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From st...@apache.org
Subject git commit: Add admin endpoint for updating the configuration on the regionserver
Date Sat, 18 Oct 2014 20:25:11 GMT
Repository: hbase
Updated Branches:
  refs/heads/branch-1 0dee72466 -> c9f506a29


Add admin endpoint for updating the configuration on the regionserver

Summary: This is a follow up diff for the jira to add the functionality to update configs in an online fashion.

Test Plan: Unit test. This adds an end point on the regionserver. It just tries to call the end point and make sure the call succeeds.

Differential Revision: https://reviews.facebook.net/D24861

Signed-off-by: stack <stack@apache.org>

Conflicts:
	hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestRegionServerOnlineConfigChange.java


Project: http://git-wip-us.apache.org/repos/asf/hbase/repo
Commit: http://git-wip-us.apache.org/repos/asf/hbase/commit/c9f506a2
Tree: http://git-wip-us.apache.org/repos/asf/hbase/tree/c9f506a2
Diff: http://git-wip-us.apache.org/repos/asf/hbase/diff/c9f506a2

Branch: refs/heads/branch-1
Commit: c9f506a2973e0acbd0d2df7b9353c9291f6c94a8
Parents: 0dee724
Author: manukranthk <manukranthk@fb.com>
Authored: Mon Oct 13 18:40:43 2014 -0700
Committer: stack <stack@apache.org>
Committed: Sat Oct 18 16:25:03 2014 -0400

----------------------------------------------------------------------
 .../org/apache/hadoop/hbase/client/Admin.java   |  17 +
 .../apache/hadoop/hbase/client/HBaseAdmin.java  |  17 +
 .../hbase/protobuf/generated/AdminProtos.java   | 827 ++++++++++++++++++-
 hbase-protocol/src/main/protobuf/Admin.proto    |   9 +
 .../hbase/regionserver/HRegionServer.java       |  10 +-
 .../hbase/regionserver/RSRpcServices.java       |  14 +
 .../hbase/client/TestUpdateConfiguration.java   |  49 ++
 .../hadoop/hbase/master/MockRegionServer.java   |   9 +
 .../TestRegionServerOnlineConfigChange.java     |   4 +-
 9 files changed, 926 insertions(+), 30 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/hbase/blob/c9f506a2/hbase-client/src/main/java/org/apache/hadoop/hbase/client/Admin.java
----------------------------------------------------------------------
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 15b8c6c..a8fbbe3 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
@@ -1258,4 +1258,21 @@ public interface Admin extends Abortable, Closeable {
    * @return A RegionServerCoprocessorRpcChannel instance
    */
   CoprocessorRpcChannel coprocessorService(ServerName sn);
+  
+
+  /**
+   * Update the configuration and trigger an online config change
+   * on the regionserver
+   * @param server : The server whose config needs to be updated.
+   * @throws IOException
+   */
+  void updateConfiguration(ServerName server) throws IOException;
+
+
+  /**
+   * Update the configuration and trigger an online config change
+   * on all the regionservers
+   * @throws IOException
+   */
+  void updateConfiguration() throws IOException;
 }

http://git-wip-us.apache.org/repos/asf/hbase/blob/c9f506a2/hbase-client/src/main/java/org/apache/hadoop/hbase/client/HBaseAdmin.java
----------------------------------------------------------------------
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 5016f97..3893035 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
@@ -84,6 +84,7 @@ import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.GetRegionInfoRespo
 import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.RollWALWriterRequest;
 import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.RollWALWriterResponse;
 import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.StopServerRequest;
+import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationRequest;
 import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.ClientService;
 import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.ScanRequest;
 import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.ScanResponse;
@@ -3680,5 +3681,21 @@ public class HBaseAdmin implements Admin {
   public CoprocessorRpcChannel coprocessorService(ServerName sn) {
     return new RegionServerCoprocessorRpcChannel(connection, sn);
   }
+  
+  @Override
+  public void updateConfiguration(ServerName server) throws IOException {
+    try {
+      this.connection.getAdmin(server).updateConfiguration(null,
+        UpdateConfigurationRequest.getDefaultInstance());
+    } catch (ServiceException e) {
+      throw ProtobufUtil.getRemoteException(e);
+    }
+  }
 
+  @Override
+  public void updateConfiguration() throws IOException {
+    for (ServerName server : this.getClusterStatus().getServers()) {
+      updateConfiguration(server);
+    }
+  }
 }

http://git-wip-us.apache.org/repos/asf/hbase/blob/c9f506a2/hbase-protocol/src/main/java/org/apache/hadoop/hbase/protobuf/generated/AdminProtos.java
----------------------------------------------------------------------
diff --git a/hbase-protocol/src/main/java/org/apache/hadoop/hbase/protobuf/generated/AdminProtos.java b/hbase-protocol/src/main/java/org/apache/hadoop/hbase/protobuf/generated/AdminProtos.java
index 636e51f..9ffe0fd 100644
--- a/hbase-protocol/src/main/java/org/apache/hadoop/hbase/protobuf/generated/AdminProtos.java
+++ b/hbase-protocol/src/main/java/org/apache/hadoop/hbase/protobuf/generated/AdminProtos.java
@@ -19879,6 +19879,682 @@ public final class AdminProtos {
     // @@protoc_insertion_point(class_scope:GetServerInfoResponse)
   }
 
