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From: jmhsieh@apache.org
To: commits@hbase.apache.org
Date: Thu, 14 Jan 2016 17:08:35 -0000
Message-Id: <63e8575067784b06b8f3eb0991c8e158@git.apache.org>
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Subject: [21/50] [abbrv] hbase git commit: HBASE-14888 ClusterSchema: Add
 Namespace Operations

http://git-wip-us.apache.org/repos/asf/hbase/blob/46303dfd/hbase-protocol/src/main/java/org/apache/hadoop/hbase/protobuf/generated/MasterProtos.java
----------------------------------------------------------------------
diff --git a/hbase-protocol/src/main/java/org/apache/hadoop/hbase/protobuf/generated/MasterProtos.java b/hbase-protocol/src/main/java/org/apache/hadoop/hbase/protobuf/generated/MasterProtos.java
index 6400887..043d549 100644
--- a/hbase-protocol/src/main/java/org/apache/hadoop/hbase/protobuf/generated/MasterProtos.java
+++ b/hbase-protocol/src/main/java/org/apache/hadoop/hbase/protobuf/generated/MasterProtos.java
@@ -17439,6 +17439,16 @@ public final class MasterProtos {
 
   public interface CreateNamespaceResponseOrBuilder
       extends com.google.protobuf.MessageOrBuilder {
+
+    // optional uint64 proc_id = 1;
+    /**
+     * <code>optional uint64 proc_id = 1;</code>
+     */
+    boolean hasProcId();
+    /**
+     * <code>optional uint64 proc_id = 1;</code>
+     */
+    long getProcId();
   }
   /**
    * Protobuf type {@code hbase.pb.CreateNamespaceResponse}
@@ -17473,6 +17483,7 @@ public final class MasterProtos {
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws com.google.protobuf.InvalidProtocolBufferException {
       initFields();
+      int mutable_bitField0_ = 0;
       com.google.protobuf.UnknownFieldSet.Builder unknownFields =
           com.google.protobuf.UnknownFieldSet.newBuilder();
       try {
@@ -17490,6 +17501,11 @@ public final class MasterProtos {
               }
               break;
             }
+            case 8: {
+              bitField0_ |= 0x00000001;
+              procId_ = input.readUInt64();
+              break;
+            }
           }
         }
       } catch (com.google.protobuf.InvalidProtocolBufferException e) {
@@ -17529,7 +17545,25 @@ public final class MasterProtos {
       return PARSER;
     }
 
+    private int bitField0_;
+    // optional uint64 proc_id = 1;
+    public static final int PROC_ID_FIELD_NUMBER = 1;
+    private long procId_;
+    /**
+     * <code>optional uint64 proc_id = 1;</code>
+     */
+    public boolean hasProcId() {
+      return ((bitField0_ & 0x00000001) == 0x00000001);
+    }
+    /**
+     * <code>optional uint64 proc_id = 1;</code>
+     */
+    public long getProcId() {
+      return procId_;
+    }
+
     private void initFields() {
+      procId_ = 0L;
     }
     private byte memoizedIsInitialized = -1;
     public final boolean isInitialized() {
@@ -17543,6 +17577,9 @@ public final class MasterProtos {
     public void writeTo(com.google.protobuf.CodedOutputStream output)
                         throws java.io.IOException {
       getSerializedSize();
+      if (((bitField0_ & 0x00000001) == 0x00000001)) {
+        output.writeUInt64(1, procId_);
+      }
       getUnknownFields().writeTo(output);
     }
 
@@ -17552,6 +17589,10 @@ public final class MasterProtos {
       if (size != -1) return size;
 
       size = 0;
+      if (((bitField0_ & 0x00000001) == 0x00000001)) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeUInt64Size(1, procId_);
+      }
       size += getUnknownFields().getSerializedSize();
       memoizedSerializedSize = size;
       return size;
@@ -17575,6 +17616,11 @@ public final class MasterProtos {
       org.apache.hadoop.hbase.protobuf.generated.MasterProtos.CreateNamespaceResponse other = (org.apache.hadoop.hbase.protobuf.generated.MasterProtos.CreateNamespaceResponse) obj;
 
