GROUP,
newGroupName).build());
final TableDescriptor desc = TableDescriptorBuilder.newBuilder(tableName)
@@ -126,31 +182,7 @@ public class TestRSGroupsBalance extends TestRSGroupsBase {
}
});
- // balance the other group and make sure it doesn't affect the new group
- admin.balancerSwitch(true, true);
- rsGroupAdmin.balanceRSGroup(RSGroupInfo.DEFAULT_GROUP);
- assertEquals(6,
getTableServerRegionMap().get(tableName).get(first).size());
-
- // disable balance, balancer will not be run and return false
- admin.balancerSwitch(false, true);
- assertFalse(rsGroupAdmin.balanceRSGroup(newGroupName));
- assertEquals(6,
getTableServerRegionMap().get(tableName).get(first).size());
-
- // enable balance
- admin.balancerSwitch(true, true);
- rsGroupAdmin.balanceRSGroup(newGroupName);
- TEST_UTIL.waitFor(WAIT_TIMEOUT, new Waiter.Predicate<Exception>() {
- @Override
- public boolean evaluate() throws Exception {
- for (List<String> regions :
getTableServerRegionMap().get(tableName).values()) {
- if (2 != regions.size()) {
- return false;
- }
- }
- return true;
- }
- });
- admin.balancerSwitch(false, true);
+ return first;
}
@Test
@@ -167,7 +199,7 @@ public class TestRSGroupsBalance extends TestRSGroupsBase {
RSGroupInfo.getName());
admin.balancerSwitch(true, true);
- assertTrue(rsGroupAdmin.balanceRSGroup(RSGroupInfo.getName()));
+
assertTrue(rsGroupAdmin.balanceRSGroup(RSGroupInfo.getName()).isBalancerRan());
admin.balancerSwitch(false, true);
assertTrue(observer.preBalanceRSGroupCalled);
assertTrue(observer.postBalanceRSGroupCalled);
diff --git
a/hbase-rsgroup/src/test/java/org/apache/hadoop/hbase/rsgroup/TestRSGroupsBase.java
b/hbase-rsgroup/src/test/java/org/apache/hadoop/hbase/rsgroup/TestRSGroupsBase.java
index c4ae7d4..d658ba4 100644
---
a/hbase-rsgroup/src/test/java/org/apache/hadoop/hbase/rsgroup/TestRSGroupsBase.java
+++
b/hbase-rsgroup/src/test/java/org/apache/hadoop/hbase/rsgroup/TestRSGroupsBase.java
@@ -43,6 +43,8 @@ import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.Waiter;
import org.apache.hadoop.hbase.client.AbstractTestUpdateConfiguration;
import org.apache.hadoop.hbase.client.Admin;
+import org.apache.hadoop.hbase.client.BalanceRequest;
+import org.apache.hadoop.hbase.client.BalanceResponse;
import org.apache.hadoop.hbase.client.RegionInfo;
import org.apache.hadoop.hbase.client.TableDescriptor;
import org.apache.hadoop.hbase.coprocessor.CoprocessorHost;
@@ -407,13 +409,13 @@ public abstract class TestRSGroupsBase extends
AbstractTestUpdateConfiguration {
@Override
public void preBalanceRSGroup(final
ObserverContext<MasterCoprocessorEnvironment> ctx,
- String groupName) throws IOException {
+ String groupName, BalanceRequest request) throws IOException {
preBalanceRSGroupCalled = true;
}
@Override
public void postBalanceRSGroup(final
ObserverContext<MasterCoprocessorEnvironment> ctx,
- String groupName, boolean balancerRan) throws IOException {
+ String groupName, BalanceRequest request, BalanceResponse response)
throws IOException {
postBalanceRSGroupCalled = true;
}
diff --git
a/hbase-rsgroup/src/test/java/org/apache/hadoop/hbase/rsgroup/TestRSGroupsFallback.java
b/hbase-rsgroup/src/test/java/org/apache/hadoop/hbase/rsgroup/TestRSGroupsFallback.java
index 15220c4..bd45e8c 100644
---
a/hbase-rsgroup/src/test/java/org/apache/hadoop/hbase/rsgroup/TestRSGroupsFallback.java
+++
b/hbase-rsgroup/src/test/java/org/apache/hadoop/hbase/rsgroup/TestRSGroupsFallback.java
@@ -107,14 +107,14 @@ public class TestRSGroupsFallback extends
TestRSGroupsBase {
Address startRSAddress = t.getRegionServer().getServerName().getAddress();
TEST_UTIL.waitFor(3000, () ->
rsGroupAdmin.getRSGroupInfo(RSGroupInfo.DEFAULT_GROUP)
.containsServer(startRSAddress));
- assertTrue(master.balance());
+ assertTrue(master.balance().isBalancerRan());
assertRegionsInGroup(tableName, RSGroupInfo.DEFAULT_GROUP);
// add a new server to test group, regions move back
t = TEST_UTIL.getMiniHBaseCluster().startRegionServerAndWait(60000);
rsGroupAdmin.moveServers(
Collections.singleton(t.getRegionServer().getServerName().getAddress()),
groupName);
- assertTrue(master.balance());
+ assertTrue(master.balance().isBalancerRan());
assertRegionsInGroup(tableName, groupName);
TEST_UTIL.deleteTable(tableName);
diff --git
a/hbase-rsgroup/src/test/java/org/apache/hadoop/hbase/rsgroup/VerifyingRSGroupAdminClient.java
b/hbase-rsgroup/src/test/java/org/apache/hadoop/hbase/rsgroup/VerifyingRSGroupAdminClient.java
index 99d36ee..7b8472d 100644
---
a/hbase-rsgroup/src/test/java/org/apache/hadoop/hbase/rsgroup/VerifyingRSGroupAdminClient.java
+++
b/hbase-rsgroup/src/test/java/org/apache/hadoop/hbase/rsgroup/VerifyingRSGroupAdminClient.java
@@ -25,6 +25,8 @@ import java.util.Set;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.TableName;
+import org.apache.hadoop.hbase.client.BalanceRequest;
+import org.apache.hadoop.hbase.client.BalanceResponse;
import org.apache.hadoop.hbase.client.ConnectionFactory;
import org.apache.hadoop.hbase.client.Result;
import org.apache.hadoop.hbase.client.Scan;
@@ -92,8 +94,8 @@ public class VerifyingRSGroupAdminClient implements
RSGroupAdmin {
}
@Override
- public boolean balanceRSGroup(String groupName) throws IOException {
- return wrapped.balanceRSGroup(groupName);
+ public BalanceResponse balanceRSGroup(String groupName, BalanceRequest
request) throws IOException {
+ return wrapped.balanceRSGroup(groupName, request);
}
@Override
diff --git
a/hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/MasterObserver.java
b/hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/MasterObserver.java
index 7f09fb0e..ce70647 100644
---
a/hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/MasterObserver.java
+++
b/hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/MasterObserver.java
@@ -28,6 +28,8 @@ import org.apache.hadoop.hbase.MetaMutationAnnotation;
import org.apache.hadoop.hbase.NamespaceDescriptor;
import org.apache.hadoop.hbase.ServerName;
import org.apache.hadoop.hbase.TableName;
+import org.apache.hadoop.hbase.client.BalanceRequest;
+import org.apache.hadoop.hbase.client.BalanceResponse;
import org.apache.hadoop.hbase.client.MasterSwitchType;
import org.apache.hadoop.hbase.client.Mutation;
import org.apache.hadoop.hbase.client.RegionInfo;
@@ -566,18 +568,20 @@ public interface MasterObserver {
* Called prior to requesting rebalancing of the cluster regions, though
after
* the initial checks for regions in transition and the balance switch flag.