+  public interface UpdateConfigurationRequestOrBuilder
+      extends com.google.protobuf.MessageOrBuilder {
+  }
+  /**
+   * Protobuf type {@code UpdateConfigurationRequest}
+   */
+  public static final class UpdateConfigurationRequest extends
+      com.google.protobuf.GeneratedMessage
+      implements UpdateConfigurationRequestOrBuilder {
+    // Use UpdateConfigurationRequest.newBuilder() to construct.
+    private UpdateConfigurationRequest(com.google.protobuf.GeneratedMessage.Builder<?> builder) {
+      super(builder);
+      this.unknownFields = builder.getUnknownFields();
+    }
+    private UpdateConfigurationRequest(boolean noInit) { this.unknownFields = com.google.protobuf.UnknownFieldSet.getDefaultInstance(); }
+
+    private static final UpdateConfigurationRequest defaultInstance;
+    public static UpdateConfigurationRequest getDefaultInstance() {
+      return defaultInstance;
+    }
+
+    public UpdateConfigurationRequest getDefaultInstanceForType() {
+      return defaultInstance;
+    }
+
+    private final com.google.protobuf.UnknownFieldSet unknownFields;
+    @java.lang.Override
+    public final com.google.protobuf.UnknownFieldSet
+        getUnknownFields() {
+      return this.unknownFields;
+    }
+    private UpdateConfigurationRequest(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      initFields();
+      com.google.protobuf.UnknownFieldSet.Builder unknownFields =
+          com.google.protobuf.UnknownFieldSet.newBuilder();
+      try {
+        boolean done = false;
+        while (!done) {
+          int tag = input.readTag();
+          switch (tag) {
+            case 0:
+              done = true;
+              break;
+            default: {
+              if (!parseUnknownField(input, unknownFields,
+                                     extensionRegistry, tag)) {
+                done = true;
+              }
+              break;
+            }
+          }
+        }
+      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+        throw e.setUnfinishedMessage(this);
+      } catch (java.io.IOException e) {
+        throw new com.google.protobuf.InvalidProtocolBufferException(
+            e.getMessage()).setUnfinishedMessage(this);
+      } finally {
+        this.unknownFields = unknownFields.build();
+        makeExtensionsImmutable();
+      }
+    }
+    public static final com.google.protobuf.Descriptors.Descriptor
+        getDescriptor() {
+      return org.apache.hadoop.hbase.protobuf.generated.AdminProtos.internal_static_UpdateConfigurationRequest_descriptor;
+    }
+
+    protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
+        internalGetFieldAccessorTable() {
+      return org.apache.hadoop.hbase.protobuf.generated.AdminProtos.internal_static_UpdateConfigurationRequest_fieldAccessorTable
+          .ensureFieldAccessorsInitialized(
+              org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationRequest.class, org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationRequest.Builder.class);
+    }
+
+    public static com.google.protobuf.Parser<UpdateConfigurationRequest> PARSER =
+        new com.google.protobuf.AbstractParser<UpdateConfigurationRequest>() {
+      public UpdateConfigurationRequest parsePartialFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws com.google.protobuf.InvalidProtocolBufferException {
+        return new UpdateConfigurationRequest(input, extensionRegistry);
+      }
+    };
+
+    @java.lang.Override
+    public com.google.protobuf.Parser<UpdateConfigurationRequest> getParserForType() {
+      return PARSER;
+    }
+
+    private void initFields() {
+    }
+    private byte memoizedIsInitialized = -1;
+    public final boolean isInitialized() {
+      byte isInitialized = memoizedIsInitialized;
+      if (isInitialized != -1) return isInitialized == 1;
+
+      memoizedIsInitialized = 1;
+      return true;
+    }
+
+    public void writeTo(com.google.protobuf.CodedOutputStream output)
+                        throws java.io.IOException {
+      getSerializedSize();
+      getUnknownFields().writeTo(output);
+    }
+
+    private int memoizedSerializedSize = -1;
+    public int getSerializedSize() {
+      int size = memoizedSerializedSize;
+      if (size != -1) return size;
+
+      size = 0;
+      size += getUnknownFields().getSerializedSize();
+      memoizedSerializedSize = size;
+      return size;
+    }
+
+    private static final long serialVersionUID = 0L;
+    @java.lang.Override
+    protected java.lang.Object writeReplace()
+        throws java.io.ObjectStreamException {
+      return super.writeReplace();
+    }
+
+    @java.lang.Override
+    public boolean equals(final java.lang.Object obj) {
+      if (obj == this) {
+       return true;
+      }
+      if (!(obj instanceof org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationRequest)) {
+        return super.equals(obj);
+      }
+      org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationRequest other = (org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationRequest) obj;
+
+      boolean result = true;
+      result = result &&
+          getUnknownFields().equals(other.getUnknownFields());
+      return result;
+    }
+
+    private int memoizedHashCode = 0;
+    @java.lang.Override
+    public int hashCode() {
+      if (memoizedHashCode != 0) {
+        return memoizedHashCode;
+      }
+      int hash = 41;
+      hash = (19 * hash) + getDescriptorForType().hashCode();
+      hash = (29 * hash) + getUnknownFields().hashCode();
+      memoizedHashCode = hash;
+      return hash;
+    }
+
+    public static org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationRequest parseFrom(
+        com.google.protobuf.ByteString data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationRequest parseFrom(
+        com.google.protobuf.ByteString data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationRequest parseFrom(byte[] data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationRequest parseFrom(
+        byte[] data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationRequest parseFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input);
+    }
+    public static org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationRequest parseFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input, extensionRegistry);
+    }
+    public static org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationRequest parseDelimitedFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return PARSER.parseDelimitedFrom(input);
+    }
+    public static org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationRequest parseDelimitedFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return PARSER.parseDelimitedFrom(input, extensionRegistry);
+    }
+    public static org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationRequest parseFrom(
+        com.google.protobuf.CodedInputStream input)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input);
+    }
+    public static org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationRequest parseFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input, extensionRegistry);
+    }
+
+    public static Builder newBuilder() { return Builder.create(); }
+    public Builder newBuilderForType() { return newBuilder(); }
+    public static Builder newBuilder(org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationRequest prototype) {
+      return newBuilder().mergeFrom(prototype);
+    }
+    public Builder toBuilder() { return newBuilder(this); }
+
+    @java.lang.Override
+    protected Builder newBuilderForType(
+        com.google.protobuf.GeneratedMessage.BuilderParent parent) {
+      Builder builder = new Builder(parent);
+      return builder;
+    }
+    /**
+     * Protobuf type {@code UpdateConfigurationRequest}
+     */
+    public static final class Builder extends
+        com.google.protobuf.GeneratedMessage.Builder<Builder>
+       implements org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationRequestOrBuilder {
+      public static final com.google.protobuf.Descriptors.Descriptor
+          getDescriptor() {
+        return org.apache.hadoop.hbase.protobuf.generated.AdminProtos.internal_static_UpdateConfigurationRequest_descriptor;
+      }
+
+      protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