       boolean result = true;
+      result = result && (hasProcId() == other.hasProcId());
+      if (hasProcId()) {
+        result = result && (getProcId()
+            == other.getProcId());
+      }
       result = result &&
           getUnknownFields().equals(other.getUnknownFields());
       return result;
@@ -17588,6 +17634,10 @@ public final class MasterProtos {
       }
       int hash = 41;
       hash = (19 * hash) + getDescriptorForType().hashCode();
+      if (hasProcId()) {
+        hash = (37 * hash) + PROC_ID_FIELD_NUMBER;
+        hash = (53 * hash) + hashLong(getProcId());
+      }
       hash = (29 * hash) + getUnknownFields().hashCode();
       memoizedHashCode = hash;
       return hash;
@@ -17697,6 +17747,8 @@ public final class MasterProtos {
 
       public Builder clear() {
         super.clear();
+        procId_ = 0L;
+        bitField0_ = (bitField0_ & ~0x00000001);
         return this;
       }
 
@@ -17723,6 +17775,13 @@ public final class MasterProtos {
 
       public org.apache.hadoop.hbase.protobuf.generated.MasterProtos.CreateNamespaceResponse buildPartial() {
         org.apache.hadoop.hbase.protobuf.generated.MasterProtos.CreateNamespaceResponse result = new org.apache.hadoop.hbase.protobuf.generated.MasterProtos.CreateNamespaceResponse(this);
+        int from_bitField0_ = bitField0_;
+        int to_bitField0_ = 0;
+        if (((from_bitField0_ & 0x00000001) == 0x00000001)) {
+          to_bitField0_ |= 0x00000001;
+        }
+        result.procId_ = procId_;
+        result.bitField0_ = to_bitField0_;
         onBuilt();
         return result;
       }
@@ -17738,6 +17797,9 @@ public final class MasterProtos {
 
       public Builder mergeFrom(org.apache.hadoop.hbase.protobuf.generated.MasterProtos.CreateNamespaceResponse other) {
         if (other == org.apache.hadoop.hbase.protobuf.generated.MasterProtos.CreateNamespaceResponse.getDefaultInstance()) return this;
+        if (other.hasProcId()) {
+          setProcId(other.getProcId());
+        }
         this.mergeUnknownFields(other.getUnknownFields());
         return this;
       }
@@ -17763,6 +17825,40 @@ public final class MasterProtos {
         }
         return this;
       }
+      private int bitField0_;
+
+      // optional uint64 proc_id = 1;
+      private long procId_ ;
+      /**
+       * <code>optional uint64 proc_id = 1;</code>
+       */
+      public boolean hasProcId() {
+        return ((bitField0_ & 0x00000001) == 0x00000001);
+      }
+      /**
+       * <code>optional uint64 proc_id = 1;</code>
+       */
+      public long getProcId() {
+        return procId_;
+      }
+      /**
+       * <code>optional uint64 proc_id = 1;</code>
+       */
+      public Builder setProcId(long value) {
+        bitField0_ |= 0x00000001;
+        procId_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>optional uint64 proc_id = 1;</code>
+       */
+      public Builder clearProcId() {
+        bitField0_ = (bitField0_ & ~0x00000001);
+        procId_ = 0L;
+        onChanged();
+        return this;
+      }
 
       // @@protoc_insertion_point(builder_scope:hbase.pb.CreateNamespaceResponse)
     }
@@ -18474,6 +18570,16 @@ public final class MasterProtos {
 
   public interface DeleteNamespaceResponseOrBuilder
       extends com.google.protobuf.MessageOrBuilder {
+
+    // optional uint64 proc_id = 1;
+    /**
+     * <code>optional uint64 proc_id = 1;</code>
+     */
+    boolean hasProcId();
+    /**
+     * <code>optional uint64 proc_id = 1;</code>
+     */
+    long getProcId();
   }
   /**
    * Protobuf type {@code hbase.pb.DeleteNamespaceResponse}
@@ -18508,6 +18614,7 @@ public final class MasterProtos {
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws com.google.protobuf.InvalidProtocolBufferException {
       initFields();
+      int mutable_bitField0_ = 0;
       com.google.protobuf.UnknownFieldSet.Builder unknownFields =
           com.google.protobuf.UnknownFieldSet.newBuilder();
       try {
@@ -18525,6 +18632,11 @@ public final class MasterProtos {
               }
               break;
             }
+            case 8: {
+              bitField0_ |= 0x00000001;
+              procId_ = input.readUInt64();
+              break;
+            }
           }
         }
       } catch (com.google.protobuf.InvalidProtocolBufferException e) {
@@ -18564,7 +18676,25 @@ public final class MasterProtos {
       return PARSER;
     }
 
