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From st...@apache.org
Subject [3/4] hbase git commit: Fix CatalogTracker. Make it use Procedures doing clean up of Region data on split/merge. Without these changes, ITBLL was failing at larger scale (3-4hours 5B rows) because we were splitting split Regions.
Date Fri, 12 May 2017 00:27:30 GMT
http://git-wip-us.apache.org/repos/asf/hbase/blob/a23fcc97/hbase-protocol-shaded/src/main/java/org/apache/hadoop/hbase/shaded/protobuf/generated/MasterProcedureProtos.java
----------------------------------------------------------------------
diff --git a/hbase-protocol-shaded/src/main/java/org/apache/hadoop/hbase/shaded/protobuf/generated/MasterProcedureProtos.java b/hbase-protocol-shaded/src/main/java/org/apache/hadoop/hbase/shaded/protobuf/generated/MasterProcedureProtos.java
index a5e2eaa..88677e4 100644
--- a/hbase-protocol-shaded/src/main/java/org/apache/hadoop/hbase/shaded/protobuf/generated/MasterProcedureProtos.java
+++ b/hbase-protocol-shaded/src/main/java/org/apache/hadoop/hbase/shaded/protobuf/generated/MasterProcedureProtos.java
@@ -2515,6 +2515,204 @@ public final class MasterProcedureProtos {
     // @@protoc_insertion_point(enum_scope:hbase.pb.MoveRegionState)
   }
 
+  /**
+   * Protobuf enum {@code hbase.pb.GCRegionState}
+   */
+  public enum GCRegionState
+      implements org.apache.hadoop.hbase.shaded.com.google.protobuf.ProtocolMessageEnum {
+    /**
+     * <code>GC_REGION_PREPARE = 1;</code>
+     */
+    GC_REGION_PREPARE(1),
+    /**
+     * <code>GC_REGION_ARCHIVE = 2;</code>
+     */
+    GC_REGION_ARCHIVE(2),
+    /**
+     * <code>GC_REGION_PURGE_METADATA = 3;</code>
+     */
+    GC_REGION_PURGE_METADATA(3),
+    ;
+
+    /**
+     * <code>GC_REGION_PREPARE = 1;</code>
+     */
+    public static final int GC_REGION_PREPARE_VALUE = 1;
+    /**
+     * <code>GC_REGION_ARCHIVE = 2;</code>
+     */
+    public static final int GC_REGION_ARCHIVE_VALUE = 2;
+    /**
+     * <code>GC_REGION_PURGE_METADATA = 3;</code>
+     */
+    public static final int GC_REGION_PURGE_METADATA_VALUE = 3;
+
+
+    public final int getNumber() {
+      return value;
+    }
+
+    /**
+     * @deprecated Use {@link #forNumber(int)} instead.
+     */
+    @java.lang.Deprecated
+    public static GCRegionState valueOf(int value) {
+      return forNumber(value);
+    }
+
+    public static GCRegionState forNumber(int value) {
+      switch (value) {
+        case 1: return GC_REGION_PREPARE;
+        case 2: return GC_REGION_ARCHIVE;
+        case 3: return GC_REGION_PURGE_METADATA;
+        default: return null;
+      }
+    }
+
+    public static org.apache.hadoop.hbase.shaded.com.google.protobuf.Internal.EnumLiteMap<GCRegionState>
+        internalGetValueMap() {
+      return internalValueMap;
+    }
+    private static final org.apache.hadoop.hbase.shaded.com.google.protobuf.Internal.EnumLiteMap<
+        GCRegionState> internalValueMap =
+          new org.apache.hadoop.hbase.shaded.com.google.protobuf.Internal.EnumLiteMap<GCRegionState>() {
+            public GCRegionState findValueByNumber(int number) {
+              return GCRegionState.forNumber(number);
+            }
+          };
+
+    public final org.apache.hadoop.hbase.shaded.com.google.protobuf.Descriptors.EnumValueDescriptor
+        getValueDescriptor() {
+      return getDescriptor().getValues().get(ordinal());
+    }
+    public final org.apache.hadoop.hbase.shaded.com.google.protobuf.Descriptors.EnumDescriptor
+        getDescriptorForType() {
+      return getDescriptor();
+    }
+    public static final org.apache.hadoop.hbase.shaded.com.google.protobuf.Descriptors.EnumDescriptor
+        getDescriptor() {
+      return org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.getDescriptor().getEnumTypes().get(20);
+    }
+
+    private static final GCRegionState[] VALUES = values();
+
+    public static GCRegionState valueOf(
+        org.apache.hadoop.hbase.shaded.com.google.protobuf.Descriptors.EnumValueDescriptor desc) {
+      if (desc.getType() != getDescriptor()) {
+        throw new java.lang.IllegalArgumentException(
+          "EnumValueDescriptor is not for this type.");
+      }
+      return VALUES[desc.getIndex()];
+    }
+
+    private final int value;
+
+    private GCRegionState(int value) {
+      this.value = value;
+    }
+
+    // @@protoc_insertion_point(enum_scope:hbase.pb.GCRegionState)
+  }
+
+  /**
+   * Protobuf enum {@code hbase.pb.GCMergedRegionsState}
+   */
+  public enum GCMergedRegionsState
+      implements org.apache.hadoop.hbase.shaded.com.google.protobuf.ProtocolMessageEnum {
+    /**
+     * <code>GC_MERGED_REGIONS_PREPARE = 1;</code>
+     */
+    GC_MERGED_REGIONS_PREPARE(1),
+    /**
+     * <code>GC_MERGED_REGIONS_PURGE = 2;</code>
+     */
+    GC_MERGED_REGIONS_PURGE(2),
+    /**
+     * <code>GC_REGION_EDIT_METADATA = 3;</code>
+     */
+    GC_REGION_EDIT_METADATA(3),
+    ;
+
+    /**
+     * <code>GC_MERGED_REGIONS_PREPARE = 1;</code>
+     */
+    public static final int GC_MERGED_REGIONS_PREPARE_VALUE = 1;
+    /**
+     * <code>GC_MERGED_REGIONS_PURGE = 2;</code>
+     */
+    public static final int GC_MERGED_REGIONS_PURGE_VALUE = 2;
+    /**
+     * <code>GC_REGION_EDIT_METADATA = 3;</code>
+     */
+    public static final int GC_REGION_EDIT_METADATA_VALUE = 3;
+
+
+    public final int getNumber() {
+      return value;
+    }
+
+    /**
+     * @deprecated Use {@link #forNumber(int)} instead.
+     */
+    @java.lang.Deprecated
+    public static GCMergedRegionsState valueOf(int value) {
+      return forNumber(value);
+    }
+
+    public static GCMergedRegionsState forNumber(int value) {
+      switch (value) {
+        case 1: return GC_MERGED_REGIONS_PREPARE;
+        case 2: return GC_MERGED_REGIONS_PURGE;
+        case 3: return GC_REGION_EDIT_METADATA;
+        default: return null;
+      }
+    }
+
+    public static org.apache.hadoop.hbase.shaded.com.google.protobuf.Internal.EnumLiteMap<GCMergedRegionsState>
+        internalGetValueMap() {
+      return internalValueMap;
+    }
+    private static final org.apache.hadoop.hbase.shaded.com.google.protobuf.Internal.EnumLiteMap<
+        GCMergedRegionsState> internalValueMap =
+          new org.apache.hadoop.hbase.shaded.com.google.protobuf.Internal.EnumLiteMap<GCMergedRegionsState>() {
+            public GCMergedRegionsState findValueByNumber(int number) {
+              return GCMergedRegionsState.forNumber(number);
+            }
+          };
+
+    public final org.apache.hadoop.hbase.shaded.com.google.protobuf.Descriptors.EnumValueDescriptor
+        getValueDescriptor() {
+      return getDescriptor().getValues().get(ordinal());
+    }
+    public final org.apache.hadoop.hbase.shaded.com.google.protobuf.Descriptors.EnumDescriptor
+        getDescriptorForType() {
+      return getDescriptor();
+    }
+    public static final org.apache.hadoop.hbase.shaded.com.google.protobuf.Descriptors.EnumDescriptor
+        getDescriptor() {
+      return org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.getDescriptor().getEnumTypes().get(21);
+    }
+
+    private static final GCMergedRegionsState[] VALUES = values();
+
+    public static GCMergedRegionsState valueOf(
+        org.apache.hadoop.hbase.shaded.com.google.protobuf.Descriptors.EnumValueDescriptor desc) {
+      if (desc.getType() != getDescriptor()) {
+        throw new java.lang.IllegalArgumentException(
+          "EnumValueDescriptor is not for this type.");
+      }
+      return VALUES[desc.getIndex()];
+    }
+
+    private final int value;
+
+    private GCMergedRegionsState(int value) {
+      this.value = value;
+    }
+
+    // @@protoc_insertion_point(enum_scope:hbase.pb.GCMergedRegionsState)
+  }
+
   public interface CreateTableStateDataOrBuilder extends
       // @@protoc_insertion_point(interface_extends:hbase.pb.CreateTableStateData)
       org.apache.hadoop.hbase.shaded.com.google.protobuf.MessageOrBuilder {
@@ -28538,122 +28736,1742 @@ public final class MasterProcedureProtos {
 
   }
 
-  private static final org.apache.hadoop.hbase.shaded.com.google.protobuf.Descriptors.Descriptor
-    internal_static_hbase_pb_CreateTableStateData_descriptor;
-  private static final 
-    org.apache.hadoop.hbase.shaded.com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_hbase_pb_CreateTableStateData_fieldAccessorTable;