+          internalGetFieldAccessorTable() {
+        return org.apache.hadoop.hbase.protobuf.generated.AdminProtos.internal_static_UpdateConfigurationRequest_fieldAccessorTable
+            .ensureFieldAccessorsInitialized(
+                org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationRequest.class, org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationRequest.Builder.class);
+      }
+
+      // Construct using org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationRequest.newBuilder()
+      private Builder() {
+        maybeForceBuilderInitialization();
+      }
+
+      private Builder(
+          com.google.protobuf.GeneratedMessage.BuilderParent parent) {
+        super(parent);
+        maybeForceBuilderInitialization();
+      }
+      private void maybeForceBuilderInitialization() {
+        if (com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders) {
+        }
+      }
+      private static Builder create() {
+        return new Builder();
+      }
+
+      public Builder clear() {
+        super.clear();
+        return this;
+      }
+
+      public Builder clone() {
+        return create().mergeFrom(buildPartial());
+      }
+
+      public com.google.protobuf.Descriptors.Descriptor
+          getDescriptorForType() {
+        return org.apache.hadoop.hbase.protobuf.generated.AdminProtos.internal_static_UpdateConfigurationRequest_descriptor;
+      }
+
+      public org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationRequest getDefaultInstanceForType() {
+        return org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationRequest.getDefaultInstance();
+      }
+
+      public org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationRequest build() {
+        org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationRequest result = buildPartial();
+        if (!result.isInitialized()) {
+          throw newUninitializedMessageException(result);
+        }
+        return result;
+      }
+
+      public org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationRequest buildPartial() {
+        org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationRequest result = new org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationRequest(this);
+        onBuilt();
+        return result;
+      }
+
+      public Builder mergeFrom(com.google.protobuf.Message other) {
+        if (other instanceof org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationRequest) {
+          return mergeFrom((org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationRequest)other);
+        } else {
+          super.mergeFrom(other);
+          return this;
+        }
+      }
+
+      public Builder mergeFrom(org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationRequest other) {
+        if (other == org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationRequest.getDefaultInstance()) return this;
+        this.mergeUnknownFields(other.getUnknownFields());
+        return this;
+      }
+
+      public final boolean isInitialized() {
+        return true;
+      }
+
+      public Builder mergeFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws java.io.IOException {
+        org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationRequest parsedMessage = null;
+        try {
+          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+          parsedMessage = (org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationRequest) e.getUnfinishedMessage();
+          throw e;
+        } finally {
+          if (parsedMessage != null) {
+            mergeFrom(parsedMessage);
+          }
+        }
+        return this;
+      }
+
+      // @@protoc_insertion_point(builder_scope:UpdateConfigurationRequest)
+    }
+
+    static {
+      defaultInstance = new UpdateConfigurationRequest(true);
+      defaultInstance.initFields();
+    }
+
+    // @@protoc_insertion_point(class_scope:UpdateConfigurationRequest)
+  }
+
+  public interface UpdateConfigurationResponseOrBuilder
+      extends com.google.protobuf.MessageOrBuilder {
+  }
+  /**
+   * Protobuf type {@code UpdateConfigurationResponse}
+   */
+  public static final class UpdateConfigurationResponse extends
+      com.google.protobuf.GeneratedMessage
+      implements UpdateConfigurationResponseOrBuilder {
+    // Use UpdateConfigurationResponse.newBuilder() to construct.
+    private UpdateConfigurationResponse(com.google.protobuf.GeneratedMessage.Builder<?> builder) {
+      super(builder);
+      this.unknownFields = builder.getUnknownFields();
+    }
+    private UpdateConfigurationResponse(boolean noInit) { this.unknownFields = com.google.protobuf.UnknownFieldSet.getDefaultInstance(); }
+
+    private static final UpdateConfigurationResponse defaultInstance;
+    public static UpdateConfigurationResponse getDefaultInstance() {
+      return defaultInstance;
+    }
+
+    public UpdateConfigurationResponse getDefaultInstanceForType() {
+      return defaultInstance;
+    }
+
+    private final com.google.protobuf.UnknownFieldSet unknownFields;
+    @java.lang.Override
+    public final com.google.protobuf.UnknownFieldSet
+        getUnknownFields() {
+      return this.unknownFields;
+    }
+    private UpdateConfigurationResponse(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      initFields();
+      com.google.protobuf.UnknownFieldSet.Builder unknownFields =
+          com.google.protobuf.UnknownFieldSet.newBuilder();
+      try {
+        boolean done = false;
+        while (!done) {
+          int tag = input.readTag();
+          switch (tag) {
+            case 0:
+              done = true;
+              break;
+            default: {
+              if (!parseUnknownField(input, unknownFields,
+                                     extensionRegistry, tag)) {
+                done = true;
+              }
+              break;
+            }
+          }
+        }
+      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+        throw e.setUnfinishedMessage(this);
+      } catch (java.io.IOException e) {
+        throw new com.google.protobuf.InvalidProtocolBufferException(
+            e.getMessage()).setUnfinishedMessage(this);
+      } finally {
+        this.unknownFields = unknownFields.build();
+        makeExtensionsImmutable();
+      }
+    }
+    public static final com.google.protobuf.Descriptors.Descriptor
+        getDescriptor() {
+      return org.apache.hadoop.hbase.protobuf.generated.AdminProtos.internal_static_UpdateConfigurationResponse_descriptor;
+    }
+
+    protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
+        internalGetFieldAccessorTable() {
+      return org.apache.hadoop.hbase.protobuf.generated.AdminProtos.internal_static_UpdateConfigurationResponse_fieldAccessorTable
+          .ensureFieldAccessorsInitialized(
+              org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationResponse.class, org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationResponse.Builder.class);
+    }
+
+    public static com.google.protobuf.Parser<UpdateConfigurationResponse> PARSER =
+        new com.google.protobuf.AbstractParser<UpdateConfigurationResponse>() {
+      public UpdateConfigurationResponse parsePartialFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws com.google.protobuf.InvalidProtocolBufferException {
+        return new UpdateConfigurationResponse(input, extensionRegistry);
+      }
+    };
+
+    @java.lang.Override
+    public com.google.protobuf.Parser<UpdateConfigurationResponse> getParserForType() {
+      return PARSER;
+    }
+
+    private void initFields() {
+    }
+    private byte memoizedIsInitialized = -1;
+    public final boolean isInitialized() {
+      byte isInitialized = memoizedIsInitialized;
+      if (isInitialized != -1) return isInitialized == 1;
+
+      memoizedIsInitialized = 1;
+      return true;
+    }
+
+    public void writeTo(com.google.protobuf.CodedOutputStream output)
+                        throws java.io.IOException {
+      getSerializedSize();
+      getUnknownFields().writeTo(output);
+    }
+
+    private int memoizedSerializedSize = -1;
+    public int getSerializedSize() {
+      int size = memoizedSerializedSize;
+      if (size != -1) return size;
+
+      size = 0;
+      size += getUnknownFields().getSerializedSize();