+    private int bitField0_;
+    // optional uint64 proc_id = 1;
+    public static final int PROC_ID_FIELD_NUMBER = 1;
+    private long procId_;
+    /**
+     * <code>optional uint64 proc_id = 1;</code>
+     */
+    public boolean hasProcId() {
+      return ((bitField0_ & 0x00000001) == 0x00000001);
+    }
+    /**
+     * <code>optional uint64 proc_id = 1;</code>
+     */
+    public long getProcId() {
+      return procId_;
+    }
+
     private void initFields() {
+      procId_ = 0L;
     }
     private byte memoizedIsInitialized = -1;
     public final boolean isInitialized() {
@@ -18578,6 +18708,9 @@ public final class MasterProtos {
     public void writeTo(com.google.protobuf.CodedOutputStream output)
                         throws java.io.IOException {
       getSerializedSize();
+      if (((bitField0_ & 0x00000001) == 0x00000001)) {
+        output.writeUInt64(1, procId_);
+      }
       getUnknownFields().writeTo(output);
     }
 
@@ -18587,6 +18720,10 @@ public final class MasterProtos {
       if (size != -1) return size;
 
       size = 0;
+      if (((bitField0_ & 0x00000001) == 0x00000001)) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeUInt64Size(1, procId_);
+      }
       size += getUnknownFields().getSerializedSize();
       memoizedSerializedSize = size;
       return size;
@@ -18610,6 +18747,11 @@ public final class MasterProtos {
       org.apache.hadoop.hbase.protobuf.generated.MasterProtos.DeleteNamespaceResponse other = (org.apache.hadoop.hbase.protobuf.generated.MasterProtos.DeleteNamespaceResponse) obj;
 
       boolean result = true;
+      result = result && (hasProcId() == other.hasProcId());
+      if (hasProcId()) {
+        result = result && (getProcId()
+            == other.getProcId());
+      }
       result = result &&
           getUnknownFields().equals(other.getUnknownFields());
       return result;
@@ -18623,6 +18765,10 @@ public final class MasterProtos {
       }
       int hash = 41;
       hash = (19 * hash) + getDescriptorForType().hashCode();
+      if (hasProcId()) {
+        hash = (37 * hash) + PROC_ID_FIELD_NUMBER;
+        hash = (53 * hash) + hashLong(getProcId());
+      }
       hash = (29 * hash) + getUnknownFields().hashCode();
       memoizedHashCode = hash;
       return hash;
@@ -18732,6 +18878,8 @@ public final class MasterProtos {
 
       public Builder clear() {
         super.clear();
+        procId_ = 0L;
+        bitField0_ = (bitField0_ & ~0x00000001);
         return this;
       }
 
@@ -18758,6 +18906,13 @@ public final class MasterProtos {
 
       public org.apache.hadoop.hbase.protobuf.generated.MasterProtos.DeleteNamespaceResponse buildPartial() {
         org.apache.hadoop.hbase.protobuf.generated.MasterProtos.DeleteNamespaceResponse result = new org.apache.hadoop.hbase.protobuf.generated.MasterProtos.DeleteNamespaceResponse(this);
+        int from_bitField0_ = bitField0_;
+        int to_bitField0_ = 0;
+        if (((from_bitField0_ & 0x00000001) == 0x00000001)) {
+          to_bitField0_ |= 0x00000001;
+        }
+        result.procId_ = procId_;
+        result.bitField0_ = to_bitField0_;
         onBuilt();
         return result;
       }
@@ -18773,6 +18928,9 @@ public final class MasterProtos {
 