-  private static final org.apache.hadoop.hbase.shaded.com.google.protobuf.Descriptors.Descriptor
-    internal_static_hbase_pb_ModifyTableStateData_descriptor;
-  private static final 
-    org.apache.hadoop.hbase.shaded.com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_hbase_pb_ModifyTableStateData_fieldAccessorTable;
-  private static final org.apache.hadoop.hbase.shaded.com.google.protobuf.Descriptors.Descriptor
-    internal_static_hbase_pb_TruncateTableStateData_descriptor;
-  private static final 
-    org.apache.hadoop.hbase.shaded.com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_hbase_pb_TruncateTableStateData_fieldAccessorTable;
-  private static final org.apache.hadoop.hbase.shaded.com.google.protobuf.Descriptors.Descriptor
-    internal_static_hbase_pb_DeleteTableStateData_descriptor;
-  private static final 
-    org.apache.hadoop.hbase.shaded.com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_hbase_pb_DeleteTableStateData_fieldAccessorTable;
-  private static final org.apache.hadoop.hbase.shaded.com.google.protobuf.Descriptors.Descriptor
-    internal_static_hbase_pb_CreateNamespaceStateData_descriptor;
-  private static final 
-    org.apache.hadoop.hbase.shaded.com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_hbase_pb_CreateNamespaceStateData_fieldAccessorTable;
-  private static final org.apache.hadoop.hbase.shaded.com.google.protobuf.Descriptors.Descriptor
-    internal_static_hbase_pb_ModifyNamespaceStateData_descriptor;
-  private static final 
-    org.apache.hadoop.hbase.shaded.com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_hbase_pb_ModifyNamespaceStateData_fieldAccessorTable;
-  private static final org.apache.hadoop.hbase.shaded.com.google.protobuf.Descriptors.Descriptor
-    internal_static_hbase_pb_DeleteNamespaceStateData_descriptor;
-  private static final 
-    org.apache.hadoop.hbase.shaded.com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_hbase_pb_DeleteNamespaceStateData_fieldAccessorTable;
-  private static final org.apache.hadoop.hbase.shaded.com.google.protobuf.Descriptors.Descriptor
-    internal_static_hbase_pb_AddColumnFamilyStateData_descriptor;
-  private static final 
-    org.apache.hadoop.hbase.shaded.com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_hbase_pb_AddColumnFamilyStateData_fieldAccessorTable;
-  private static final org.apache.hadoop.hbase.shaded.com.google.protobuf.Descriptors.Descriptor
-    internal_static_hbase_pb_ModifyColumnFamilyStateData_descriptor;
-  private static final 
-    org.apache.hadoop.hbase.shaded.com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_hbase_pb_ModifyColumnFamilyStateData_fieldAccessorTable;
-  private static final org.apache.hadoop.hbase.shaded.com.google.protobuf.Descriptors.Descriptor
-    internal_static_hbase_pb_DeleteColumnFamilyStateData_descriptor;
-  private static final 
-    org.apache.hadoop.hbase.shaded.com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_hbase_pb_DeleteColumnFamilyStateData_fieldAccessorTable;
-  private static final org.apache.hadoop.hbase.shaded.com.google.protobuf.Descriptors.Descriptor
-    internal_static_hbase_pb_EnableTableStateData_descriptor;
-  private static final 
-    org.apache.hadoop.hbase.shaded.com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_hbase_pb_EnableTableStateData_fieldAccessorTable;
-  private static final org.apache.hadoop.hbase.shaded.com.google.protobuf.Descriptors.Descriptor
-    internal_static_hbase_pb_DisableTableStateData_descriptor;
-  private static final 
-    org.apache.hadoop.hbase.shaded.com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_hbase_pb_DisableTableStateData_fieldAccessorTable;
-  private static final org.apache.hadoop.hbase.shaded.com.google.protobuf.Descriptors.Descriptor
-    internal_static_hbase_pb_RestoreParentToChildRegionsPair_descriptor;
-  private static final 
-    org.apache.hadoop.hbase.shaded.com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_hbase_pb_RestoreParentToChildRegionsPair_fieldAccessorTable;
-  private static final org.apache.hadoop.hbase.shaded.com.google.protobuf.Descriptors.Descriptor
-    internal_static_hbase_pb_CloneSnapshotStateData_descriptor;
-  private static final 
-    org.apache.hadoop.hbase.shaded.com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_hbase_pb_CloneSnapshotStateData_fieldAccessorTable;
-  private static final org.apache.hadoop.hbase.shaded.com.google.protobuf.Descriptors.Descriptor
-    internal_static_hbase_pb_RestoreSnapshotStateData_descriptor;
-  private static final 
-    org.apache.hadoop.hbase.shaded.com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_hbase_pb_RestoreSnapshotStateData_fieldAccessorTable;
-  private static final org.apache.hadoop.hbase.shaded.com.google.protobuf.Descriptors.Descriptor
-    internal_static_hbase_pb_DispatchMergingRegionsStateData_descriptor;
-  private static final 
-    org.apache.hadoop.hbase.shaded.com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_hbase_pb_DispatchMergingRegionsStateData_fieldAccessorTable;
-  private static final org.apache.hadoop.hbase.shaded.com.google.protobuf.Descriptors.Descriptor
-    internal_static_hbase_pb_SplitTableRegionStateData_descriptor;
-  private static final 
-    org.apache.hadoop.hbase.shaded.com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_hbase_pb_SplitTableRegionStateData_fieldAccessorTable;
-  private static final org.apache.hadoop.hbase.shaded.com.google.protobuf.Descriptors.Descriptor
-    internal_static_hbase_pb_MergeTableRegionsStateData_descriptor;
-  private static final 
-    org.apache.hadoop.hbase.shaded.com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_hbase_pb_MergeTableRegionsStateData_fieldAccessorTable;
-  private static final org.apache.hadoop.hbase.shaded.com.google.protobuf.Descriptors.Descriptor
-    internal_static_hbase_pb_ServerCrashStateData_descriptor;
-  private static final 
-    org.apache.hadoop.hbase.shaded.com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_hbase_pb_ServerCrashStateData_fieldAccessorTable;
-  private static final org.apache.hadoop.hbase.shaded.com.google.protobuf.Descriptors.Descriptor
-    internal_static_hbase_pb_AssignRegionStateData_descriptor;
-  private static final 
-    org.apache.hadoop.hbase.shaded.com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_hbase_pb_AssignRegionStateData_fieldAccessorTable;
-  private static final org.apache.hadoop.hbase.shaded.com.google.protobuf.Descriptors.Descriptor
-    internal_static_hbase_pb_UnassignRegionStateData_descriptor;
-  private static final 
-    org.apache.hadoop.hbase.shaded.com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_hbase_pb_UnassignRegionStateData_fieldAccessorTable;
-  private static final org.apache.hadoop.hbase.shaded.com.google.protobuf.Descriptors.Descriptor
-    internal_static_hbase_pb_MoveRegionStateData_descriptor;
-  private static final 
-    org.apache.hadoop.hbase.shaded.com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_hbase_pb_MoveRegionStateData_fieldAccessorTable;
+  public interface GCRegionStateDataOrBuilder extends
+      // @@protoc_insertion_point(interface_extends:hbase.pb.GCRegionStateData)
+      org.apache.hadoop.hbase.shaded.com.google.protobuf.MessageOrBuilder {
 
-  public static org.apache.hadoop.hbase.shaded.com.google.protobuf.Descriptors.FileDescriptor
-      getDescriptor() {
-    return descriptor;
-  }
-  private static  org.apache.hadoop.hbase.shaded.com.google.protobuf.Descriptors.FileDescriptor
+    /**
+     * <code>required .hbase.pb.RegionInfo region_info = 1;</code>
+     */
+    boolean hasRegionInfo();
+    /**
+     * <code>required .hbase.pb.RegionInfo region_info = 1;</code>
+     */
+    org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo getRegionInfo();
+    /**
+     * <code>required .hbase.pb.RegionInfo region_info = 1;</code>
+     */
+    org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfoOrBuilder getRegionInfoOrBuilder();
+  }
+  /**
+   * Protobuf type {@code hbase.pb.GCRegionStateData}
+   */
+  public  static final class GCRegionStateData extends
+      org.apache.hadoop.hbase.shaded.com.google.protobuf.GeneratedMessageV3 implements
+      // @@protoc_insertion_point(message_implements:hbase.pb.GCRegionStateData)
+      GCRegionStateDataOrBuilder {
+    // Use GCRegionStateData.newBuilder() to construct.