+      memoizedSerializedSize = size;
+      return size;
+    }
+
+    private static final long serialVersionUID = 0L;
+    @java.lang.Override
+    protected java.lang.Object writeReplace()
+        throws java.io.ObjectStreamException {
+      return super.writeReplace();
+    }
+
+    @java.lang.Override
+    public boolean equals(final java.lang.Object obj) {
+      if (obj == this) {
+       return true;
+      }
+      if (!(obj instanceof org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationResponse)) {
+        return super.equals(obj);
+      }
+      org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationResponse other = (org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationResponse) obj;
+
+      boolean result = true;
+      result = result &&
+          getUnknownFields().equals(other.getUnknownFields());
+      return result;
+    }
+
+    private int memoizedHashCode = 0;
+    @java.lang.Override
+    public int hashCode() {
+      if (memoizedHashCode != 0) {
+        return memoizedHashCode;
+      }
+      int hash = 41;
+      hash = (19 * hash) + getDescriptorForType().hashCode();
+      hash = (29 * hash) + getUnknownFields().hashCode();
+      memoizedHashCode = hash;
+      return hash;
+    }
+
+    public static org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationResponse parseFrom(
+        com.google.protobuf.ByteString data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationResponse parseFrom(
+        com.google.protobuf.ByteString data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationResponse parseFrom(byte[] data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationResponse parseFrom(
+        byte[] data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationResponse parseFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input);
+    }
+    public static org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationResponse parseFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input, extensionRegistry);
+    }
+    public static org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationResponse parseDelimitedFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return PARSER.parseDelimitedFrom(input);
+    }
+    public static org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationResponse parseDelimitedFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return PARSER.parseDelimitedFrom(input, extensionRegistry);
+    }
+    public static org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationResponse parseFrom(
+        com.google.protobuf.CodedInputStream input)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input);
+    }
+    public static org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationResponse parseFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input, extensionRegistry);
+    }
+
+    public static Builder newBuilder() { return Builder.create(); }
+    public Builder newBuilderForType() { return newBuilder(); }
+    public static Builder newBuilder(org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationResponse prototype) {
+      return newBuilder().mergeFrom(prototype);
+    }
+    public Builder toBuilder() { return newBuilder(this); }
+
+    @java.lang.Override
+    protected Builder newBuilderForType(
+        com.google.protobuf.GeneratedMessage.BuilderParent parent) {
+      Builder builder = new Builder(parent);
+      return builder;
+    }
+    /**
+     * Protobuf type {@code UpdateConfigurationResponse}
+     */
+    public static final class Builder extends
+        com.google.protobuf.GeneratedMessage.Builder<Builder>
+       implements org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationResponseOrBuilder {
+      public static final com.google.protobuf.Descriptors.Descriptor
+          getDescriptor() {
+        return org.apache.hadoop.hbase.protobuf.generated.AdminProtos.internal_static_UpdateConfigurationResponse_descriptor;
+      }
+
+      protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
+          internalGetFieldAccessorTable() {
+        return org.apache.hadoop.hbase.protobuf.generated.AdminProtos.internal_static_UpdateConfigurationResponse_fieldAccessorTable
+            .ensureFieldAccessorsInitialized(
+                org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationResponse.class, org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationResponse.Builder.class);
+      }
+
+      // Construct using org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationResponse.newBuilder()
+      private Builder() {
+        maybeForceBuilderInitialization();
+      }
+
+      private Builder(
+          com.google.protobuf.GeneratedMessage.BuilderParent parent) {
+        super(parent);
+        maybeForceBuilderInitialization();
+      }
+      private void maybeForceBuilderInitialization() {
+        if (com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders) {
+        }
+      }
+      private static Builder create() {
+        return new Builder();
+      }
+
+      public Builder clear() {
+        super.clear();
+        return this;
+      }
+
+      public Builder clone() {
+        return create().mergeFrom(buildPartial());
+      }
+
+      public com.google.protobuf.Descriptors.Descriptor
+          getDescriptorForType() {
+        return org.apache.hadoop.hbase.protobuf.generated.AdminProtos.internal_static_UpdateConfigurationResponse_descriptor;
+      }
+
+      public org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationResponse getDefaultInstanceForType() {
+        return org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationResponse.getDefaultInstance();
+      }
+
+      public org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationResponse build() {
+        org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationResponse result = buildPartial();
+        if (!result.isInitialized()) {
+          throw newUninitializedMessageException(result);
+        }
+        return result;
+      }
+
+      public org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationResponse buildPartial() {
+        org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationResponse result = new org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationResponse(this);
+        onBuilt();
+        return result;
+      }
+
+      public Builder mergeFrom(com.google.protobuf.Message other) {
+        if (other instanceof org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationResponse) {
+          return mergeFrom((org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationResponse)other);
+        } else {
+          super.mergeFrom(other);
+          return this;
+        }
+      }
+
+      public Builder mergeFrom(org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationResponse other) {
+        if (other == org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationResponse.getDefaultInstance()) return this;
+        this.mergeUnknownFields(other.getUnknownFields());
+        return this;
+      }
+
+      public final boolean isInitialized() {
+        return true;
+      }
+
+      public Builder mergeFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws java.io.IOException {
+        org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationResponse parsedMessage = null;
+        try {
+          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+          parsedMessage = (org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationResponse) e.getUnfinishedMessage();
+          throw e;
+        } finally {
+          if (parsedMessage != null) {
+            mergeFrom(parsedMessage);
+          }
+        }
+        return this;
+      }
+
+      // @@protoc_insertion_point(builder_scope:UpdateConfigurationResponse)
+    }
+
+    static {
+      defaultInstance = new UpdateConfigurationResponse(true);
+      defaultInstance.initFields();
+    }
+
+    // @@protoc_insertion_point(class_scope:UpdateConfigurationResponse)
+  }
+
   /**
    * Protobuf service {@code AdminService}
    */
@@ -20007,6 +20683,14 @@ public final class AdminProtos {
           org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateFavoredNodesRequest request,
           com.google.protobuf.RpcCallback<org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateFavoredNodesResponse> done);
 