* @param ctx the environment to interact with the framework and master
+ * @param request the request used to trigger the balancer
*/
- default void preBalance(final ObserverContext<MasterCoprocessorEnvironment>
ctx)
+ default void preBalance(final ObserverContext<MasterCoprocessorEnvironment>
ctx, BalanceRequest request)
throws IOException {}
/**
* Called after the balancing plan has been submitted.
* @param ctx the environment to interact with the framework and master
+ * @param request the request used to trigger the balance
* @param plans the RegionPlans which master has executed. RegionPlan serves
as hint
* as for the final destination for the underlying region but may not
represent the
* final state of assignment
*/
- default void postBalance(final ObserverContext<MasterCoprocessorEnvironment>
ctx, List<RegionPlan> plans)
+ default void postBalance(final ObserverContext<MasterCoprocessorEnvironment>
ctx, BalanceRequest request, List<RegionPlan> plans)
throws IOException {}
/**
@@ -1275,15 +1279,19 @@ public interface MasterObserver {
* @param groupName group name
*/
default void preBalanceRSGroup(final
ObserverContext<MasterCoprocessorEnvironment> ctx,
- String groupName) throws IOException {}
+ String groupName, BalanceRequest request) throws IOException {
+ }
/**
* Called after a region server group is removed
* @param ctx the environment to interact with the framework and master
* @param groupName group name
+ * @param request the request sent to the balancer
+ * @param response the response returned by the balancer
*/
default void postBalanceRSGroup(final
ObserverContext<MasterCoprocessorEnvironment> ctx,
- String groupName, boolean balancerRan) throws
IOException {}
+ String groupName, BalanceRequest request, BalanceResponse response)
throws IOException {
+ }
/**
* Called before servers are removed from rsgroup
diff --git
a/hbase-server/src/main/java/org/apache/hadoop/hbase/master/HMaster.java
b/hbase-server/src/main/java/org/apache/hadoop/hbase/master/HMaster.java
index 350e68a..866e3fd 100644
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/master/HMaster.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/master/HMaster.java
@@ -61,6 +61,7 @@ import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hbase.Cell;
import org.apache.hadoop.hbase.CellBuilderFactory;
import org.apache.hadoop.hbase.CellBuilderType;
+import org.apache.hadoop.hbase.client.BalanceRequest;
import org.apache.hadoop.hbase.ClusterId;
import org.apache.hadoop.hbase.ClusterMetrics;
import org.apache.hadoop.hbase.ClusterMetrics.Option;
@@ -83,6 +84,7 @@ import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.TableNotDisabledException;
import org.apache.hadoop.hbase.TableNotFoundException;
import org.apache.hadoop.hbase.UnknownRegionException;
+import org.apache.hadoop.hbase.client.BalanceResponse;
import org.apache.hadoop.hbase.client.ColumnFamilyDescriptor;
import org.apache.hadoop.hbase.client.CompactionState;
import org.apache.hadoop.hbase.client.MasterSwitchType;
@@ -1770,8 +1772,8 @@ public class HMaster extends HRegionServer implements
MasterServices {
if (interrupted) Thread.currentThread().interrupt();
}
- public boolean balance() throws IOException {
- return balance(false);
+ public BalanceResponse balance() throws IOException {
+ return balance(BalanceRequest.defaultInstance());
}
/**
@@ -1797,12 +1799,16 @@ public class HMaster extends HRegionServer implements
MasterServices {
return false;
}
- public boolean balance(boolean force) throws IOException {
- if (loadBalancerTracker == null || !loadBalancerTracker.isBalancerOn()) {
- return false;
+ public BalanceResponse balance(BalanceRequest request) throws IOException {
+ BalanceResponse.Builder responseBuilder = BalanceResponse.newBuilder();
+
+ if (loadBalancerTracker == null
+ || !(loadBalancerTracker.isBalancerOn() || request.isDryRun())) {
+ return responseBuilder.build();
}
+
if (skipRegionManagementAction("balancer")) {
- return false;
+ return responseBuilder.build();
}
synchronized (this.balancer) {
@@ -1819,28 +1825,29 @@ public class HMaster extends HRegionServer implements
MasterServices {
toPrint = regionsInTransition.subList(0, max);
truncated = true;
}
- if (!force || metaInTransition) {
- LOG.info("Not running balancer (force=" + force + ", metaRIT=" +
metaInTransition +
- ") because " + regionsInTransition.size() + " region(s) in
transition: " + toPrint +
- (truncated? "(truncated list)": ""));
- return false;
+
+ if (!request.isIgnoreRegionsInTransition() || metaInTransition) {
+ LOG.info("Not running balancer (ignoreRIT=false" + ", metaRIT=" +
metaInTransition +
+ ") because " + regionsInTransition.size() + " region(s) in
transition: " + toPrint
+ + (truncated? "(truncated list)": ""));
+ return responseBuilder.build();
}
}
if (this.serverManager.areDeadServersInProgress()) {
LOG.info("Not running balancer because processing dead
regionserver(s): " +
this.serverManager.getDeadServers());
- return false;
+ return responseBuilder.build();
}
if (this.cpHost != null) {
try {
- if (this.cpHost.preBalance()) {
+ if (this.cpHost.preBalance(request)) {
LOG.debug("Coprocessor bypassing balancer request");
- return false;
+ return responseBuilder.build();
}
} catch (IOException ioe) {
LOG.error("Error invoking master coprocessor preBalance()", ioe);
- return false;
+ return responseBuilder.build();
}
}
@@ -1856,25 +1863,34 @@ public class HMaster extends HRegionServer implements
MasterServices {
List<RegionPlan> plans = this.balancer.balanceCluster(assignments);
+ responseBuilder.setBalancerRan(true).setMovesCalculated(plans == null ?