+    private GCRegionStateData(org.apache.hadoop.hbase.shaded.com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
+      super(builder);
+    }
+    private GCRegionStateData() {
+    }
+
+    @java.lang.Override
+    public final org.apache.hadoop.hbase.shaded.com.google.protobuf.UnknownFieldSet
+    getUnknownFields() {
+      return this.unknownFields;
+    }
+    private GCRegionStateData(
+        org.apache.hadoop.hbase.shaded.com.google.protobuf.CodedInputStream input,
+        org.apache.hadoop.hbase.shaded.com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws org.apache.hadoop.hbase.shaded.com.google.protobuf.InvalidProtocolBufferException {
+      this();
+      int mutable_bitField0_ = 0;
+      org.apache.hadoop.hbase.shaded.com.google.protobuf.UnknownFieldSet.Builder unknownFields =
+          org.apache.hadoop.hbase.shaded.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;
+            }
+            case 10: {
+              org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo.Builder subBuilder = null;
+              if (((bitField0_ & 0x00000001) == 0x00000001)) {
+                subBuilder = regionInfo_.toBuilder();
+              }
+              regionInfo_ = input.readMessage(org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo.PARSER, extensionRegistry);
+              if (subBuilder != null) {
+                subBuilder.mergeFrom(regionInfo_);
+                regionInfo_ = subBuilder.buildPartial();
+              }
+              bitField0_ |= 0x00000001;
+              break;
+            }
+          }
+        }
+      } catch (org.apache.hadoop.hbase.shaded.com.google.protobuf.InvalidProtocolBufferException e) {
+        throw e.setUnfinishedMessage(this);
+      } catch (java.io.IOException e) {
+        throw new org.apache.hadoop.hbase.shaded.com.google.protobuf.InvalidProtocolBufferException(
+            e).setUnfinishedMessage(this);
+      } finally {
+        this.unknownFields = unknownFields.build();
+        makeExtensionsImmutable();
+      }
+    }
+    public static final org.apache.hadoop.hbase.shaded.com.google.protobuf.Descriptors.Descriptor
+        getDescriptor() {
+      return org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.internal_static_hbase_pb_GCRegionStateData_descriptor;
+    }
+
+    protected org.apache.hadoop.hbase.shaded.com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+        internalGetFieldAccessorTable() {
+      return org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.internal_static_hbase_pb_GCRegionStateData_fieldAccessorTable
+          .ensureFieldAccessorsInitialized(
+              org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCRegionStateData.class, org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCRegionStateData.Builder.class);
+    }
+
+    private int bitField0_;
+    public static final int REGION_INFO_FIELD_NUMBER = 1;
+    private org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo regionInfo_;
+    /**
+     * <code>required .hbase.pb.RegionInfo region_info = 1;</code>
+     */
+    public boolean hasRegionInfo() {
+      return ((bitField0_ & 0x00000001) == 0x00000001);
+    }
+    /**
+     * <code>required .hbase.pb.RegionInfo region_info = 1;</code>
+     */
+    public org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo getRegionInfo() {
+      return regionInfo_ == null ? org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo.getDefaultInstance() : regionInfo_;
+    }
+    /**
+     * <code>required .hbase.pb.RegionInfo region_info = 1;</code>
+     */
+    public org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfoOrBuilder getRegionInfoOrBuilder() {
+      return regionInfo_ == null ? org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo.getDefaultInstance() : regionInfo_;
+    }
+
+    private byte memoizedIsInitialized = -1;
+    public final boolean isInitialized() {
+      byte isInitialized = memoizedIsInitialized;
+      if (isInitialized == 1) return true;
+      if (isInitialized == 0) return false;
+
+      if (!hasRegionInfo()) {
+        memoizedIsInitialized = 0;
+        return false;
+      }
+      if (!getRegionInfo().isInitialized()) {
+        memoizedIsInitialized = 0;
+        return false;
+      }
+      memoizedIsInitialized = 1;
+      return true;
+    }
+
+    public void writeTo(org.apache.hadoop.hbase.shaded.com.google.protobuf.CodedOutputStream output)
+                        throws java.io.IOException {
+      if (((bitField0_ & 0x00000001) == 0x00000001)) {
+        output.writeMessage(1, getRegionInfo());
+      }
+      unknownFields.writeTo(output);
+    }
+
+    public int getSerializedSize() {
+      int size = memoizedSize;
+      if (size != -1) return size;
+
+      size = 0;
+      if (((bitField0_ & 0x00000001) == 0x00000001)) {
+        size += org.apache.hadoop.hbase.shaded.com.google.protobuf.CodedOutputStream
+          .computeMessageSize(1, getRegionInfo());
+      }
+      size += unknownFields.getSerializedSize();
+      memoizedSize = size;
+      return size;
+    }
+
+    private static final long serialVersionUID = 0L;
+    @java.lang.Override
+    public boolean equals(final java.lang.Object obj) {
+      if (obj == this) {
+       return true;
+      }
+      if (!(obj instanceof org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCRegionStateData)) {
+        return super.equals(obj);
+      }
+      org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCRegionStateData other = (org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCRegionStateData) obj;
+
+      boolean result = true;
+      result = result && (hasRegionInfo() == other.hasRegionInfo());
+      if (hasRegionInfo()) {
+        result = result && getRegionInfo()
+            .equals(other.getRegionInfo());
+      }
+      result = result && unknownFields.equals(other.unknownFields);
+      return result;
+    }
+
+    @java.lang.Override
+    public int hashCode() {
+      if (memoizedHashCode != 0) {
+        return memoizedHashCode;
+      }
+      int hash = 41;
+      hash = (19 * hash) + getDescriptor().hashCode();
+      if (hasRegionInfo()) {
+        hash = (37 * hash) + REGION_INFO_FIELD_NUMBER;
+        hash = (53 * hash) + getRegionInfo().hashCode();
+      }
+      hash = (29 * hash) + unknownFields.hashCode();
+      memoizedHashCode = hash;
+      return hash;
+    }
+
+    public static org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCRegionStateData parseFrom(
+        org.apache.hadoop.hbase.shaded.com.google.protobuf.ByteString data)
+        throws org.apache.hadoop.hbase.shaded.com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCRegionStateData parseFrom(
+        org.apache.hadoop.hbase.shaded.com.google.protobuf.ByteString data,
+        org.apache.hadoop.hbase.shaded.com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws org.apache.hadoop.hbase.shaded.com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCRegionStateData parseFrom(byte[] data)
+        throws org.apache.hadoop.hbase.shaded.com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCRegionStateData parseFrom(
+        byte[] data,
+        org.apache.hadoop.hbase.shaded.com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws org.apache.hadoop.hbase.shaded.com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCRegionStateData parseFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return org.apache.hadoop.hbase.shaded.com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
+    }
+    public static org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCRegionStateData parseFrom(
+        java.io.InputStream input,
+        org.apache.hadoop.hbase.shaded.com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return org.apache.hadoop.hbase.shaded.com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
+    }
+    public static org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCRegionStateData parseDelimitedFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return org.apache.hadoop.hbase.shaded.com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input);
+    }
+    public static org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCRegionStateData parseDelimitedFrom(
+        java.io.InputStream input,
+        org.apache.hadoop.hbase.shaded.com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return org.apache.hadoop.hbase.shaded.com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
+    }
+    public static org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCRegionStateData parseFrom(
+        org.apache.hadoop.hbase.shaded.com.google.protobuf.CodedInputStream input)
+        throws java.io.IOException {
+      return org.apache.hadoop.hbase.shaded.com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
+    }
+    public static org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCRegionStateData parseFrom(
+        org.apache.hadoop.hbase.shaded.com.google.protobuf.CodedInputStream input,
+        org.apache.hadoop.hbase.shaded.com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return org.apache.hadoop.hbase.shaded.com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
+    }
+
+    public Builder newBuilderForType() { return newBuilder(); }
+    public static Builder newBuilder() {
+      return DEFAULT_INSTANCE.toBuilder();
+    }
+    public static Builder newBuilder(org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCRegionStateData prototype) {
+      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
+    }
+    public Builder toBuilder() {
+      return this == DEFAULT_INSTANCE
+          ? new Builder() : new Builder().mergeFrom(this);
+    }
+
+    @java.lang.Override
+    protected Builder newBuilderForType(
+        org.apache.hadoop.hbase.shaded.com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+      Builder builder = new Builder(parent);
+      return builder;
+    }
+    /**
+     * Protobuf type {@code hbase.pb.GCRegionStateData}
+     */
+    public static final class Builder extends
+        org.apache.hadoop.hbase.shaded.com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
+        // @@protoc_insertion_point(builder_implements:hbase.pb.GCRegionStateData)
+        org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCRegionStateDataOrBuilder {
+      public static final org.apache.hadoop.hbase.shaded.com.google.protobuf.Descriptors.Descriptor