+      /**
+       * <code>rpc UpdateConfiguration(.UpdateConfigurationRequest) returns (.UpdateConfigurationResponse);</code>
+       */
+      public abstract void updateConfiguration(
+          com.google.protobuf.RpcController controller,
+          org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationRequest request,
+          com.google.protobuf.RpcCallback<org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationResponse> done);
+
     }
 
     public static com.google.protobuf.Service newReflectiveService(
@@ -20132,6 +20816,14 @@ public final class AdminProtos {
           impl.updateFavoredNodes(controller, request, done);
         }
 
+        @java.lang.Override
+        public  void updateConfiguration(
+            com.google.protobuf.RpcController controller,
+            org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationRequest request,
+            com.google.protobuf.RpcCallback<org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationResponse> done) {
+          impl.updateConfiguration(controller, request, done);
+        }
+
       };
     }
 
@@ -20184,6 +20876,8 @@ public final class AdminProtos {
               return impl.stopServer(controller, (org.apache.hadoop.hbase.protobuf.generated.AdminProtos.StopServerRequest)request);
             case 14:
               return impl.updateFavoredNodes(controller, (org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateFavoredNodesRequest)request);
+            case 15:
+              return impl.updateConfiguration(controller, (org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationRequest)request);
             default:
               throw new java.lang.AssertionError("Can't get here.");
           }
@@ -20228,6 +20922,8 @@ public final class AdminProtos {
               return org.apache.hadoop.hbase.protobuf.generated.AdminProtos.StopServerRequest.getDefaultInstance();
             case 14:
               return org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateFavoredNodesRequest.getDefaultInstance();
+            case 15:
+              return org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationRequest.getDefaultInstance();
             default:
               throw new java.lang.AssertionError("Can't get here.");
           }
@@ -20272,6 +20968,8 @@ public final class AdminProtos {
               return org.apache.hadoop.hbase.protobuf.generated.AdminProtos.StopServerResponse.getDefaultInstance();
             case 14:
               return org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateFavoredNodesResponse.getDefaultInstance();
+            case 15:
+              return org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationResponse.getDefaultInstance();
             default:
               throw new java.lang.AssertionError("Can't get here.");
           }
@@ -20400,6 +21098,14 @@ public final class AdminProtos {
         org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateFavoredNodesRequest request,
         com.google.protobuf.RpcCallback<org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateFavoredNodesResponse> done);
 
+    /**
+     * <code>rpc UpdateConfiguration(.UpdateConfigurationRequest) returns (.UpdateConfigurationResponse);</code>
+     */
+    public abstract void updateConfiguration(
+        com.google.protobuf.RpcController controller,
+        org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationRequest request,
+        com.google.protobuf.RpcCallback<org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationResponse> done);
+
     public static final
         com.google.protobuf.Descriptors.ServiceDescriptor
         getDescriptor() {
@@ -20497,6 +21203,11 @@ public final class AdminProtos {
             com.google.protobuf.RpcUtil.<org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateFavoredNodesResponse>specializeCallback(
               done));
           return;
+        case 15:
+          this.updateConfiguration(controller, (org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationRequest)request,
+            com.google.protobuf.RpcUtil.<org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationResponse>specializeCallback(
+              done));
+          return;
         default:
           throw new java.lang.AssertionError("Can't get here.");
       }
@@ -20541,6 +21252,8 @@ public final class AdminProtos {
           return org.apache.hadoop.hbase.protobuf.generated.AdminProtos.StopServerRequest.getDefaultInstance();
         case 14:
           return org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateFavoredNodesRequest.getDefaultInstance();
+        case 15:
+          return org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationRequest.getDefaultInstance();
         default:
           throw new java.lang.AssertionError("Can't get here.");
       }
@@ -20585,6 +21298,8 @@ public final class AdminProtos {
           return org.apache.hadoop.hbase.protobuf.generated.AdminProtos.StopServerResponse.getDefaultInstance();
         case 14:
           return org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateFavoredNodesResponse.getDefaultInstance();
+        case 15:
+          return org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationResponse.getDefaultInstance();
         default:
           throw new java.lang.AssertionError("Can't get here.");
       }
@@ -20830,6 +21545,21 @@ public final class AdminProtos {
             org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateFavoredNodesResponse.class,
             org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateFavoredNodesResponse.getDefaultInstance()));
       }
+
+      public  void updateConfiguration(
+          com.google.protobuf.RpcController controller,
+          org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationRequest request,
+          com.google.protobuf.RpcCallback<org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationResponse> done) {
+        channel.callMethod(
+          getDescriptor().getMethods().get(15),
+          controller,
+          request,
+          org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationResponse.getDefaultInstance(),
+          com.google.protobuf.RpcUtil.generalizeCallback(
+            done,
+            org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationResponse.class,
+            org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationResponse.getDefaultInstance()));
+      }
     }
 