       public Builder mergeFrom(org.apache.hadoop.hbase.protobuf.generated.MasterProtos.DeleteNamespaceResponse other) {
         if (other == org.apache.hadoop.hbase.protobuf.generated.MasterProtos.DeleteNamespaceResponse.getDefaultInstance()) return this;
+        if (other.hasProcId()) {
+          setProcId(other.getProcId());
+        }
         this.mergeUnknownFields(other.getUnknownFields());
         return this;
       }
@@ -18798,6 +18956,40 @@ public final class MasterProtos {
         }
         return this;
       }
+      private int bitField0_;
+
+      // optional uint64 proc_id = 1;
+      private long procId_ ;
+      /**
+       * <code>optional uint64 proc_id = 1;</code>
+       */
+      public boolean hasProcId() {
+        return ((bitField0_ & 0x00000001) == 0x00000001);
+      }
+      /**
+       * <code>optional uint64 proc_id = 1;</code>
+       */
+      public long getProcId() {
+        return procId_;
+      }
+      /**
+       * <code>optional uint64 proc_id = 1;</code>
+       */
+      public Builder setProcId(long value) {
+        bitField0_ |= 0x00000001;
+        procId_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>optional uint64 proc_id = 1;</code>
+       */
+      public Builder clearProcId() {
+        bitField0_ = (bitField0_ & ~0x00000001);
+        procId_ = 0L;
+        onChanged();
+        return this;
+      }
 
       // @@protoc_insertion_point(builder_scope:hbase.pb.DeleteNamespaceResponse)
     }
@@ -19553,6 +19745,16 @@ public final class MasterProtos {
 
   public interface ModifyNamespaceResponseOrBuilder
       extends com.google.protobuf.MessageOrBuilder {
+
+    // optional uint64 proc_id = 1;
+    /**
+     * <code>optional uint64 proc_id = 1;</code>
+     */
+    boolean hasProcId();
+    /**
+     * <code>optional uint64 proc_id = 1;</code>
+     */
+    long getProcId();
   }
   /**
    * Protobuf type {@code hbase.pb.ModifyNamespaceResponse}
@@ -19587,6 +19789,7 @@ public final class MasterProtos {
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws com.google.protobuf.InvalidProtocolBufferException {
       initFields();
+      int mutable_bitField0_ = 0;
       com.google.protobuf.UnknownFieldSet.Builder unknownFields =
           com.google.protobuf.UnknownFieldSet.newBuilder();
       try {
@@ -19604,6 +19807,11 @@ public final class MasterProtos {
               }
               break;
             }
+            case 8: {
+              bitField0_ |= 0x00000001;
+              procId_ = input.readUInt64();
+              break;
+            }
           }
         }
       } catch (com.google.protobuf.InvalidProtocolBufferException e) {
@@ -19643,7 +19851,25 @@ public final class MasterProtos {
       return PARSER;
     }
 
+    private int bitField0_;
+    // optional uint64 proc_id = 1;
+    public static final int PROC_ID_FIELD_NUMBER = 1;
+    private long procId_;
+    /**
+     * <code>optional uint64 proc_id = 1;</code>
+     */
+    public boolean hasProcId() {
+      return ((bitField0_ & 0x00000001) == 0x00000001);
+    }
+    /**
+     * <code>optional uint64 proc_id = 1;</code>
+     */
+    public long getProcId() {
+      return procId_;
+    }
+
     private void initFields() {
+      procId_ = 0L;
     }
     private byte memoizedIsInitialized = -1;
     public final boolean isInitialized() {
@@ -19657,6 +19883,9 @@ public final class MasterProtos {
     public void writeTo(com.google.protobuf.CodedOutputStream output)
                         throws java.io.IOException {
       getSerializedSize();
+      if (((bitField0_ & 0x00000001) == 0x00000001)) {
+        output.writeUInt64(1, procId_);
+      }
       getUnknownFields().writeTo(output);
     }
 