+          getDescriptor() {
+        return org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.internal_static_hbase_pb_GCRegionStateData_descriptor;
+      }
+
+      protected org.apache.hadoop.hbase.shaded.com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+          internalGetFieldAccessorTable() {
+        return org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.internal_static_hbase_pb_GCRegionStateData_fieldAccessorTable
+            .ensureFieldAccessorsInitialized(
+                org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCRegionStateData.class, org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCRegionStateData.Builder.class);
+      }
+
+      // Construct using org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCRegionStateData.newBuilder()
+      private Builder() {
+        maybeForceBuilderInitialization();
+      }
+
+      private Builder(
+          org.apache.hadoop.hbase.shaded.com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+        super(parent);
+        maybeForceBuilderInitialization();
+      }
+      private void maybeForceBuilderInitialization() {
+        if (org.apache.hadoop.hbase.shaded.com.google.protobuf.GeneratedMessageV3
+                .alwaysUseFieldBuilders) {
+          getRegionInfoFieldBuilder();
+        }
+      }
+      public Builder clear() {
+        super.clear();
+        if (regionInfoBuilder_ == null) {
+          regionInfo_ = null;
+        } else {
+          regionInfoBuilder_.clear();
+        }
+        bitField0_ = (bitField0_ & ~0x00000001);
+        return this;
+      }
+
+      public org.apache.hadoop.hbase.shaded.com.google.protobuf.Descriptors.Descriptor
+          getDescriptorForType() {
+        return org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.internal_static_hbase_pb_GCRegionStateData_descriptor;
+      }
+
+      public org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCRegionStateData getDefaultInstanceForType() {
+        return org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCRegionStateData.getDefaultInstance();
+      }
+
+      public org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCRegionStateData build() {
+        org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCRegionStateData result = buildPartial();
+        if (!result.isInitialized()) {
+          throw newUninitializedMessageException(result);
+        }
+        return result;
+      }
+
+      public org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCRegionStateData buildPartial() {
+        org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCRegionStateData result = new org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCRegionStateData(this);
+        int from_bitField0_ = bitField0_;
+        int to_bitField0_ = 0;
+        if (((from_bitField0_ & 0x00000001) == 0x00000001)) {
+          to_bitField0_ |= 0x00000001;
+        }
+        if (regionInfoBuilder_ == null) {
+          result.regionInfo_ = regionInfo_;
+        } else {
+          result.regionInfo_ = regionInfoBuilder_.build();
+        }
+        result.bitField0_ = to_bitField0_;
+        onBuilt();
+        return result;
+      }
+
+      public Builder clone() {
+        return (Builder) super.clone();
+      }
+      public Builder setField(
+          org.apache.hadoop.hbase.shaded.com.google.protobuf.Descriptors.FieldDescriptor field,
+          Object value) {
+        return (Builder) super.setField(field, value);
+      }
+      public Builder clearField(
+          org.apache.hadoop.hbase.shaded.com.google.protobuf.Descriptors.FieldDescriptor field) {
+        return (Builder) super.clearField(field);
+      }
+      public Builder clearOneof(
+          org.apache.hadoop.hbase.shaded.com.google.protobuf.Descriptors.OneofDescriptor oneof) {
+        return (Builder) super.clearOneof(oneof);
+      }
+      public Builder setRepeatedField(
+          org.apache.hadoop.hbase.shaded.com.google.protobuf.Descriptors.FieldDescriptor field,
+          int index, Object value) {
+        return (Builder) super.setRepeatedField(field, index, value);
+      }
+      public Builder addRepeatedField(
+          org.apache.hadoop.hbase.shaded.com.google.protobuf.Descriptors.FieldDescriptor field,
+          Object value) {
+        return (Builder) super.addRepeatedField(field, value);
+      }
+      public Builder mergeFrom(org.apache.hadoop.hbase.shaded.com.google.protobuf.Message other) {
+        if (other instanceof org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCRegionStateData) {
+          return mergeFrom((org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCRegionStateData)other);
+        } else {
+          super.mergeFrom(other);
+          return this;
+        }
+      }
+
+      public Builder mergeFrom(org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCRegionStateData other) {
+        if (other == org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCRegionStateData.getDefaultInstance()) return this;
+        if (other.hasRegionInfo()) {
+          mergeRegionInfo(other.getRegionInfo());
+        }
+        this.mergeUnknownFields(other.unknownFields);
+        onChanged();
+        return this;
+      }
+
+      public final boolean isInitialized() {
+        if (!hasRegionInfo()) {
+          return false;
+        }
+        if (!getRegionInfo().isInitialized()) {
+          return false;
+        }
+        return true;
+      }
+
+      public Builder mergeFrom(
+          org.apache.hadoop.hbase.shaded.com.google.protobuf.CodedInputStream input,
+          org.apache.hadoop.hbase.shaded.com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws java.io.IOException {
+        org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCRegionStateData parsedMessage = null;
+        try {
+          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+        } catch (org.apache.hadoop.hbase.shaded.com.google.protobuf.InvalidProtocolBufferException e) {
+          parsedMessage = (org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCRegionStateData) e.getUnfinishedMessage();
+          throw e.unwrapIOException();
+        } finally {
+          if (parsedMessage != null) {
+            mergeFrom(parsedMessage);
+          }
+        }
+        return this;
+      }
+      private int bitField0_;
+
+      private org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo regionInfo_ = null;
+      private org.apache.hadoop.hbase.shaded.com.google.protobuf.SingleFieldBuilderV3<
+          org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo, org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo.Builder, org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfoOrBuilder> regionInfoBuilder_;
+      /**
+       * <code>required .hbase.pb.RegionInfo region_info = 1;</code>
+       */
+      public boolean hasRegionInfo() {
+        return ((bitField0_ & 0x00000001) == 0x00000001);
+      }
+      /**
+       * <code>required .hbase.pb.RegionInfo region_info = 1;</code>
+       */
+      public org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo getRegionInfo() {
+        if (regionInfoBuilder_ == null) {
+          return regionInfo_ == null ? org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo.getDefaultInstance() : regionInfo_;
+        } else {
+          return regionInfoBuilder_.getMessage();
+        }
+      }
+      /**
+       * <code>required .hbase.pb.RegionInfo region_info = 1;</code>
+       */
+      public Builder setRegionInfo(org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo value) {
+        if (regionInfoBuilder_ == null) {
+          if (value == null) {
+            throw new NullPointerException();
+          }
+          regionInfo_ = value;
+          onChanged();
+        } else {
+          regionInfoBuilder_.setMessage(value);
+        }
+        bitField0_ |= 0x00000001;
+        return this;
+      }
+      /**
+       * <code>required .hbase.pb.RegionInfo region_info = 1;</code>
+       */
+      public Builder setRegionInfo(
+          org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo.Builder builderForValue) {
+        if (regionInfoBuilder_ == null) {
+          regionInfo_ = builderForValue.build();
+          onChanged();
+        } else {
+          regionInfoBuilder_.setMessage(builderForValue.build());
+        }
+        bitField0_ |= 0x00000001;
+        return this;
+      }
+      /**
+       * <code>required .hbase.pb.RegionInfo region_info = 1;</code>
+       */
+      public Builder mergeRegionInfo(org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo value) {
+        if (regionInfoBuilder_ == null) {
+          if (((bitField0_ & 0x00000001) == 0x00000001) &&
+              regionInfo_ != null &&
+              regionInfo_ != org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo.getDefaultInstance()) {
+            regionInfo_ =
+              org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo.newBuilder(regionInfo_).mergeFrom(value).buildPartial();
+          } else {
+            regionInfo_ = value;
+          }
+          onChanged();
+        } else {
+          regionInfoBuilder_.mergeFrom(value);
+        }
+        bitField0_ |= 0x00000001;
+        return this;
+      }
+      /**
+       * <code>required .hbase.pb.RegionInfo region_info = 1;</code>
+       */
+      public Builder clearRegionInfo() {
+        if (regionInfoBuilder_ == null) {
+          regionInfo_ = null;
+          onChanged();
+        } else {
+          regionInfoBuilder_.clear();
+        }
+        bitField0_ = (bitField0_ & ~0x00000001);
+        return this;
+      }
+      /**
+       * <code>required .hbase.pb.RegionInfo region_info = 1;</code>
+       */
+      public org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo.Builder getRegionInfoBuilder() {
+        bitField0_ |= 0x00000001;
+        onChanged();
+        return getRegionInfoFieldBuilder().getBuilder();
+      }
+      /**
+       * <code>required .hbase.pb.RegionInfo region_info = 1;</code>
+       */
+      public org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfoOrBuilder getRegionInfoOrBuilder() {
+        if (regionInfoBuilder_ != null) {
+          return regionInfoBuilder_.getMessageOrBuilder();
+        } else {
+          return regionInfo_ == null ?