     public static BlockingInterface newBlockingStub(
@@ -20912,6 +21642,11 @@ public final class AdminProtos {
           com.google.protobuf.RpcController controller,
           org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateFavoredNodesRequest request)
           throws com.google.protobuf.ServiceException;
+
+      public org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationResponse updateConfiguration(
+          com.google.protobuf.RpcController controller,
+          org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationRequest request)
+          throws com.google.protobuf.ServiceException;
     }
 
     private static final class BlockingStub implements BlockingInterface {
@@ -21100,6 +21835,18 @@ public final class AdminProtos {
           org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateFavoredNodesResponse.getDefaultInstance());
       }
 
+
+      public org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationResponse updateConfiguration(
+          com.google.protobuf.RpcController controller,
+          org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationRequest request)
+          throws com.google.protobuf.ServiceException {
+        return (org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationResponse) channel.callBlockingMethod(
+          getDescriptor().getMethods().get(15),
+          controller,
+          request,
+          org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationResponse.getDefaultInstance());
+      }
+
     }
 
     // @@protoc_insertion_point(class_scope:AdminService)
@@ -21265,6 +22012,16 @@ public final class AdminProtos {
   private static
     com.google.protobuf.GeneratedMessage.FieldAccessorTable
       internal_static_GetServerInfoResponse_fieldAccessorTable;
+  private static com.google.protobuf.Descriptors.Descriptor
+    internal_static_UpdateConfigurationRequest_descriptor;
+  private static
+    com.google.protobuf.GeneratedMessage.FieldAccessorTable
+      internal_static_UpdateConfigurationRequest_fieldAccessorTable;
+  private static com.google.protobuf.Descriptors.Descriptor
+    internal_static_UpdateConfigurationResponse_descriptor;
+  private static
+    com.google.protobuf.GeneratedMessage.FieldAccessorTable
+      internal_static_UpdateConfigurationResponse_fieldAccessorTable;
 