0 : plans.size());
+
if (skipRegionManagementAction("balancer")) {
// make one last check that the cluster isn't shutting down before
proceeding.
- return false;
+ return responseBuilder.build();
}
- List<RegionPlan> sucRPs = executeRegionPlansWithThrottling(plans);
+ // For dry run we don't actually want to execute the moves, but we do
want
+ // to execute the coprocessor below
+ List<RegionPlan> sucRPs = request.isDryRun()
+ ? Collections.emptyList()
+ : executeRegionPlansWithThrottling(plans);
if (this.cpHost != null) {
try {
- this.cpHost.postBalance(sucRPs);
+ this.cpHost.postBalance(request, sucRPs);
} catch (IOException ioe) {
// balancing already succeeded so don't change the result
LOG.error("Error invoking master coprocessor postBalance()", ioe);
}
}
+
+ responseBuilder.setMovesExecuted(sucRPs.size());
}
+
// If LoadBalancer did not generate any plans, it means the cluster is
already balanced.
// Return true indicating a success.
- return true;
+ return responseBuilder.build();
}
/**
diff --git
a/hbase-server/src/main/java/org/apache/hadoop/hbase/master/MasterCoprocessorHost.java
b/hbase-server/src/main/java/org/apache/hadoop/hbase/master/MasterCoprocessorHost.java
index 3170bfc..a1f2dce 100644
---
a/hbase-server/src/main/java/org/apache/hadoop/hbase/master/MasterCoprocessorHost.java
+++
b/hbase-server/src/main/java/org/apache/hadoop/hbase/master/MasterCoprocessorHost.java
@@ -31,6 +31,8 @@ import org.apache.hadoop.hbase.NamespaceDescriptor;
import org.apache.hadoop.hbase.ServerName;
import org.apache.hadoop.hbase.SharedConnection;
import org.apache.hadoop.hbase.TableName;
+import org.apache.hadoop.hbase.client.BalanceRequest;
+import org.apache.hadoop.hbase.client.BalanceResponse;
import org.apache.hadoop.hbase.client.Connection;
import org.apache.hadoop.hbase.client.MasterSwitchType;
import org.apache.hadoop.hbase.client.Mutation;
@@ -737,20 +739,20 @@ public class MasterCoprocessorHost
});
}
- public boolean preBalance() throws IOException {
+ public boolean preBalance(final BalanceRequest request) throws IOException {
return execOperation(coprocEnvironments.isEmpty() ? null : new
MasterObserverOperation() {
@Override
public void call(MasterObserver observer) throws IOException {
- observer.preBalance(this);
+ observer.preBalance(this, request);
}
});
}
- public void postBalance(final List<RegionPlan> plans) throws IOException {
+ public void postBalance(final BalanceRequest request, final List<RegionPlan>
plans) throws IOException {
execOperation(coprocEnvironments.isEmpty() ? null : new
MasterObserverOperation() {
@Override
public void call(MasterObserver observer) throws IOException {
- observer.postBalance(this, plans);
+ observer.postBalance(this, request, plans);
}
});
}
@@ -1433,22 +1435,22 @@ public class MasterCoprocessorHost
});
}
- public void preBalanceRSGroup(final String name)
+ public void preBalanceRSGroup(final String name, final BalanceRequest
request)
throws IOException {
execOperation(coprocEnvironments.isEmpty() ? null : new
MasterObserverOperation() {
@Override
public void call(MasterObserver observer) throws IOException {
- observer.preBalanceRSGroup(this, name);
+ observer.preBalanceRSGroup(this, name, request);
}
});
}
- public void postBalanceRSGroup(final String name, final boolean balanceRan)
+ public void postBalanceRSGroup(final String name, final BalanceRequest
request, final BalanceResponse response)
throws IOException {
execOperation(coprocEnvironments.isEmpty() ? null : new
MasterObserverOperation() {
@Override
public void call(MasterObserver observer) throws IOException {
- observer.postBalanceRSGroup(this, name, balanceRan);
+ observer.postBalanceRSGroup(this, name, request, response);
}
});
}
diff --git
a/hbase-server/src/main/java/org/apache/hadoop/hbase/master/MasterRpcServices.java
b/hbase-server/src/main/java/org/apache/hadoop/hbase/master/MasterRpcServices.java
index 85f88c6..01378a2 100644
---
a/hbase-server/src/main/java/org/apache/hadoop/hbase/master/MasterRpcServices.java
+++
b/hbase-server/src/main/java/org/apache/hadoop/hbase/master/MasterRpcServices.java
@@ -663,8 +663,7 @@ public class MasterRpcServices extends RSRpcServices
implements
public BalanceResponse balance(RpcController controller,
BalanceRequest request) throws ServiceException {
try {
- return BalanceResponse.newBuilder().setBalancerRan(master.balance(
- request.hasForce()? request.getForce(): false)).build();
+ return
ProtobufUtil.toBalanceResponse(master.balance(ProtobufUtil.toBalanceRequest(request)));
} catch (IOException ex) {
throw new ServiceException(ex);
}
diff --git
a/hbase-server/src/main/java/org/apache/hadoop/hbase/security/access/AccessController.java
b/hbase-server/src/main/java/org/apache/hadoop/hbase/security/access/AccessController.java
index 0db2b32..e809299 100644
---
a/hbase-server/src/main/java/org/apache/hadoop/hbase/security/access/AccessController.java
+++
b/hbase-server/src/main/java/org/apache/hadoop/hbase/security/access/AccessController.java
@@ -58,6 +58,7 @@ import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.Tag;
import org.apache.hadoop.hbase.client.Admin;
import org.apache.hadoop.hbase.client.Append;
+import org.apache.hadoop.hbase.client.BalanceRequest;
import org.apache.hadoop.hbase.client.ColumnFamilyDescriptor;
import org.apache.hadoop.hbase.client.ColumnFamilyDescriptorBuilder;
import org.apache.hadoop.hbase.client.Delete;
@@ -1003,7 +1004,7 @@ public class AccessController implements
MasterCoprocessor, RegionCoprocessor,
}
@Override
- public void preBalance(ObserverContext<MasterCoprocessorEnvironment> c)
+ public void preBalance(ObserverContext<MasterCoprocessorEnvironment> c,