+              org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo.getDefaultInstance() : regionInfo_;
+        }
+      }
+      /**
+       * <code>required .hbase.pb.RegionInfo region_info = 1;</code>
+       */
+      private org.apache.hadoop.hbase.shaded.com.google.protobuf.SingleFieldBuilderV3<
+          org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo, org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo.Builder, org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfoOrBuilder> 
+          getRegionInfoFieldBuilder() {
+        if (regionInfoBuilder_ == null) {
+          regionInfoBuilder_ = new org.apache.hadoop.hbase.shaded.com.google.protobuf.SingleFieldBuilderV3<
+              org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo, org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo.Builder, org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfoOrBuilder>(
+                  getRegionInfo(),
+                  getParentForChildren(),
+                  isClean());
+          regionInfo_ = null;
+        }
+        return regionInfoBuilder_;
+      }
+      public final Builder setUnknownFields(
+          final org.apache.hadoop.hbase.shaded.com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.setUnknownFields(unknownFields);
+      }
+
+      public final Builder mergeUnknownFields(
+          final org.apache.hadoop.hbase.shaded.com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.mergeUnknownFields(unknownFields);
+      }
+
+
+      // @@protoc_insertion_point(builder_scope:hbase.pb.GCRegionStateData)
+    }
+
+    // @@protoc_insertion_point(class_scope:hbase.pb.GCRegionStateData)
+    private static final org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCRegionStateData DEFAULT_INSTANCE;
+    static {
+      DEFAULT_INSTANCE = new org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCRegionStateData();
+    }
+
+    public static org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCRegionStateData getDefaultInstance() {
+      return DEFAULT_INSTANCE;
+    }
+
+    @java.lang.Deprecated public static final org.apache.hadoop.hbase.shaded.com.google.protobuf.Parser<GCRegionStateData>
+        PARSER = new org.apache.hadoop.hbase.shaded.com.google.protobuf.AbstractParser<GCRegionStateData>() {
+      public GCRegionStateData parsePartialFrom(
+          org.apache.hadoop.hbase.shaded.com.google.protobuf.CodedInputStream input,
+          org.apache.hadoop.hbase.shaded.com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws org.apache.hadoop.hbase.shaded.com.google.protobuf.InvalidProtocolBufferException {
+          return new GCRegionStateData(input, extensionRegistry);
+      }
+    };
+
+    public static org.apache.hadoop.hbase.shaded.com.google.protobuf.Parser<GCRegionStateData> parser() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public org.apache.hadoop.hbase.shaded.com.google.protobuf.Parser<GCRegionStateData> getParserForType() {
+      return PARSER;
+    }
+
+    public org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCRegionStateData getDefaultInstanceForType() {
+      return DEFAULT_INSTANCE;
+    }
+
+  }
+
+  public interface GCMergedRegionsStateDataOrBuilder extends
+      // @@protoc_insertion_point(interface_extends:hbase.pb.GCMergedRegionsStateData)
+      org.apache.hadoop.hbase.shaded.com.google.protobuf.MessageOrBuilder {
+
+    /**
+     * <code>required .hbase.pb.RegionInfo parent_a = 1;</code>
+     */
+    boolean hasParentA();
+    /**
+     * <code>required .hbase.pb.RegionInfo parent_a = 1;</code>
+     */
+    org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo getParentA();
+    /**
+     * <code>required .hbase.pb.RegionInfo parent_a = 1;</code>
+     */
+    org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfoOrBuilder getParentAOrBuilder();
+
+    /**
+     * <code>required .hbase.pb.RegionInfo parent_b = 2;</code>
+     */
+    boolean hasParentB();
+    /**
+     * <code>required .hbase.pb.RegionInfo parent_b = 2;</code>
+     */
+    org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo getParentB();
+    /**
+     * <code>required .hbase.pb.RegionInfo parent_b = 2;</code>
+     */
+    org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfoOrBuilder getParentBOrBuilder();
+
+    /**
+     * <code>required .hbase.pb.RegionInfo merged_child = 3;</code>
+     */
+    boolean hasMergedChild();
+    /**
+     * <code>required .hbase.pb.RegionInfo merged_child = 3;</code>
+     */
+    org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo getMergedChild();
+    /**
+     * <code>required .hbase.pb.RegionInfo merged_child = 3;</code>
+     */
+    org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfoOrBuilder getMergedChildOrBuilder();
+  }
+  /**
+   * Protobuf type {@code hbase.pb.GCMergedRegionsStateData}
+   */
+  public  static final class GCMergedRegionsStateData extends
+      org.apache.hadoop.hbase.shaded.com.google.protobuf.GeneratedMessageV3 implements
+      // @@protoc_insertion_point(message_implements:hbase.pb.GCMergedRegionsStateData)
+      GCMergedRegionsStateDataOrBuilder {
+    // Use GCMergedRegionsStateData.newBuilder() to construct.
+    private GCMergedRegionsStateData(org.apache.hadoop.hbase.shaded.com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
+      super(builder);
+    }
+    private GCMergedRegionsStateData() {
+    }
+
+    @java.lang.Override
+    public final org.apache.hadoop.hbase.shaded.com.google.protobuf.UnknownFieldSet
+    getUnknownFields() {
+      return this.unknownFields;
+    }
+    private GCMergedRegionsStateData(
+        org.apache.hadoop.hbase.shaded.com.google.protobuf.CodedInputStream input,
+        org.apache.hadoop.hbase.shaded.com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws org.apache.hadoop.hbase.shaded.com.google.protobuf.InvalidProtocolBufferException {
+      this();
+      int mutable_bitField0_ = 0;
+      org.apache.hadoop.hbase.shaded.com.google.protobuf.UnknownFieldSet.Builder unknownFields =
+          org.apache.hadoop.hbase.shaded.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;
+            }
+            case 10: {
+              org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo.Builder subBuilder = null;
+              if (((bitField0_ & 0x00000001) == 0x00000001)) {
+                subBuilder = parentA_.toBuilder();
+              }
+              parentA_ = input.readMessage(org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo.PARSER, extensionRegistry);
+              if (subBuilder != null) {
+                subBuilder.mergeFrom(parentA_);
+                parentA_ = subBuilder.buildPartial();
+              }
+              bitField0_ |= 0x00000001;
+              break;
+            }
+            case 18: {
+              org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo.Builder subBuilder = null;
+              if (((bitField0_ & 0x00000002) == 0x00000002)) {
+                subBuilder = parentB_.toBuilder();
+              }
+              parentB_ = input.readMessage(org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo.PARSER, extensionRegistry);
+              if (subBuilder != null) {
+                subBuilder.mergeFrom(parentB_);
+                parentB_ = subBuilder.buildPartial();
+              }
+              bitField0_ |= 0x00000002;
+              break;
+            }
+            case 26: {
+              org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo.Builder subBuilder = null;
+              if (((bitField0_ & 0x00000004) == 0x00000004)) {
+                subBuilder = mergedChild_.toBuilder();
+              }
+              mergedChild_ = input.readMessage(org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo.PARSER, extensionRegistry);
+              if (subBuilder != null) {
+                subBuilder.mergeFrom(mergedChild_);
+                mergedChild_ = subBuilder.buildPartial();
+              }
+              bitField0_ |= 0x00000004;
+              break;
+            }
+          }
+        }
+      } catch (org.apache.hadoop.hbase.shaded.com.google.protobuf.InvalidProtocolBufferException e) {
+        throw e.setUnfinishedMessage(this);
+      } catch (java.io.IOException e) {
+        throw new org.apache.hadoop.hbase.shaded.com.google.protobuf.InvalidProtocolBufferException(
+            e).setUnfinishedMessage(this);
+      } finally {
+        this.unknownFields = unknownFields.build();
+        makeExtensionsImmutable();
+      }
+    }
+    public static final org.apache.hadoop.hbase.shaded.com.google.protobuf.Descriptors.Descriptor
+        getDescriptor() {
+      return org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.internal_static_hbase_pb_GCMergedRegionsStateData_descriptor;
+    }
+
+    protected org.apache.hadoop.hbase.shaded.com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+        internalGetFieldAccessorTable() {
+      return org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.internal_static_hbase_pb_GCMergedRegionsStateData_fieldAccessorTable
+          .ensureFieldAccessorsInitialized(
+              org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCMergedRegionsStateData.class, org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCMergedRegionsStateData.Builder.class);
+    }
+
+    private int bitField0_;
+    public static final int PARENT_A_FIELD_NUMBER = 1;
+    private org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo parentA_;
+    /**
+     * <code>required .hbase.pb.RegionInfo parent_a = 1;</code>
+     */
+    public boolean hasParentA() {
+      return ((bitField0_ & 0x00000001) == 0x00000001);
+    }
+    /**
+     * <code>required .hbase.pb.RegionInfo parent_a = 1;</code>
+     */
+    public org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo getParentA() {
+      return parentA_ == null ? org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo.getDefaultInstance() : parentA_;
+    }
+    /**
+     * <code>required .hbase.pb.RegionInfo parent_a = 1;</code>
+     */
+    public org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfoOrBuilder getParentAOrBuilder() {
+      return parentA_ == null ? org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo.getDefaultInstance() : parentA_;
+    }
+
+    public static final int PARENT_B_FIELD_NUMBER = 2;
+    private org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo parentB_;
+    /**
+     * <code>required .hbase.pb.RegionInfo parent_b = 2;</code>
+     */
+    public boolean hasParentB() {
+      return ((bitField0_ & 0x00000002) == 0x00000002);
+    }
+    /**
+     * <code>required .hbase.pb.RegionInfo parent_b = 2;</code>
+     */
+    public org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo getParentB() {