@@ -19666,6 +19895,10 @@ public final class MasterProtos {
       if (size != -1) return size;
 
       size = 0;
+      if (((bitField0_ & 0x00000001) == 0x00000001)) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeUInt64Size(1, procId_);
+      }
       size += getUnknownFields().getSerializedSize();
       memoizedSerializedSize = size;
       return size;
@@ -19689,6 +19922,11 @@ public final class MasterProtos {
       org.apache.hadoop.hbase.protobuf.generated.MasterProtos.ModifyNamespaceResponse other = (org.apache.hadoop.hbase.protobuf.generated.MasterProtos.ModifyNamespaceResponse) obj;
 
       boolean result = true;
+      result = result && (hasProcId() == other.hasProcId());
+      if (hasProcId()) {
+        result = result && (getProcId()
+            == other.getProcId());
+      }
       result = result &&
           getUnknownFields().equals(other.getUnknownFields());
       return result;
@@ -19702,6 +19940,10 @@ public final class MasterProtos {
       }
       int hash = 41;
       hash = (19 * hash) + getDescriptorForType().hashCode();
+      if (hasProcId()) {
+        hash = (37 * hash) + PROC_ID_FIELD_NUMBER;
+        hash = (53 * hash) + hashLong(getProcId());
+      }
       hash = (29 * hash) + getUnknownFields().hashCode();
       memoizedHashCode = hash;
       return hash;
@@ -19811,6 +20053,8 @@ public final class MasterProtos {
 
       public Builder clear() {
         super.clear();
+        procId_ = 0L;
+        bitField0_ = (bitField0_ & ~0x00000001);
         return this;
       }
 
@@ -19837,6 +20081,13 @@ public final class MasterProtos {
 
       public org.apache.hadoop.hbase.protobuf.generated.MasterProtos.ModifyNamespaceResponse buildPartial() {
         org.apache.hadoop.hbase.protobuf.generated.MasterProtos.ModifyNamespaceResponse result = new org.apache.hadoop.hbase.protobuf.generated.MasterProtos.ModifyNamespaceResponse(this);
+        int from_bitField0_ = bitField0_;
+        int to_bitField0_ = 0;
+        if (((from_bitField0_ & 0x00000001) == 0x00000001)) {
+          to_bitField0_ |= 0x00000001;
+        }
+        result.procId_ = procId_;
+        result.bitField0_ = to_bitField0_;
         onBuilt();
         return result;
       }
@@ -19852,6 +20103,9 @@ public final class MasterProtos {
 
       public Builder mergeFrom(org.apache.hadoop.hbase.protobuf.generated.MasterProtos.ModifyNamespaceResponse other) {
         if (other == org.apache.hadoop.hbase.protobuf.generated.MasterProtos.ModifyNamespaceResponse.getDefaultInstance()) return this;
+        if (other.hasProcId()) {
+          setProcId(other.getProcId());
+        }
         this.mergeUnknownFields(other.getUnknownFields());
         return this;
       }
@@ -19877,6 +20131,40 @@ public final class MasterProtos {
         }
         return this;
       }
+      private int bitField0_;
+
+      // optional uint64 proc_id = 1;
+      private long procId_ ;
+      /**
+       * <code>optional uint64 proc_id = 1;</code>
+       */
+      public boolean hasProcId() {
+        return ((bitField0_ & 0x00000001) == 0x00000001);
+      }
+      /**
+       * <code>optional uint64 proc_id = 1;</code>
+       */
+      public long getProcId() {
+        return procId_;
+      }
+      /**
+       * <code>optional uint64 proc_id = 1;</code>
+       */
+      public Builder setProcId(long value) {
+        bitField0_ |= 0x00000001;
+        procId_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>optional uint64 proc_id = 1;</code>
+       */
+      public Builder clearProcId() {
+        bitField0_ = (bitField0_ & ~0x00000001);
+        procId_ = 0L;
+        onChanged();
+        return this;
+      }
 