BalanceRequest request)
throws IOException {
requirePermission(c, "balance", Action.ADMIN);
}
diff --git
a/hbase-server/src/test/java/org/apache/hadoop/hbase/TestRegionRebalancing.java
b/hbase-server/src/test/java/org/apache/hadoop/hbase/TestRegionRebalancing.java
index ed37713..30492c2 100644
---
a/hbase-server/src/test/java/org/apache/hadoop/hbase/TestRegionRebalancing.java
+++
b/hbase-server/src/test/java/org/apache/hadoop/hbase/TestRegionRebalancing.java
@@ -18,6 +18,7 @@
package org.apache.hadoop.hbase;
import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import java.io.IOException;
@@ -27,6 +28,7 @@ import java.util.Arrays;
import java.util.Collection;
import java.util.List;
import org.apache.hadoop.hbase.client.Admin;
+import org.apache.hadoop.hbase.client.BalanceResponse;
import org.apache.hadoop.hbase.client.Connection;
import org.apache.hadoop.hbase.client.ConnectionFactory;
import org.apache.hadoop.hbase.client.RegionInfo;
@@ -128,14 +130,21 @@ public class TestRegionRebalancing {
assertRegionsAreBalanced();
// On a balanced cluster, calling balance() should return true
- assert(UTIL.getHBaseCluster().getMaster().balance() == true);
+ BalanceResponse response = UTIL.getHBaseCluster().getMaster().balance();
+ assertTrue(response.isBalancerRan());
+ assertEquals(0, response.getMovesCalculated());
+ assertEquals(0, response.getMovesExecuted());
// if we add a server, then the balance() call should return true
// add a region server - total of 3
LOG.info("Started third server=" +
UTIL.getHBaseCluster().startRegionServer().getRegionServer().getServerName());
waitForAllRegionsAssigned();
- assert(UTIL.getHBaseCluster().getMaster().balance() == true);
+
+ response = UTIL.getHBaseCluster().getMaster().balance();
+ assertTrue(response.isBalancerRan());
+ assertTrue(response.getMovesCalculated() > 0);
+ assertEquals(response.getMovesCalculated(), response.getMovesExecuted());
assertRegionsAreBalanced();
// kill a region server - total of 2
@@ -152,14 +161,24 @@ public class TestRegionRebalancing {
UTIL.getHBaseCluster().startRegionServer().getRegionServer().getServerName());
waitOnCrashProcessing();
waitForAllRegionsAssigned();
- assert(UTIL.getHBaseCluster().getMaster().balance() == true);
+
+ response = UTIL.getHBaseCluster().getMaster().balance();
+ assertTrue(response.isBalancerRan());
+ assertTrue(response.getMovesCalculated() > 0);
+ assertEquals(response.getMovesCalculated(), response.getMovesExecuted());
+
assertRegionsAreBalanced();
for (int i = 0; i < 6; i++){
LOG.info("Adding " + (i + 5) + "th region server");
UTIL.getHBaseCluster().startRegionServer();
}
waitForAllRegionsAssigned();
- assert(UTIL.getHBaseCluster().getMaster().balance() == true);
+
+ response = UTIL.getHBaseCluster().getMaster().balance();
+ assertTrue(response.isBalancerRan());
+ assertTrue(response.getMovesCalculated() > 0);
+ assertEquals(response.getMovesCalculated(), response.getMovesExecuted());
+
assertRegionsAreBalanced();
regionLocator.close();
}
diff --git
a/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestAsyncTableGetMultiThreaded.java
b/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestAsyncTableGetMultiThreaded.java
index 23ab43d..e6f4b1a 100644
---
a/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestAsyncTableGetMultiThreaded.java
+++
b/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestAsyncTableGetMultiThreaded.java
@@ -198,7 +198,7 @@ public class TestAsyncTableGetMultiThreaded {
}
Thread.sleep(5000);
LOG.info("====== Balancing cluster ======");
- admin.balance(true);
+
admin.balance(BalanceRequest.newBuilder().setIgnoreRegionsInTransition(true).build());
LOG.info("====== Balance cluster done ======");
Thread.sleep(5000);
ServerName metaServer =
TEST_UTIL.getHBaseCluster().getServerHoldingMeta();
diff --git
a/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestMultiParallel.java
b/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestMultiParallel.java
index 84c90de..419b812 100644
---
a/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestMultiParallel.java
+++
b/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestMultiParallel.java
@@ -824,7 +824,7 @@ public class TestMultiParallel {
@Override
public void postBalance(final
ObserverContext<MasterCoprocessorEnvironment> ctx,
- List<RegionPlan> plans) throws IOException {
+ BalanceRequest request, List<RegionPlan> plans) throws IOException {
if (!plans.isEmpty()) {
postBalanceCount.incrementAndGet();
}
diff --git
a/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestSeparateClientZKCluster.java
b/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestSeparateClientZKCluster.java
index e01c84e..52b69db 100644
---
a/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestSeparateClientZKCluster.java
+++
b/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestSeparateClientZKCluster.java
@@ -144,7 +144,7 @@ public class TestSeparateClientZKCluster {
}
LOG.info("Got master {}", cluster.getMaster().getServerName());
// confirm client access still works
- assertTrue(admin.balance(false));
+
assertTrue(admin.balance(BalanceRequest.defaultInstance()).isBalancerRan());
}
}
@@ -278,4 +278,4 @@ public class TestSeparateClientZKCluster {
TEST_UTIL.waitFor(30000, () -> locator.getAllRegionLocations().size() ==
1);
}
}
-}
\ No newline at end of file
+}
diff --git
a/hbase-server/src/test/java/org/apache/hadoop/hbase/coprocessor/TestMasterObserver.java
b/hbase-server/src/test/java/org/apache/hadoop/hbase/coprocessor/TestMasterObserver.java
index 2cab41b..71a7643 100644
---
a/hbase-server/src/test/java/org/apache/hadoop/hbase/coprocessor/TestMasterObserver.java
+++