+      return parentB_ == null ? org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo.getDefaultInstance() : parentB_;
+    }
+    /**
+     * <code>required .hbase.pb.RegionInfo parent_b = 2;</code>
+     */
+    public org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfoOrBuilder getParentBOrBuilder() {
+      return parentB_ == null ? org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo.getDefaultInstance() : parentB_;
+    }
+
+    public static final int MERGED_CHILD_FIELD_NUMBER = 3;
+    private org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo mergedChild_;
+    /**
+     * <code>required .hbase.pb.RegionInfo merged_child = 3;</code>
+     */
+    public boolean hasMergedChild() {
+      return ((bitField0_ & 0x00000004) == 0x00000004);
+    }
+    /**
+     * <code>required .hbase.pb.RegionInfo merged_child = 3;</code>
+     */
+    public org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo getMergedChild() {
+      return mergedChild_ == null ? org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo.getDefaultInstance() : mergedChild_;
+    }
+    /**
+     * <code>required .hbase.pb.RegionInfo merged_child = 3;</code>
+     */
+    public org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfoOrBuilder getMergedChildOrBuilder() {
+      return mergedChild_ == null ? org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo.getDefaultInstance() : mergedChild_;
+    }
+
+    private byte memoizedIsInitialized = -1;
+    public final boolean isInitialized() {
+      byte isInitialized = memoizedIsInitialized;
+      if (isInitialized == 1) return true;
+      if (isInitialized == 0) return false;
+
+      if (!hasParentA()) {
+        memoizedIsInitialized = 0;
+        return false;
+      }
+      if (!hasParentB()) {
+        memoizedIsInitialized = 0;
+        return false;
+      }
+      if (!hasMergedChild()) {
+        memoizedIsInitialized = 0;
+        return false;
+      }
+      if (!getParentA().isInitialized()) {
+        memoizedIsInitialized = 0;
+        return false;
+      }
+      if (!getParentB().isInitialized()) {
+        memoizedIsInitialized = 0;
+        return false;
+      }
+      if (!getMergedChild().isInitialized()) {
+        memoizedIsInitialized = 0;
+        return false;
+      }
+      memoizedIsInitialized = 1;
+      return true;
+    }
+
+    public void writeTo(org.apache.hadoop.hbase.shaded.com.google.protobuf.CodedOutputStream output)
+                        throws java.io.IOException {
+      if (((bitField0_ & 0x00000001) == 0x00000001)) {
+        output.writeMessage(1, getParentA());
+      }
+      if (((bitField0_ & 0x00000002) == 0x00000002)) {
+        output.writeMessage(2, getParentB());
+      }
+      if (((bitField0_ & 0x00000004) == 0x00000004)) {
+        output.writeMessage(3, getMergedChild());
+      }
+      unknownFields.writeTo(output);
+    }
+
+    public int getSerializedSize() {
+      int size = memoizedSize;
+      if (size != -1) return size;
+
+      size = 0;
+      if (((bitField0_ & 0x00000001) == 0x00000001)) {
+        size += org.apache.hadoop.hbase.shaded.com.google.protobuf.CodedOutputStream
+          .computeMessageSize(1, getParentA());
+      }
+      if (((bitField0_ & 0x00000002) == 0x00000002)) {
+        size += org.apache.hadoop.hbase.shaded.com.google.protobuf.CodedOutputStream
+          .computeMessageSize(2, getParentB());
+      }
+      if (((bitField0_ & 0x00000004) == 0x00000004)) {
+        size += org.apache.hadoop.hbase.shaded.com.google.protobuf.CodedOutputStream
+          .computeMessageSize(3, getMergedChild());
+      }
+      size += unknownFields.getSerializedSize();
+      memoizedSize = size;
+      return size;
+    }
+
+    private static final long serialVersionUID = 0L;
+    @java.lang.Override
+    public boolean equals(final java.lang.Object obj) {
+      if (obj == this) {
+       return true;
+      }
+      if (!(obj instanceof org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCMergedRegionsStateData)) {
+        return super.equals(obj);
+      }
+      org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCMergedRegionsStateData other = (org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCMergedRegionsStateData) obj;
+
+      boolean result = true;
+      result = result && (hasParentA() == other.hasParentA());
+      if (hasParentA()) {
+        result = result && getParentA()
+            .equals(other.getParentA());
+      }
+      result = result && (hasParentB() == other.hasParentB());
+      if (hasParentB()) {
+        result = result && getParentB()
+            .equals(other.getParentB());
+      }
+      result = result && (hasMergedChild() == other.hasMergedChild());
+      if (hasMergedChild()) {
+        result = result && getMergedChild()
+            .equals(other.getMergedChild());
+      }
+      result = result && unknownFields.equals(other.unknownFields);
+      return result;
+    }
+
+    @java.lang.Override
+    public int hashCode() {
+      if (memoizedHashCode != 0) {
+        return memoizedHashCode;
+      }
+      int hash = 41;
+      hash = (19 * hash) + getDescriptor().hashCode();
+      if (hasParentA()) {
+        hash = (37 * hash) + PARENT_A_FIELD_NUMBER;
+        hash = (53 * hash) + getParentA().hashCode();
+      }
+      if (hasParentB()) {
+        hash = (37 * hash) + PARENT_B_FIELD_NUMBER;
+        hash = (53 * hash) + getParentB().hashCode();
+      }
+      if (hasMergedChild()) {
+        hash = (37 * hash) + MERGED_CHILD_FIELD_NUMBER;
+        hash = (53 * hash) + getMergedChild().hashCode();
+      }
+      hash = (29 * hash) + unknownFields.hashCode();
+      memoizedHashCode = hash;
+      return hash;
+    }
+
+    public static org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCMergedRegionsStateData parseFrom(
+        org.apache.hadoop.hbase.shaded.com.google.protobuf.ByteString data)
+        throws org.apache.hadoop.hbase.shaded.com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCMergedRegionsStateData parseFrom(
+        org.apache.hadoop.hbase.shaded.com.google.protobuf.ByteString data,
+        org.apache.hadoop.hbase.shaded.com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws org.apache.hadoop.hbase.shaded.com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCMergedRegionsStateData parseFrom(byte[] data)
+        throws org.apache.hadoop.hbase.shaded.com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCMergedRegionsStateData parseFrom(
+        byte[] data,
+        org.apache.hadoop.hbase.shaded.com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws org.apache.hadoop.hbase.shaded.com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCMergedRegionsStateData parseFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return org.apache.hadoop.hbase.shaded.com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
+    }
+    public static org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCMergedRegionsStateData parseFrom(
+        java.io.InputStream input,
+        org.apache.hadoop.hbase.shaded.com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return org.apache.hadoop.hbase.shaded.com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
+    }
+    public static org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCMergedRegionsStateData parseDelimitedFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return org.apache.hadoop.hbase.shaded.com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input);
+    }
+    public static org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCMergedRegionsStateData parseDelimitedFrom(
+        java.io.InputStream input,
+        org.apache.hadoop.hbase.shaded.com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return org.apache.hadoop.hbase.shaded.com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
+    }
+    public static org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCMergedRegionsStateData parseFrom(
+        org.apache.hadoop.hbase.shaded.com.google.protobuf.CodedInputStream input)
+        throws java.io.IOException {
+      return org.apache.hadoop.hbase.shaded.com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
+    }
+    public static org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCMergedRegionsStateData parseFrom(
+        org.apache.hadoop.hbase.shaded.com.google.protobuf.CodedInputStream input,
+        org.apache.hadoop.hbase.shaded.com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return org.apache.hadoop.hbase.shaded.com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
+    }
+
+    public Builder newBuilderForType() { return newBuilder(); }
+    public static Builder newBuilder() {
+      return DEFAULT_INSTANCE.toBuilder();
+    }
+    public static Builder newBuilder(org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCMergedRegionsStateData prototype) {
+      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
+    }
+    public Builder toBuilder() {
+      return this == DEFAULT_INSTANCE
+          ? new Builder() : new Builder().mergeFrom(this);
+    }
+
+    @java.lang.Override
+    protected Builder newBuilderForType(
+        org.apache.hadoop.hbase.shaded.com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+      Builder builder = new Builder(parent);
+      return builder;
+    }
+    /**
+     * Protobuf type {@code hbase.pb.GCMergedRegionsStateData}
+     */
+    public static final class Builder extends
+        org.apache.hadoop.hbase.shaded.com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
+        // @@protoc_insertion_point(builder_implements:hbase.pb.GCMergedRegionsStateData)
+        org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCMergedRegionsStateDataOrBuilder {
+      public static final org.apache.hadoop.hbase.shaded.com.google.protobuf.Descriptors.Descriptor
+          getDescriptor() {
+        return org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.internal_static_hbase_pb_GCMergedRegionsStateData_descriptor;
+      }
+
+      protected org.apache.hadoop.hbase.shaded.com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+          internalGetFieldAccessorTable() {
+        return org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.internal_static_hbase_pb_GCMergedRegionsStateData_fieldAccessorTable
+            .ensureFieldAccessorsInitialized(
+                org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCMergedRegionsStateData.class, org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCMergedRegionsStateData.Builder.class);
+      }
+
+      // Construct using org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCMergedRegionsStateData.newBuilder()
+      private Builder() {
+        maybeForceBuilderInitialization();
+      }
+
+      private Builder(
+          org.apache.hadoop.hbase.shaded.com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+        super(parent);