   public static com.google.protobuf.Descriptors.FileDescriptor
       getDescriptor() {
@@ -21333,33 +22090,37 @@ public final class AdminProtos {
       "e\"\026\n\024GetServerInfoRequest\"B\n\nServerInfo\022" +
       " \n\013server_name\030\001 \002(\0132\013.ServerName\022\022\n\nweb" +
       "ui_port\030\002 \001(\r\"9\n\025GetServerInfoResponse\022 " +
-      "\n\013server_info\030\001 \002(\0132\013.ServerInfo2\306\007\n\014Adm",
-      "inService\022>\n\rGetRegionInfo\022\025.GetRegionIn" +
-      "foRequest\032\026.GetRegionInfoResponse\022;\n\014Get" +
-      "StoreFile\022\024.GetStoreFileRequest\032\025.GetSto" +
-      "reFileResponse\022D\n\017GetOnlineRegion\022\027.GetO" +
-      "nlineRegionRequest\032\030.GetOnlineRegionResp" +
-      "onse\0225\n\nOpenRegion\022\022.OpenRegionRequest\032\023" +
-      ".OpenRegionResponse\0228\n\013CloseRegion\022\023.Clo" +
-      "seRegionRequest\032\024.CloseRegionResponse\0228\n" +
-      "\013FlushRegion\022\023.FlushRegionRequest\032\024.Flus" +
-      "hRegionResponse\0228\n\013SplitRegion\022\023.SplitRe",
-      "gionRequest\032\024.SplitRegionResponse\022>\n\rCom" +
-      "pactRegion\022\025.CompactRegionRequest\032\026.Comp" +
-      "actRegionResponse\022;\n\014MergeRegions\022\024.Merg" +
-      "eRegionsRequest\032\025.MergeRegionsResponse\022J" +
-      "\n\021ReplicateWALEntry\022\031.ReplicateWALEntryR" +
-      "equest\032\032.ReplicateWALEntryResponse\022?\n\006Re" +
-      "play\022\031.ReplicateWALEntryRequest\032\032.Replic" +
-      "ateWALEntryResponse\022>\n\rRollWALWriter\022\025.R" +
-      "ollWALWriterRequest\032\026.RollWALWriterRespo" +
-      "nse\022>\n\rGetServerInfo\022\025.GetServerInfoRequ",
-      "est\032\026.GetServerInfoResponse\0225\n\nStopServe" +
-      "r\022\022.StopServerRequest\032\023.StopServerRespon" +
-      "se\022M\n\022UpdateFavoredNodes\022\032.UpdateFavored" +
-      "NodesRequest\032\033.UpdateFavoredNodesRespons" +
-      "eBA\n*org.apache.hadoop.hbase.protobuf.ge" +
-      "neratedB\013AdminProtosH\001\210\001\001\240\001\001"
+      "\n\013server_info\030\001 \002(\0132\013.ServerInfo\"\034\n\032Upda",
+      "teConfigurationRequest\"\035\n\033UpdateConfigur" +
+      "ationResponse2\230\010\n\014AdminService\022>\n\rGetReg" +
+      "ionInfo\022\025.GetRegionInfoRequest\032\026.GetRegi" +
+      "onInfoResponse\022;\n\014GetStoreFile\022\024.GetStor" +
+      "eFileRequest\032\025.GetStoreFileResponse\022D\n\017G" +
+      "etOnlineRegion\022\027.GetOnlineRegionRequest\032" +
+      "\030.GetOnlineRegionResponse\0225\n\nOpenRegion\022" +
+      "\022.OpenRegionRequest\032\023.OpenRegionResponse" +
+      "\0228\n\013CloseRegion\022\023.CloseRegionRequest\032\024.C" +
+      "loseRegionResponse\0228\n\013FlushRegion\022\023.Flus",
+      "hRegionRequest\032\024.FlushRegionResponse\0228\n\013" +
+      "SplitRegion\022\023.SplitRegionRequest\032\024.Split" +
+      "RegionResponse\022>\n\rCompactRegion\022\025.Compac" +
+      "tRegionRequest\032\026.CompactRegionResponse\022;" +
+      "\n\014MergeRegions\022\024.MergeRegionsRequest\032\025.M" +
+      "ergeRegionsResponse\022J\n\021ReplicateWALEntry" +
+      "\022\031.ReplicateWALEntryRequest\032\032.ReplicateW" +
+      "ALEntryResponse\022?\n\006Replay\022\031.ReplicateWAL" +
+      "EntryRequest\032\032.ReplicateWALEntryResponse" +
+      "\022>\n\rRollWALWriter\022\025.RollWALWriterRequest",
+      "\032\026.RollWALWriterResponse\022>\n\rGetServerInf" +
+      "o\022\025.GetServerInfoRequest\032\026.GetServerInfo" +
+      "Response\0225\n\nStopServer\022\022.StopServerReque" +
+      "st\032\023.StopServerResponse\022M\n\022UpdateFavored" +
+      "Nodes\022\032.UpdateFavoredNodesRequest\032\033.Upda" +
+      "teFavoredNodesResponse\022P\n\023UpdateConfigur" +
+      "ation\022\033.UpdateConfigurationRequest\032\034.Upd" +
+      "ateConfigurationResponseBA\n*org.apache.h" +
+      "adoop.hbase.protobuf.generatedB\013AdminPro" +
+      "tosH\001\210\001\001\240\001\001"
     };
     com.google.protobuf.Descriptors.FileDescriptor.InternalDescriptorAssigner assigner =
       new com.google.protobuf.Descriptors.FileDescriptor.InternalDescriptorAssigner() {
@@ -21558,6 +22319,18 @@ public final class AdminProtos {
             com.google.protobuf.GeneratedMessage.FieldAccessorTable(
               internal_static_GetServerInfoResponse_descriptor,
               new java.lang.String[] { "ServerInfo", });
+          internal_static_UpdateConfigurationRequest_descriptor =
+            getDescriptor().getMessageTypes().get(30);
+          internal_static_UpdateConfigurationRequest_fieldAccessorTable = new
+            com.google.protobuf.GeneratedMessage.FieldAccessorTable(
+              internal_static_UpdateConfigurationRequest_descriptor,
+              new java.lang.String[] { });
+          internal_static_UpdateConfigurationResponse_descriptor =
+            getDescriptor().getMessageTypes().get(31);
+          internal_static_UpdateConfigurationResponse_fieldAccessorTable = new
+            com.google.protobuf.GeneratedMessage.FieldAccessorTable(
+              internal_static_UpdateConfigurationResponse_descriptor,
+              new java.lang.String[] { });
           return null;
         }
       };

http://git-wip-us.apache.org/repos/asf/hbase/blob/c9f506a2/hbase-protocol/src/main/protobuf/Admin.proto
----------------------------------------------------------------------
diff --git a/hbase-protocol/src/main/protobuf/Admin.proto b/hbase-protocol/src/main/protobuf/Admin.proto
index ecf30f4..ec34e72 100644
--- a/hbase-protocol/src/main/protobuf/Admin.proto
+++ b/hbase-protocol/src/main/protobuf/Admin.proto
@@ -228,6 +228,12 @@ message GetServerInfoResponse {
   required ServerInfo server_info = 1;
 }
 
+message UpdateConfigurationRequest {
+}
+
+message UpdateConfigurationResponse {
+}
+
 service AdminService {
   rpc GetRegionInfo(GetRegionInfoRequest)
     returns(GetRegionInfoResponse);
@@ -273,4 +279,7 @@ service AdminService {
 
   rpc UpdateFavoredNodes(UpdateFavoredNodesRequest)
     returns(UpdateFavoredNodesResponse);
+
+  rpc UpdateConfiguration(UpdateConfigurationRequest)
+    returns(UpdateConfigurationResponse);
 }

http://git-wip-us.apache.org/repos/asf/hbase/blob/c9f506a2/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegionServer.java
----------------------------------------------------------------------
diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegionServer.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegionServer.java
index 1391faa..0b202d5 100644
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegionServer.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegionServer.java
@@ -78,7 +78,6 @@ import org.apache.hadoop.hbase.client.ConnectionUtils;
 import org.apache.hadoop.hbase.client.HConnection;
 import org.apache.hadoop.hbase.client.HConnectionManager;
 import org.apache.hadoop.hbase.conf.ConfigurationManager;
-import org.apache.hadoop.hbase.conf.ConfigurationObserver;
 import org.apache.hadoop.hbase.coordination.BaseCoordinatedStateManager;
 import org.apache.hadoop.hbase.coordination.CloseRegionCoordination;
 import org.apache.hadoop.hbase.coordination.SplitLogWorkerCoordination;
@@ -3069,6 +3068,15 @@ public class HRegionServer extends HasThread implements
    */
   protected ConfigurationManager getConfigurationManager() {
     return configurationManager;
+  }
     