b/hbase-server/src/test/java/org/apache/hadoop/hbase/coprocessor/TestMasterObserver.java
@@ -40,6 +40,8 @@ import org.apache.hadoop.hbase.NamespaceDescriptor;
import org.apache.hadoop.hbase.ServerName;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.client.Admin;
+import org.apache.hadoop.hbase.client.BalanceRequest;
+import org.apache.hadoop.hbase.client.BalanceResponse;
import org.apache.hadoop.hbase.client.Connection;
import org.apache.hadoop.hbase.client.ConnectionFactory;
import org.apache.hadoop.hbase.client.MasterSwitchType;
@@ -689,13 +691,14 @@ public class TestMasterObserver {
}
@Override
- public void preBalance(ObserverContext<MasterCoprocessorEnvironment> env)
- throws IOException {
+ public void preBalance(ObserverContext<MasterCoprocessorEnvironment> env,
+ BalanceRequest request) throws IOException {
preBalanceCalled = true;
}
@Override
public void postBalance(ObserverContext<MasterCoprocessorEnvironment> env,
+ BalanceRequest request,
List<RegionPlan> plans) throws IOException {
postBalanceCalled = true;
}
@@ -1159,12 +1162,12 @@ public class TestMasterObserver {
@Override
public void
preBalanceRSGroup(ObserverContext<MasterCoprocessorEnvironment> ctx,
- String groupName) throws IOException {
+ String groupName, BalanceRequest request)
throws IOException {
}
@Override
public void
postBalanceRSGroup(ObserverContext<MasterCoprocessorEnvironment> ctx,
- String groupName, boolean balancerRan) throws IOException {
+ String groupName, BalanceRequest request, BalanceResponse response)
throws IOException {
}
@Override
@@ -1616,7 +1619,7 @@ public class TestMasterObserver {
UTIL.waitUntilNoRegionsInTransition();
// now trigger a balance
master.balanceSwitch(true);
- boolean balanceRun = master.balance();
+ master.balance();
assertTrue("Coprocessor should be called on region rebalancing",
cp.wasBalanceCalled());
} finally {
diff --git
a/hbase-server/src/test/java/org/apache/hadoop/hbase/master/TestMasterDryRunBalancer.java
b/hbase-server/src/test/java/org/apache/hadoop/hbase/master/TestMasterDryRunBalancer.java
new file mode 100644
index 0000000..7300753
--- /dev/null
+++
b/hbase-server/src/test/java/org/apache/hadoop/hbase/master/TestMasterDryRunBalancer.java
@@ -0,0 +1,126 @@
+/**
+ * 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.hadoop.hbase.master;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+import java.io.IOException;
+import org.apache.commons.lang3.Validate;
+import org.apache.hadoop.hbase.client.BalanceRequest;
+import org.apache.hadoop.hbase.HBaseClassTestRule;
+import org.apache.hadoop.hbase.HBaseTestingUtility;
+import org.apache.hadoop.hbase.ServerName;
+import org.apache.hadoop.hbase.TableName;
+import org.apache.hadoop.hbase.Waiter;
+import org.apache.hadoop.hbase.client.BalanceResponse;
+import org.apache.hadoop.hbase.client.RegionInfo;
+import org.apache.hadoop.hbase.regionserver.HRegionServer;
+import org.apache.hadoop.hbase.testclassification.MasterTests;
+import org.apache.hadoop.hbase.testclassification.MediumTests;
+import org.apache.hadoop.hbase.util.Bytes;
+import org.junit.After;
+import org.junit.ClassRule;
+import org.junit.Test;
+import org.junit.experimental.categories.Category;
+import org.mockito.Mockito;
+
+@Category({ MasterTests.class, MediumTests.class})
+public class TestMasterDryRunBalancer {
+ @ClassRule
+ public static final HBaseClassTestRule CLASS_RULE =
+ HBaseClassTestRule.forClass(TestMasterDryRunBalancer.class);
+
+ private static final HBaseTestingUtility TEST_UTIL = new
HBaseTestingUtility();
+ private static final byte[] FAMILYNAME = Bytes.toBytes("fam");
+
+ @After
+ public void shutdown() throws Exception {
+ TEST_UTIL.shutdownMiniCluster();
+ }
+
+ @Test
+ public void testDryRunBalancer() throws Exception {
+ TEST_UTIL.startMiniCluster(2);
+
+ int numRegions = 100;
+ int regionsPerRs = numRegions / 2;
+ TableName tableName = createTable("testDryRunBalancer", numRegions);
+ HMaster master = Mockito.spy(TEST_UTIL.getHBaseCluster().getMaster());
+
+ // dry run should be possible with balancer disabled
+ // disabling it will ensure the chore does not mess with our forced
unbalance below
+ master.balanceSwitch(false);
+ assertFalse(master.isBalancerOn());
+
+ HRegionServer biasedServer = unbalance(master, tableName);
+
+ BalanceResponse response =
master.balance(BalanceRequest.newBuilder().setDryRun(true).build());
+ assertTrue(response.isBalancerRan());
+ // we don't know for sure that it will be exactly half the regions
+ assertTrue(
+ response.getMovesCalculated() >= (regionsPerRs - 1)
+ && response.getMovesCalculated() <= (regionsPerRs + 1));
+ // but we expect no moves executed due to dry run
+ assertEquals(0, response.getMovesExecuted());
+
+ // sanity check that we truly don't try to execute any plans
+ Mockito.verify(master,
Mockito.never()).executeRegionPlansWithThrottling(Mockito.anyList());
+
+ // should still be unbalanced post dry run
+ assertServerContainsAllRegions(biasedServer.getServerName(), tableName);
+
+ TEST_UTIL.deleteTable(tableName);
+ }
+
+ private TableName createTable(String table, int numRegions) throws
IOException {
+ TableName tableName = TableName.valueOf(table);
+ TEST_UTIL.createMultiRegionTable(tableName, FAMILYNAME, numRegions);
+ return tableName;
+ }
+
+
+ private HRegionServer unbalance(HMaster master, TableName tableName) throws
Exception {
+ waitForRegionsToSettle(master);
+
+ HRegionServer biasedServer =
TEST_UTIL.getMiniHBaseCluster().getRegionServer(0);
+
+ for (RegionInfo regionInfo : TEST_UTIL.getAdmin().getRegions(tableName)) {
+ master.move(regionInfo.getEncodedNameAsBytes(),
+ Bytes.toBytes(biasedServer.getServerName().getServerName()));
+ }
+
+ waitForRegionsToSettle(master);