+        maybeForceBuilderInitialization();
+      }
+      private void maybeForceBuilderInitialization() {
+        if (org.apache.hadoop.hbase.shaded.com.google.protobuf.GeneratedMessageV3
+                .alwaysUseFieldBuilders) {
+          getParentAFieldBuilder();
+          getParentBFieldBuilder();
+          getMergedChildFieldBuilder();
+        }
+      }
+      public Builder clear() {
+        super.clear();
+        if (parentABuilder_ == null) {
+          parentA_ = null;
+        } else {
+          parentABuilder_.clear();
+        }
+        bitField0_ = (bitField0_ & ~0x00000001);
+        if (parentBBuilder_ == null) {
+          parentB_ = null;
+        } else {
+          parentBBuilder_.clear();
+        }
+        bitField0_ = (bitField0_ & ~0x00000002);
+        if (mergedChildBuilder_ == null) {
+          mergedChild_ = null;
+        } else {
+          mergedChildBuilder_.clear();
+        }
+        bitField0_ = (bitField0_ & ~0x00000004);
+        return this;
+      }
+
+      public org.apache.hadoop.hbase.shaded.com.google.protobuf.Descriptors.Descriptor
+          getDescriptorForType() {
+        return org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.internal_static_hbase_pb_GCMergedRegionsStateData_descriptor;
+      }
+
+      public org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCMergedRegionsStateData getDefaultInstanceForType() {
+        return org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCMergedRegionsStateData.getDefaultInstance();
+      }
+
+      public org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCMergedRegionsStateData build() {
+        org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCMergedRegionsStateData result = buildPartial();
+        if (!result.isInitialized()) {
+          throw newUninitializedMessageException(result);
+        }
+        return result;
+      }
+
+      public org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCMergedRegionsStateData buildPartial() {
+        org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCMergedRegionsStateData result = new org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCMergedRegionsStateData(this);
+        int from_bitField0_ = bitField0_;
+        int to_bitField0_ = 0;
+        if (((from_bitField0_ & 0x00000001) == 0x00000001)) {
+          to_bitField0_ |= 0x00000001;
+        }
+        if (parentABuilder_ == null) {
+          result.parentA_ = parentA_;
+        } else {
+          result.parentA_ = parentABuilder_.build();
+        }
+        if (((from_bitField0_ & 0x00000002) == 0x00000002)) {
+          to_bitField0_ |= 0x00000002;
+        }
+        if (parentBBuilder_ == null) {
+          result.parentB_ = parentB_;
+        } else {
+          result.parentB_ = parentBBuilder_.build();
+        }
+        if (((from_bitField0_ & 0x00000004) == 0x00000004)) {
+          to_bitField0_ |= 0x00000004;
+        }
+        if (mergedChildBuilder_ == null) {
+          result.mergedChild_ = mergedChild_;
+        } else {
+          result.mergedChild_ = mergedChildBuilder_.build();
+        }
+        result.bitField0_ = to_bitField0_;
+        onBuilt();
+        return result;
+      }
+
+      public Builder clone() {
+        return (Builder) super.clone();
+      }
+      public Builder setField(
+          org.apache.hadoop.hbase.shaded.com.google.protobuf.Descriptors.FieldDescriptor field,
+          Object value) {
+        return (Builder) super.setField(field, value);
+      }
+      public Builder clearField(
+          org.apache.hadoop.hbase.shaded.com.google.protobuf.Descriptors.FieldDescriptor field) {
+        return (Builder) super.clearField(field);
+      }
+      public Builder clearOneof(
+          org.apache.hadoop.hbase.shaded.com.google.protobuf.Descriptors.OneofDescriptor oneof) {
+        return (Builder) super.clearOneof(oneof);
+      }
+      public Builder setRepeatedField(
+          org.apache.hadoop.hbase.shaded.com.google.protobuf.Descriptors.FieldDescriptor field,
+          int index, Object value) {
+        return (Builder) super.setRepeatedField(field, index, value);
+      }
+      public Builder addRepeatedField(
+          org.apache.hadoop.hbase.shaded.com.google.protobuf.Descriptors.FieldDescriptor field,
+          Object value) {
+        return (Builder) super.addRepeatedField(field, value);
+      }
+      public Builder mergeFrom(org.apache.hadoop.hbase.shaded.com.google.protobuf.Message other) {
+        if (other instanceof org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCMergedRegionsStateData) {
+          return mergeFrom((org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCMergedRegionsStateData)other);
+        } else {
+          super.mergeFrom(other);
+          return this;
+        }
+      }
+
+      public Builder mergeFrom(org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCMergedRegionsStateData other) {
+        if (other == org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCMergedRegionsStateData.getDefaultInstance()) return this;
+        if (other.hasParentA()) {
+          mergeParentA(other.getParentA());
+        }
+        if (other.hasParentB()) {
+          mergeParentB(other.getParentB());
+        }
+        if (other.hasMergedChild()) {
+          mergeMergedChild(other.getMergedChild());
+        }
+        this.mergeUnknownFields(other.unknownFields);
+        onChanged();
+        return this;
+      }
+
+      public final boolean isInitialized() {
+        if (!hasParentA()) {
+          return false;
+        }
+        if (!hasParentB()) {
+          return false;
+        }
+        if (!hasMergedChild()) {
+          return false;
+        }
+        if (!getParentA().isInitialized()) {
+          return false;
+        }
+        if (!getParentB().isInitialized()) {
+          return false;
+        }
+        if (!getMergedChild().isInitialized()) {
+          return false;
+        }
+        return true;
+      }
+
+      public Builder mergeFrom(
+          org.apache.hadoop.hbase.shaded.com.google.protobuf.CodedInputStream input,
+          org.apache.hadoop.hbase.shaded.com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws java.io.IOException {
+        org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCMergedRegionsStateData parsedMessage = null;
+        try {
+          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+        } catch (org.apache.hadoop.hbase.shaded.com.google.protobuf.InvalidProtocolBufferException e) {
+          parsedMessage = (org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCMergedRegionsStateData) e.getUnfinishedMessage();
+          throw e.unwrapIOException();
+        } finally {
+          if (parsedMessage != null) {
+            mergeFrom(parsedMessage);
+          }
+        }
+        return this;
+      }
+      private int bitField0_;
+
+      private org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo parentA_ = null;
+      private org.apache.hadoop.hbase.shaded.com.google.protobuf.SingleFieldBuilderV3<
+          org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo, org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo.Builder, org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfoOrBuilder> parentABuilder_;
+      /**
+       * <code>required .hbase.pb.RegionInfo parent_a = 1;</code>
+       */
+      public boolean hasParentA() {
+        return ((bitField0_ & 0x00000001) == 0x00000001);
+      }
+      /**
+       * <code>required .hbase.pb.RegionInfo parent_a = 1;</code>
+       */
+      public org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo getParentA() {
+        if (parentABuilder_ == null) {
+          return parentA_ == null ? org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo.getDefaultInstance() : parentA_;
+        } else {
+          return parentABuilder_.getMessage();
+        }
+      }
+      /**
+       * <code>required .hbase.pb.RegionInfo parent_a = 1;</code>
+       */
+      public Builder setParentA(org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo value) {
+        if (parentABuilder_ == null) {
+          if (value == null) {
+            throw new NullPointerException();
+          }
+          parentA_ = value;
+          onChanged();
+        } else {
+          parentABuilder_.setMessage(value);
+        }
+        bitField0_ |= 0x00000001;
+        return this;
+      }
+      /**
+       * <code>required .hbase.pb.RegionInfo parent_a = 1;</code>
+       */
+      public Builder setParentA(
+          org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo.Builder builderForValue) {
+        if (parentABuilder_ == null) {
+          parentA_ = builderForValue.build();
+          onChanged();
+        } else {
+          parentABuilder_.setMessage(builderForValue.build());
+        }
+        bitField0_ |= 0x00000001;
+        return this;
+      }
+      /**
+       * <code>required .hbase.pb.RegionInfo parent_a = 1;</code>
+       */
+      public Builder mergeParentA(org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo value) {
+        if (parentABuilder_ == null) {
+          if (((bitField0_ & 0x00000001) == 0x00000001) &&
+              parentA_ != null &&
+              parentA_ != org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo.getDefaultInstance()) {
+            parentA_ =
+              org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo.newBuilder(parentA_).mergeFrom(value).buildPartial();
+          } else {
+            parentA_ = value;
+          }
+          onChanged();
+        } else {
+          parentABuilder_.mergeFrom(value);
+        }
+        bitField0_ |= 0x00000001;
+        return this;
+      }
+      /**
+       * <code>required .hbase.pb.RegionInfo parent_a = 1;</code>
+       */
+      public Builder clearParentA() {
+        if (parentABuilder_ == null) {
+          parentA_ = null;
+          onChanged();
+        } else {
+          parentABuilder_.clear();
+        }
+        bitField0_ = (bitField0_ & ~0x00000001);
+        return this;
+      }
+      /**
+       * <code>required .hbase.pb.RegionInfo parent_a = 1;</code>
+       */
+      public org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo.Builder getParentABuilder() {
+        bitField0_ |= 0x00000001;
+        onChanged();
+        return getParentAFieldBuilder().getBuilder();
+      }
+      /**
+       * <code>required .hbase.pb.RegionInfo parent_a = 1;</code>
+       */
+      public org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfoOrBuilder getParentAOrBuilder() {
+        if (parentABuilder_ != null) {
+          return parentABuilder_.getMessageOrBuilder();
+        } else {
+          return parentA_ == null ?