+  /**
+   * Reload the configuration from disk.
+   */
+  public void updateConfiguration() {
+    LOG.info("Reloading the configuration from disk.");
+    // Reload the configuration from disk.
+    conf.reloadConfiguration();
+    configurationManager.notifyAllObservers(conf);  
   }
 }

http://git-wip-us.apache.org/repos/asf/hbase/blob/c9f506a2/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/RSRpcServices.java
----------------------------------------------------------------------
diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/RSRpcServices.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/RSRpcServices.java
index 2000717..ef0f456 100644
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/RSRpcServices.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/RSRpcServices.java
@@ -114,6 +114,8 @@ import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.SplitRegionRequest
 import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.SplitRegionResponse;
 import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.StopServerRequest;
 import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.StopServerResponse;
+import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationRequest;
+import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationResponse;
 import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateFavoredNodesRequest;
 import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateFavoredNodesResponse;
 import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.WALEntry;
@@ -2165,4 +2167,16 @@ public class RSRpcServices implements HBaseRPCErrorHandler,
       CoprocessorServiceRequest request) throws ServiceException {
     return regionServer.execRegionServerService(controller, request);
   }
+
+  @Override
+  public UpdateConfigurationResponse updateConfiguration(
+      RpcController controller, UpdateConfigurationRequest request)
+      throws ServiceException {
+    try {
+      this.regionServer.updateConfiguration();
+    } catch (Exception e) {
+      throw new ServiceException(e);
+    }
+    return UpdateConfigurationResponse.getDefaultInstance();
+  }
 }

http://git-wip-us.apache.org/repos/asf/hbase/blob/c9f506a2/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestUpdateConfiguration.java
----------------------------------------------------------------------
diff --git a/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestUpdateConfiguration.java b/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestUpdateConfiguration.java
new file mode 100644
index 0000000..ffd6f62
--- /dev/null
+++ b/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestUpdateConfiguration.java
@@ -0,0 +1,49 @@
+/**
+ *
+ * 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 java.io.IOException;
+
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.apache.hadoop.hbase.HBaseTestingUtility;
+import org.apache.hadoop.hbase.ServerName;
+import org.apache.hadoop.hbase.MediumTests;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.junit.experimental.categories.Category;
+
+@Category({MediumTests.class})
+public class TestUpdateConfiguration {
+  private static final Log LOG = LogFactory.getLog(TestUpdateConfiguration.class);
+  private final static HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility();
+
+  @BeforeClass
+  public static void setup() throws Exception {
+    TEST_UTIL.startMiniCluster();
+  }
+
+  @Test
+  public void testOnlineConfigChange() throws IOException {
+    LOG.debug("Starting the test");
+    Admin admin = TEST_UTIL.getHBaseAdmin();
+    ServerName server = TEST_UTIL.getHBaseCluster().getRegionServer(0).getServerName();
+    admin.updateConfiguration(server);
+  }
+}

http://git-wip-us.apache.org/repos/asf/hbase/blob/c9f506a2/hbase-server/src/test/java/org/apache/hadoop/hbase/master/MockRegionServer.java
----------------------------------------------------------------------
diff --git a/hbase-server/src/test/java/org/apache/hadoop/hbase/master/MockRegionServer.java b/hbase-server/src/test/java/org/apache/hadoop/hbase/master/MockRegionServer.java
index 30d89e0..9804419 100644
--- a/hbase-server/src/test/java/org/apache/hadoop/hbase/master/MockRegionServer.java
+++ b/hbase-server/src/test/java/org/apache/hadoop/hbase/master/MockRegionServer.java
@@ -72,6 +72,8 @@ import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.SplitRegionRequest
 import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.SplitRegionResponse;
 import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.StopServerRequest;
 import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.StopServerResponse;
+import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationRequest;
+import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateConfigurationResponse;
 import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateFavoredNodesRequest;
 import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateFavoredNodesResponse;
 import org.apache.hadoop.hbase.protobuf.generated.ClientProtos;
@@ -592,4 +594,11 @@ ClientProtos.ClientService.BlockingInterface, RegionServerServices {
     // TODO Auto-generated method stub
     return null;
   }
+
+  @Override
+  public UpdateConfigurationResponse updateConfiguration(
+      RpcController controller, UpdateConfigurationRequest request)
+      throws ServiceException {
+    return null;
+  }
 }

http://git-wip-us.apache.org/repos/asf/hbase/blob/c9f506a2/hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestRegionServerOnlineConfigChange.java
----------------------------------------------------------------------
diff --git a/hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestRegionServerOnlineConfigChange.java b/hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestRegionServerOnlineConfigChange.java
index 88dbb10..bd7242b 100644
--- a/hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestRegionServerOnlineConfigChange.java
+++ b/hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestRegionServerOnlineConfigChange.java
@@ -116,7 +116,7 @@ public class TestRegionServerOnlineConfigChange extends TestCase {
     HStore hstore = (HStore)s;
 
     // Set the new compaction ratio to a different value.
-    double newCompactionRatio = 
+    double newCompactionRatio =
             hstore.getStoreEngine().getCompactionPolicy().getConf().getCompactionRatio() + 0.1;
     conf.setFloat(strPrefix + "ratio", (float)newCompactionRatio);
 
@@ -202,4 +202,4 @@ public class TestRegionServerOnlineConfigChange extends TestCase {
     assertEquals(newMajorCompactionJitter,
       hstore.getStoreEngine().getCompactionPolicy().getConf().getMajorCompactionJitter(), 0.00001);
   }
-}
\ No newline at end of file
+}


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