+
+ assertServerContainsAllRegions(biasedServer.getServerName(), tableName);
+
+ return biasedServer;
+ }
+
+ private void assertServerContainsAllRegions(ServerName serverName, TableName
tableName)
+ throws IOException {
+ int numRegions = TEST_UTIL.getAdmin().getRegions(tableName).size();
+ assertEquals(numRegions,
+
TEST_UTIL.getMiniHBaseCluster().getRegionServer(serverName).getRegions(tableName).size());
+ }
+
+ private void waitForRegionsToSettle(HMaster master) {
+ Waiter.waitFor(TEST_UTIL.getConfiguration(), 60_000,
+ () ->
master.getAssignmentManager().getRegionStates().getRegionsInTransitionCount()
<= 0);
+ }
+}
diff --git
a/hbase-server/src/test/java/org/apache/hadoop/hbase/master/procedure/TestProcedurePriority.java
b/hbase-server/src/test/java/org/apache/hadoop/hbase/master/procedure/TestProcedurePriority.java
index fa4c4a5..95211a3 100644
---
a/hbase-server/src/test/java/org/apache/hadoop/hbase/master/procedure/TestProcedurePriority.java
+++
b/hbase-server/src/test/java/org/apache/hadoop/hbase/master/procedure/TestProcedurePriority.java
@@ -28,6 +28,7 @@ import org.apache.hadoop.hbase.HBaseClassTestRule;
import org.apache.hadoop.hbase.HBaseTestingUtility;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.Waiter.ExplainingPredicate;
+import org.apache.hadoop.hbase.client.BalanceRequest;
import org.apache.hadoop.hbase.client.ColumnFamilyDescriptorBuilder;
import org.apache.hadoop.hbase.client.Durability;
import org.apache.hadoop.hbase.client.Get;
@@ -120,7 +121,7 @@ public class TestProcedurePriority {
for (Future<?> future : futures) {
future.get(1, TimeUnit.MINUTES);
}
- UTIL.getAdmin().balance(true);
+
UTIL.getAdmin().balance(BalanceRequest.newBuilder().setIgnoreRegionsInTransition(true).build());
UTIL.waitUntilNoRegionsInTransition();
}
diff --git
a/hbase-server/src/test/java/org/apache/hadoop/hbase/security/access/TestAccessController.java
b/hbase-server/src/test/java/org/apache/hadoop/hbase/security/access/TestAccessController.java
index fd8591e..e54e8d6 100644
---
a/hbase-server/src/test/java/org/apache/hadoop/hbase/security/access/TestAccessController.java
+++
b/hbase-server/src/test/java/org/apache/hadoop/hbase/security/access/TestAccessController.java
@@ -64,6 +64,7 @@ import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.TableNotFoundException;
import org.apache.hadoop.hbase.client.Admin;
import org.apache.hadoop.hbase.client.Append;
+import org.apache.hadoop.hbase.client.BalanceRequest;
import org.apache.hadoop.hbase.client.Connection;
import org.apache.hadoop.hbase.client.ConnectionFactory;
import org.apache.hadoop.hbase.client.Delete;
@@ -776,7 +777,7 @@ public class TestAccessController extends SecureTestUtil {
AccessTestAction action = new AccessTestAction() {
@Override
public Object run() throws Exception {
-
ACCESS_CONTROLLER.preBalance(ObserverContextImpl.createAndPrepare(CP_ENV));
+
ACCESS_CONTROLLER.preBalance(ObserverContextImpl.createAndPrepare(CP_ENV),
BalanceRequest.defaultInstance());
return null;
}
};
diff --git
a/hbase-server/src/test/java/org/apache/hadoop/hbase/security/access/TestWithDisabledAuthorization.java
b/hbase-server/src/test/java/org/apache/hadoop/hbase/security/access/TestWithDisabledAuthorization.java
index 2650702..fb1a060 100644
---
a/hbase-server/src/test/java/org/apache/hadoop/hbase/security/access/TestWithDisabledAuthorization.java
+++
b/hbase-server/src/test/java/org/apache/hadoop/hbase/security/access/TestWithDisabledAuthorization.java
@@ -36,6 +36,7 @@ import org.apache.hadoop.hbase.TableNameTestRule;
import org.apache.hadoop.hbase.TableNotFoundException;
import org.apache.hadoop.hbase.client.Admin;
import org.apache.hadoop.hbase.client.Append;
+import org.apache.hadoop.hbase.client.BalanceRequest;
import org.apache.hadoop.hbase.client.Connection;
import org.apache.hadoop.hbase.client.ConnectionFactory;
import org.apache.hadoop.hbase.client.Delete;
@@ -568,7 +569,7 @@ public class TestWithDisabledAuthorization extends
SecureTestUtil {
verifyAllowed(new AccessTestAction() {
@Override
public Object run() throws Exception {
-
ACCESS_CONTROLLER.preBalance(ObserverContextImpl.createAndPrepare(CP_ENV));
+
ACCESS_CONTROLLER.preBalance(ObserverContextImpl.createAndPrepare(CP_ENV),
BalanceRequest.defaultInstance());
return null;
}
}, SUPERUSER, USER_ADMIN, USER_RW, USER_RO, USER_OWNER, USER_CREATE,
USER_QUAL, USER_NONE);
diff --git a/hbase-shell/src/main/ruby/hbase/admin.rb
b/hbase-shell/src/main/ruby/hbase/admin.rb
index f8ebe5e..c1da4bb 100644
--- a/hbase-shell/src/main/ruby/hbase/admin.rb
+++ b/hbase-shell/src/main/ruby/hbase/admin.rb
@@ -26,6 +26,8 @@ java_import org.apache.hadoop.hbase.TableName
java_import org.apache.hadoop.hbase.client.ColumnFamilyDescriptorBuilder
java_import org.apache.hadoop.hbase.HConstants
+require 'hbase/balancer_utils'
+
# Wrapper for org.apache.hadoop.hbase.client.HBaseAdmin
module Hbase
@@ -206,8 +208,9 @@ module Hbase
#----------------------------------------------------------------------------------------------
# Requests a cluster balance
# Returns true if balancer ran
- def balancer(force)
- @admin.balancer(java.lang.Boolean.valueOf(force))
+ def balancer(*args)
+ request = ::Hbase::BalancerUtils.create_balance_request(args)
+ @admin.balance(request)
end
#----------------------------------------------------------------------------------------------
diff --git a/hbase-shell/src/main/ruby/hbase/balancer_utils.rb
b/hbase-shell/src/main/ruby/hbase/balancer_utils.rb
new file mode 100644
index 0000000..9948c0f
--- /dev/null
+++ b/hbase-shell/src/main/ruby/hbase/balancer_utils.rb
@@ -0,0 +1,57 @@
+#
+#
+# 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.