       // @@protoc_insertion_point(builder_scope:hbase.pb.ModifyNamespaceResponse)
     }
@@ -61891,255 +62179,257 @@ public final class MasterProtos {
       "\001(\004\"~\n\026CreateNamespaceRequest\022:\n\023namespa" +
       "ceDescriptor\030\001 \002(\0132\035.hbase.pb.NamespaceD" +
       "escriptor\022\026\n\013nonce_group\030\002 \001(\004:\0010\022\020\n\005non",
-      "ce\030\003 \001(\004:\0010\"\031\n\027CreateNamespaceResponse\"Y" +
-      "\n\026DeleteNamespaceRequest\022\025\n\rnamespaceNam" +
-      "e\030\001 \002(\t\022\026\n\013nonce_group\030\002 \001(\004:\0010\022\020\n\005nonce" +
-      "\030\003 \001(\004:\0010\"\031\n\027DeleteNamespaceResponse\"~\n\026" +
-      "ModifyNamespaceRequest\022:\n\023namespaceDescr" +
-      "iptor\030\001 \002(\0132\035.hbase.pb.NamespaceDescript" +
-      "or\022\026\n\013nonce_group\030\002 \001(\004:\0010\022\020\n\005nonce\030\003 \001(" +
-      "\004:\0010\"\031\n\027ModifyNamespaceResponse\"6\n\035GetNa" +
-      "mespaceDescriptorRequest\022\025\n\rnamespaceNam" +
-      "e\030\001 \002(\t\"\\\n\036GetNamespaceDescriptorRespons",
-      "e\022:\n\023namespaceDescriptor\030\001 \002(\0132\035.hbase.p" +
-      "b.NamespaceDescriptor\"!\n\037ListNamespaceDe" +
-      "scriptorsRequest\"^\n ListNamespaceDescrip" +
-      "torsResponse\022:\n\023namespaceDescriptor\030\001 \003(" +
-      "\0132\035.hbase.pb.NamespaceDescriptor\"?\n&List" +
-      "TableDescriptorsByNamespaceRequest\022\025\n\rna" +
-      "mespaceName\030\001 \002(\t\"U\n\'ListTableDescriptor" +
-      "sByNamespaceResponse\022*\n\013tableSchema\030\001 \003(" +
-      "\0132\025.hbase.pb.TableSchema\"9\n ListTableNam" +
-      "esByNamespaceRequest\022\025\n\rnamespaceName\030\001 ",
-      "\002(\t\"K\n!ListTableNamesByNamespaceResponse" +
-      "\022&\n\ttableName\030\001 \003(\0132\023.hbase.pb.TableName" +
-      "\"\021\n\017ShutdownRequest\"\022\n\020ShutdownResponse\"" +
-      "\023\n\021StopMasterRequest\"\024\n\022StopMasterRespon" +
-      "se\"\037\n\016BalanceRequest\022\r\n\005force\030\001 \001(\010\"\'\n\017B" +
-      "alanceResponse\022\024\n\014balancer_ran\030\001 \002(\010\"<\n\031" +
-      "SetBalancerRunningRequest\022\n\n\002on\030\001 \002(\010\022\023\n" +
-      "\013synchronous\030\002 \001(\010\"8\n\032SetBalancerRunning" +
-      "Response\022\032\n\022prev_balance_value\030\001 \001(\010\"\032\n\030" +
-      "IsBalancerEnabledRequest\",\n\031IsBalancerEn",
-      "abledResponse\022\017\n\007enabled\030\001 \002(\010\"\022\n\020Normal" +
-      "izeRequest\"+\n\021NormalizeResponse\022\026\n\016norma" +
-      "lizer_ran\030\001 \002(\010\")\n\033SetNormalizerRunningR" +
-      "equest\022\n\n\002on\030\001 \002(\010\"=\n\034SetNormalizerRunni" +
-      "ngResponse\022\035\n\025prev_normalizer_value\030\001 \001(" +
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+      "t\022\'\n\ntable_name\030\001 \002(\0132\023.hbase.pb.TableNa" +
+      "me\"B\n\025GetTableStateResponse\022)\n\013table_sta" +
+      "te\030\001 \002(\0132\024.hbase.pb.TableState\"\031\n\027GetClu",