+              org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo.getDefaultInstance() : parentA_;
+        }
+      }
+      /**
+       * <code>required .hbase.pb.RegionInfo parent_a = 1;</code>
+       */
+      private org.apache.hadoop.hbase.shaded.com.google.protobuf.SingleFieldBuilderV3<
+          org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo, org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo.Builder, org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfoOrBuilder> 
+          getParentAFieldBuilder() {
+        if (parentABuilder_ == null) {
+          parentABuilder_ = new org.apache.hadoop.hbase.shaded.com.google.protobuf.SingleFieldBuilderV3<
+              org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo, org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo.Builder, org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfoOrBuilder>(
+                  getParentA(),
+                  getParentForChildren(),
+                  isClean());
+          parentA_ = null;
+        }
+        return parentABuilder_;
+      }
+
+      private org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo parentB_ = null;
+      private org.apache.hadoop.hbase.shaded.com.google.protobuf.SingleFieldBuilderV3<
+          org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo, org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo.Builder, org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfoOrBuilder> parentBBuilder_;
+      /**
+       * <code>required .hbase.pb.RegionInfo parent_b = 2;</code>
+       */
+      public boolean hasParentB() {
+        return ((bitField0_ & 0x00000002) == 0x00000002);
+      }
+      /**
+       * <code>required .hbase.pb.RegionInfo parent_b = 2;</code>
+       */
+      public org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo getParentB() {
+        if (parentBBuilder_ == null) {
+          return parentB_ == null ? org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo.getDefaultInstance() : parentB_;
+        } else {
+          return parentBBuilder_.getMessage();
+        }
+      }
+      /**
+       * <code>required .hbase.pb.RegionInfo parent_b = 2;</code>
+       */
+      public Builder setParentB(org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo value) {
+        if (parentBBuilder_ == null) {
+          if (value == null) {
+            throw new NullPointerException();
+          }
+          parentB_ = value;
+          onChanged();
+        } else {
+          parentBBuilder_.setMessage(value);
+        }
+        bitField0_ |= 0x00000002;
+        return this;
+      }
+      /**
+       * <code>required .hbase.pb.RegionInfo parent_b = 2;</code>
+       */
+      public Builder setParentB(
+          org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo.Builder builderForValue) {
+        if (parentBBuilder_ == null) {
+          parentB_ = builderForValue.build();
+          onChanged();
+        } else {
+          parentBBuilder_.setMessage(builderForValue.build());
+        }
+        bitField0_ |= 0x00000002;
+        return this;
+      }
+      /**
+       * <code>required .hbase.pb.RegionInfo parent_b = 2;</code>
+       */
+      public Builder mergeParentB(org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo value) {
+        if (parentBBuilder_ == null) {
+          if (((bitField0_ & 0x00000002) == 0x00000002) &&
+              parentB_ != null &&
+              parentB_ != org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo.getDefaultInstance()) {
+            parentB_ =
+              org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo.newBuilder(parentB_).mergeFrom(value).buildPartial();
+          } else {
+            parentB_ = value;
+          }
+          onChanged();
+        } else {
+          parentBBuilder_.mergeFrom(value);
+        }
+        bitField0_ |= 0x00000002;
+        return this;
+      }
+      /**
+       * <code>required .hbase.pb.RegionInfo parent_b = 2;</code>
+       */
+      public Builder clearParentB() {
+        if (parentBBuilder_ == null) {
+          parentB_ = null;
+          onChanged();
+        } else {
+          parentBBuilder_.clear();
+        }
+        bitField0_ = (bitField0_ & ~0x00000002);
+        return this;
+      }
+      /**
+       * <code>required .hbase.pb.RegionInfo parent_b = 2;</code>
+       */
+      public org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo.Builder getParentBBuilder() {
+        bitField0_ |= 0x00000002;
+        onChanged();
+        return getParentBFieldBuilder().getBuilder();
+      }
+      /**
+       * <code>required .hbase.pb.RegionInfo parent_b = 2;</code>
+       */
+      public org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfoOrBuilder getParentBOrBuilder() {
+        if (parentBBuilder_ != null) {
+          return parentBBuilder_.getMessageOrBuilder();
+        } else {
+          return parentB_ == null ?
+              org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo.getDefaultInstance() : parentB_;
+        }
+      }
+      /**
+       * <code>required .hbase.pb.RegionInfo parent_b = 2;</code>
+       */
+      private org.apache.hadoop.hbase.shaded.com.google.protobuf.SingleFieldBuilderV3<
+          org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo, org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo.Builder, org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfoOrBuilder> 
+          getParentBFieldBuilder() {
+        if (parentBBuilder_ == null) {
+          parentBBuilder_ = new org.apache.hadoop.hbase.shaded.com.google.protobuf.SingleFieldBuilderV3<
+              org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo, org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo.Builder, org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfoOrBuilder>(
+                  getParentB(),
+                  getParentForChildren(),
+                  isClean());
+          parentB_ = null;
+        }
+        return parentBBuilder_;
+      }
+
+      private org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo mergedChild_ = null;
+      private org.apache.hadoop.hbase.shaded.com.google.protobuf.SingleFieldBuilderV3<
+          org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo, org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo.Builder, org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfoOrBuilder> mergedChildBuilder_;
+      /**
+       * <code>required .hbase.pb.RegionInfo merged_child = 3;</code>
+       */
+      public boolean hasMergedChild() {
+        return ((bitField0_ & 0x00000004) == 0x00000004);
+      }
+      /**
+       * <code>required .hbase.pb.RegionInfo merged_child = 3;</code>
+       */
+      public org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo getMergedChild() {
+        if (mergedChildBuilder_ == null) {
+          return mergedChild_ == null ? org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo.getDefaultInstance() : mergedChild_;
+        } else {
+          return mergedChildBuilder_.getMessage();
+        }
+      }
+      /**
+       * <code>required .hbase.pb.RegionInfo merged_child = 3;</code>
+       */
+      public Builder setMergedChild(org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo value) {
+        if (mergedChildBuilder_ == null) {
+          if (value == null) {
+            throw new NullPointerException();
+          }
+          mergedChild_ = value;
+          onChanged();
+        } else {
+          mergedChildBuilder_.setMessage(value);
+        }
+        bitField0_ |= 0x00000004;
+        return this;
+      }
+      /**
+       * <code>required .hbase.pb.RegionInfo merged_child = 3;</code>
+       */
+      public Builder setMergedChild(
+          org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo.Builder builderForValue) {
+        if (mergedChildBuilder_ == null) {
+          mergedChild_ = builderForValue.build();
+          onChanged();
+        } else {
+          mergedChildBuilder_.setMessage(builderForValue.build());
+        }
+        bitField0_ |= 0x00000004;
+        return this;
+      }
+      /**
+       * <code>required .hbase.pb.RegionInfo merged_child = 3;</code>
+       */
+      public Builder mergeMergedChild(org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo value) {
+        if (mergedChildBuilder_ == null) {
+          if (((bitField0_ & 0x00000004) == 0x00000004) &&
+              mergedChild_ != null &&
+              mergedChild_ != org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo.getDefaultInstance()) {
+            mergedChild_ =
+              org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo.newBuilder(mergedChild_).mergeFrom(value).buildPartial();
+          } else {
+            mergedChild_ = value;
+          }
+          onChanged();
+        } else {
+          mergedChildBuilder_.mergeFrom(value);
+        }
+        bitField0_ |= 0x00000004;
+        return this;
+      }
+      /**
+       * <code>required .hbase.pb.RegionInfo merged_child = 3;</code>
+       */
+      public Builder clearMergedChild() {
+        if (mergedChildBuilder_ == null) {
+          mergedChild_ = null;
+          onChanged();
+        } else {
+          mergedChildBuilder_.clear();
+        }
+        bitField0_ = (bitField0_ & ~0x00000004);
+        return this;
+      }
+      /**
+       * <code>required .hbase.pb.RegionInfo merged_child = 3;</code>
+       */
+      public org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo.Builder getMergedChildBuilder() {
+        bitField0_ |= 0x00000004;
+        onChanged();
+        return getMergedChildFieldBuilder().getBuilder();
+      }
+      /**
+       * <code>required .hbase.pb.RegionInfo merged_child = 3;</code>
+       */
+      public org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfoOrBuilder getMergedChildOrBuilder() {
+        if (mergedChildBuilder_ != null) {
+          return mergedChildBuilder_.getMessageOrBuilder();
+        } else {
+          return mergedChild_ == null ?
+              org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo.getDefaultInstance() : mergedChild_;
+        }
+      }
+      /**
+       * <code>required .hbase.pb.RegionInfo merged_child = 3;</code>
+       */
+      private org.apache.hadoop.hbase.shaded.com.google.protobuf.SingleFieldBuilderV3<
+          org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo, org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo.Builder, org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfoOrBuilder> 
+          getMergedChildFieldBuilder() {
+        if (mergedChildBuilder_ == null) {
+          mergedChildBuilder_ = new org.apache.hadoop.hbase.shaded.com.google.protobuf.SingleFieldBuilderV3<
+              org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo, org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo.Builder, org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfoOrBuilder>(
+                  getMergedChild(),
+                  getParentForChildren(),
+                  isClean());
+          mergedChild_ = null;
+        }
+        return mergedChildBuilder_;
+      }
+      public final Builder setUnknownFields(
+          final org.apache.hadoop.hbase.shaded.com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.setUnknownFields(unknownFields);
+      }
+
+      public final Builder mergeUnknownFields(
+          final org.apache.hadoop.hbase.shaded.com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.mergeUnknownFields(unknownFields);
+      }
+
+
+      // @@protoc_insertion_point(builder_scope:hbase.pb.GCMergedRegionsStateData)
+    }
+
+    // @@protoc_insertion_point(class_scope:hbase.pb.GCMergedRegionsStateData)
+    private static final org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCMergedRegionsStateData DEFAULT_INSTANCE;
+    static {
+      DEFAULT_INSTANCE = new org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCMergedRegionsStateData();
+    }
+
+    public static org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.GCMergedRegionsStateData getDefaultInstance() {
+      return DEFAULT_INSTANCE;
+    }
+
+    @java.lang.Deprecated public static final org.apache.hadoop.hbase.shaded.com.google.protobuf.Parser<GCMergedRegionsStateData>
+        PARSER = new org.apache.hadoop.hbase.shaded.com.google.protobuf.AbstractParser<GCMergedRegionsStateData>() {
+      public GCMergedRegionsStateData parsePartialFrom(
+          org.apache.hadoop.hbase.shaded.com.google.protobuf.CodedInputStream input,
+          org.apache.hadoop.hbase.shaded.com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws org.apache.hadoop.hbase.shaded.com.google.protobuf.InvalidProtocolBufferException {
+          return new GCMergedRegionsStateData(input, extensionRegistry);
+      }
+    };
+
+    public static org.apache.hadoop.hbase.shaded.com.google.

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