+#
+
+include Java
+
+java_import org.apache.hadoop.hbase.client.BalanceRequest
+
+module Hbase
+ class BalancerUtils
+ def self.create_balance_request(args)
+ args = args.first if args.first.is_a?(Array) and args.size == 1
+ if args.nil? or args.empty?
+ return BalanceRequest.defaultInstance()
+ elsif args.size > 2
+ raise ArgumentError, "Illegal arguments #{args}. Expected between 0
and 2 arguments, but got #{args.size}."
+ end
+
+ builder = BalanceRequest.newBuilder()
+
+ index = 0
+ args.each do |arg|
+ if !arg.is_a?(String)
+ raise ArgumentError, "Illegal argument in index #{index}: #{arg}.
All arguments must be strings, but got #{arg.class}."
+ end
+
+ case arg
+ when 'force', 'ignore_rit'
+ builder.setIgnoreRegionsInTransition(true)
+ when 'dry_run'
+ builder.setDryRun(true)
+ else
+ raise ArgumentError, "Illegal argument in index #{index}: #{arg}.
Unknown option #{arg}, expected 'force', 'ignore_rit', or 'dry_run'."
+ end
+
+ index += 1
+ end
+
+ return builder.build()
+ end
+ end
+end
diff --git a/hbase-shell/src/main/ruby/hbase/rsgroup_admin.rb
b/hbase-shell/src/main/ruby/hbase/rsgroup_admin.rb
index b25219a..6d08dbc 100644
--- a/hbase-shell/src/main/ruby/hbase/rsgroup_admin.rb
+++ b/hbase-shell/src/main/ruby/hbase/rsgroup_admin.rb
@@ -18,6 +18,8 @@
include Java
java_import org.apache.hadoop.hbase.util.Pair
+require 'hbase/balancer_utils'
+
# Wrapper for org.apache.hadoop.hbase.group.GroupAdminClient
# Which is an API to manage region server groups
@@ -61,8 +63,9 @@ module Hbase
#--------------------------------------------------------------------------
# balance a group
- def balance_rs_group(group_name)
- @admin.balanceRSGroup(group_name)
+ def balance_rs_group(group_name, *args)
+ request = ::Hbase::BalancerUtils.create_balance_request(args)
+ @admin.balanceRSGroup(group_name, request)
end
#--------------------------------------------------------------------------
diff --git a/hbase-shell/src/main/ruby/shell/commands/balance_rsgroup.rb
b/hbase-shell/src/main/ruby/shell/commands/balance_rsgroup.rb
index a223e05..aff9fa7 100644
--- a/hbase-shell/src/main/ruby/shell/commands/balance_rsgroup.rb
+++ b/hbase-shell/src/main/ruby/shell/commands/balance_rsgroup.rb
@@ -22,22 +22,32 @@ module Shell
<<-EOF
Balance a RegionServer group
+Parameter can be "force" or "dry_run":
+ - "dry_run" will run the balancer to generate a plan, but will not actually
execute that plan.
+ This is useful for testing out new balance configurations. See the active
HMaster logs for the results of the dry_run.
+ - "ignore_rit" tells master whether we should force the balancer to run even
if there is region in transition.
+ WARNING: For experts only. Forcing a balance may do more damage than repair
when assignment is confused
+
Example:
hbase> balance_rsgroup 'my_group'
+ hbase> balance_rsgroup 'my_group', 'ignore_rit'
+ hbase> balance_rsgroup 'my_group', 'dry_run'
+ hbase> balance_rsgroup 'my_group', 'dry_run', 'ignore_rit'
EOF
end
- def command(group_name)
+ def command(group_name, *args)
# Returns true if balancer was run, otherwise false.
- ret = rsgroup_admin.balance_rs_group(group_name)
- if ret
- puts 'Ran the balancer.'
+ resp = rsgroup_admin.balance_rs_group(group_name, args)
+ if resp.isBalancerRan
+ formatter.row(["Balancer ran"])
+ formatter.row(["Moves calculated: #{resp.getMovesCalculated}, moves
executed: #{resp.getMovesExecuted}"])
else
- puts "Couldn't run the balancer."
+ formatter.row(["Balancer did not run. See logs for details."])
end
- ret
+ resp.isBalancerRan
end
end
end
diff --git a/hbase-shell/src/main/ruby/shell/commands/balancer.rb
b/hbase-shell/src/main/ruby/shell/commands/balancer.rb
index c4acdc0..d5304e0 100644
--- a/hbase-shell/src/main/ruby/shell/commands/balancer.rb
+++ b/hbase-shell/src/main/ruby/shell/commands/balancer.rb
@@ -22,31 +22,32 @@ module Shell
class Balancer < Command
def help
<<-EOF
-Trigger the cluster balancer. Returns true if balancer ran and was able to
-tell the region servers to unassign all the regions to balance (the
re-assignment itself is async).
-Otherwise false (Will not run if regions in transition).
-Parameter tells master whether we should force balance even if there is region
in transition.
+Trigger the cluster balancer. Returns true if balancer ran, otherwise false
(Will not run if regions in transition).
-WARNING: For experts only. Forcing a balance may do more damage than repair
-when assignment is confused
+Parameter can be "force" or "dry_run":
+ - "dry_run" will run the balancer to generate a plan, but will not actually
execute that plan.
+ This is useful for testing out new balance configurations. See the active
HMaster logs for the results of the dry_run.
+ - "ignore_rit" tells master whether we should force the balancer to run even
if there is region in transition.
+ WARNING: For experts only. Forcing a balance may do more damage than repair
when assignment is confused
Examples:
hbase> balancer
- hbase> balancer "force"
+ hbase> balancer "ignore_rit"
+ hbase> balancer "dry_run"
+ hbase> balancer "dry_run", "ignore_rit"
EOF
end
- def command(force = nil)
- force_balancer = 'false'
- if force == 'force'
- force_balancer = 'true'
- elsif !force.nil?
- raise ArgumentError, "Invalid argument #{force}."
+ def command(*args)
+ resp = admin.balancer(args)
+ if resp.isBalancerRan
+ formatter.row(["Balancer ran"])
+ formatter.row(["Moves calculated: #{resp.getMovesCalculated}, moves
executed: #{resp.getMovesExecuted}"])
+ else
+ formatter.row(["Balancer did not run. See logs for details."])
end
- did_balancer_run = !!admin.balancer(force_balancer)
- formatter.row([did_balancer_run.to_s])
- did_balancer_run
+ resp.isBalancerRan
end
end
end
diff --git a/hbase-shell/src/test/ruby/hbase/admin_test.rb
b/hbase-shell/src/test/ruby/hbase/admin_test.rb
index 19910ca..26793a1 100644
--- a/hbase-shell/src/test/ruby/hbase/admin_test.rb
+++ b/hbase-shell/src/test/ruby/hbase/admin_test.rb
@@ -192,7 +192,13 @@ module Hbase
did_balancer_run = command(:balancer)
assert(did_balancer_run == true)
output = capture_stdout { command(:balancer, 'force') }
- assert(output.include?('true'))
+ assert(output.include?('Balancer ran'))
+
+ command(:balance_switch, false)
+ output = capture_stdout { command(:balancer) }
+ assert(output.include?('Balancer did not run'))
+ output = capture_stdout { command(:balancer, 'dry_run') }
+ assert(output.include?('Balancer ran'))
end
#-------------------------------------------------------------------------------
diff --git a/hbase-shell/src/test/ruby/hbase/balancer_utils_test.rb
b/hbase-shell/src/test/ruby/hbase/balancer_utils_test.rb
new file mode 100644
index 0000000..9d70540
--- /dev/null
+++ b/hbase-shell/src/test/ruby/hbase/balancer_utils_test.rb
@@ -0,0 +1,78 @@
+#
+#
+# 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.
+#
+
+java_import org.apache.hadoop.hbase.client.BalanceRequest
+
+module Hbase
+ class BalancerUtilsTest < Test::Unit::TestCase
+ include TestHelpers
+
+ def create_balance_request(*args)
+ ::Hbase::BalancerUtils.create_balance_request(args)
+ end
+
+ define_test "should raise ArgumentError on unknown string argument" do
+ assert_raise(ArgumentError) do
+ request = create_balance_request('foo')
+ end
+ end
+
+ define_test "should raise ArgumentError on non-array argument" do
+ assert_raise(ArgumentError) do
+ request = create_balance_request({foo: 'bar' })
+ end
+ end
+
+ define_test "should raise ArgumentError on non-string array item" do
+ assert_raise(ArgumentError) do
+ request = create_balance_request('force', true)
+ end
+ end
+
+ define_test "should parse empty args" do
+ request = create_balance_request()
+ assert(!request.isDryRun())
+ assert(!request.isIgnoreRegionsInTransition())
+ end
+
+ define_test "should parse 'force' string" do
+ request = create_balance_request('force')
+ assert(!request.isDryRun())
+ assert(request.isIgnoreRegionsInTransition())
+ end
+
+ define_test "should parse 'ignore_rit' string" do
+ request = create_balance_request('ignore_rit')
+ assert(!request.isDryRun())
+ assert(request.isIgnoreRegionsInTransition())
+ end
+
+ define_test "should parse 'dry_run' string" do
+ request = create_balance_request('dry_run')
+ assert(request.isDryRun())
+ assert(!request.isIgnoreRegionsInTransition())
+ end
+
+ define_test "should parse multiple string args" do
+ request = create_balance_request('dry_run', 'ignore_rit')
+ assert(request.isDryRun())
+ assert(request.isIgnoreRegionsInTransition())
+ end
+ end
+end
diff --git a/hbase-shell/src/test/ruby/shell/rsgroup_shell_test.rb
b/hbase-shell/src/test/ruby/shell/rsgroup_shell_test.rb
index f7c5300..b305c2e 100644
--- a/hbase-shell/src/test/ruby/shell/rsgroup_shell_test.rb
+++ b/hbase-shell/src/test/ruby/shell/rsgroup_shell_test.rb
@@ -90,6 +90,8 @@ module Hbase
# just run it to verify jruby->java api binding
@hbase.rsgroup_admin.balance_rs_group(group_name)
+ @hbase.rsgroup_admin.balance_rs_group(group_name, 'force')
+ @hbase.rsgroup_admin.balance_rs_group(group_name, 'dry_run')
@shell.command(:disable, table_name)
@shell.command(:drop, table_name)
diff --git
a/hbase-thrift/src/main/java/org/apache/hadoop/hbase/thrift2/client/ThriftAdmin.java
b/hbase-thrift/src/main/java/org/apache/hadoop/hbase/thrift2/client/ThriftAdmin.java
index fd551b7..0aa9862 100644
---
a/hbase-thrift/src/main/java/org/apache/hadoop/hbase/thrift2/client/ThriftAdmin.java
+++
b/hbase-thrift/src/main/java/org/apache/hadoop/hbase/thrift2/client/ThriftAdmin.java
@@ -27,6 +27,7 @@ import java.util.concurrent.Future;
import java.util.regex.Pattern;
import org.apache.commons.lang3.NotImplementedException;
import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.hbase.client.BalanceRequest;
import org.apache.hadoop.hbase.CacheEvictionStats;
import org.apache.hadoop.hbase.ClusterMetrics;
import org.apache.hadoop.hbase.HConstants;
@@ -40,6 +41,7 @@ import org.apache.hadoop.hbase.TableExistsException;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.TableNotFoundException;
import org.apache.hadoop.hbase.client.Admin;
+import org.apache.hadoop.hbase.client.BalanceResponse;
import org.apache.hadoop.hbase.client.ColumnFamilyDescriptor;
import org.apache.hadoop.hbase.client.CompactType;
import org.apache.hadoop.hbase.client.CompactionState;
@@ -787,6 +789,11 @@ public class ThriftAdmin implements Admin {
}
@Override
+ public BalanceResponse balance(BalanceRequest request) throws IOException {
+ throw new NotImplementedException("balance not supported in ThriftAdmin");
+ }
+
+ @Override
public boolean isBalancerEnabled() {
throw new NotImplementedException("isBalancerEnabled not supported in
ThriftAdmin");
}