+      "sterStatusRequest\"K\n\030GetClusterStatusRes" +
+      "ponse\022/\n\016cluster_status\030\001 \002(\0132\027.hbase.pb" +
+      ".ClusterStatus\"\030\n\026IsMasterRunningRequest" +
+      "\"4\n\027IsMasterRunningResponse\022\031\n\021is_master" +
+      "_running\030\001 \002(\010\"I\n\024ExecProcedureRequest\0221" +
+      "\n\tprocedure\030\001 \002(\0132\036.hbase.pb.ProcedureDe" +
+      "scription\"F\n\025ExecProcedureResponse\022\030\n\020ex" +
+      "pected_timeout\030\001 \001(\003\022\023\n\013return_data\030\002 \001(" +
+      "\014\"K\n\026IsProcedureDoneRequest\0221\n\tprocedure" +
+      "\030\001 \001(\0132\036.hbase.pb.ProcedureDescription\"`",
+      "\n\027IsProcedureDoneResponse\022\023\n\004done\030\001 \001(\010:" +
+      "\005false\0220\n\010snapshot\030\002 \001(\0132\036.hbase.pb.Proc" +
+      "edureDescription\",\n\031GetProcedureResultRe" +
+      "quest\022\017\n\007proc_id\030\001 \002(\004\"\371\001\n\032GetProcedureR" +
+      "esultResponse\0229\n\005state\030\001 \002(\0162*.hbase.pb." +
+      "GetProcedureResultResponse.State\022\022\n\nstar" +
+      "t_time\030\002 \001(\004\022\023\n\013last_update\030\003 \001(\004\022\016\n\006res" +
+      "ult\030\004 \001(\014\0224\n\texception\030\005 \001(\0132!.hbase.pb." +
+      "ForeignExceptionMessage\"1\n\005State\022\r\n\tNOT_" +
+      "FOUND\020\000\022\013\n\007RUNNING\020\001\022\014\n\010FINISHED\020\002\"M\n\025Ab",
+      "ortProcedureRequest\022\017\n\007proc_id\030\001 \002(\004\022#\n\025" +
+      "mayInterruptIfRunning\030\002 \001(\010:\004true\"6\n\026Abo" +
+      "rtProcedureResponse\022\034\n\024is_procedure_abor" +
+      "ted\030\001 \002(\010\"\027\n\025ListProceduresRequest\"@\n\026Li" +
+      "stProceduresResponse\022&\n\tprocedure\030\001 \003(\0132" +
+      "\023.hbase.pb.Procedure\"\315\001\n\017SetQuotaRequest" +
+      "\022\021\n\tuser_name\030\001 \001(\t\022\022\n\nuser_group\030\002 \001(\t\022" +
+      "\021\n\tnamespace\030\003 \001(\t\022\'\n\ntable_name\030\004 \001(\0132\023" +
+      ".hbase.pb.TableName\022\022\n\nremove_all\030\005 \001(\010\022" +
+      "\026\n\016bypass_globals\030\006 \001(\010\022+\n\010throttle\030\007 \001(",
+      "\0132\031.hbase.pb.ThrottleRequest\"\022\n\020SetQuota" +
+      "Response\"J\n\037MajorCompactionTimestampRequ" +
+      "est\022\'\n\ntable_name\030\001 \002(\0132\023.hbase.pb.Table" +
+      "Name\"U\n(MajorCompactionTimestampForRegio" +
+      "nRequest\022)\n\006region\030\001 \002(\0132\031.hbase.pb.Regi" +
+      "onSpecifier\"@\n MajorCompactionTimestampR" +
+      "esponse\022\034\n\024compaction_timestamp\030\001 \002(\003\"\035\n" +
+      "\033SecurityCapabilitiesRequest\"\354\001\n\034Securit" +
+      "yCapabilitiesResponse\022G\n\014capabilities\030\001 " +
+      "\003(\01621.hbase.pb.SecurityCapabilitiesRespo",
+      "nse.Capability\"\202\001\n\nCapability\022\031\n\025SIMPLE_" +
+      "AUTHENTICATION\020\000\022\031\n\025SECURE_AUTHENTICATIO" +
+      "N\020\001\022\021\n\rAUTHORIZATION\020\002\022\026\n\022CELL_AUTHORIZA" +
+      "TION\020\003\022\023\n\017CELL_VISIBILITY\020\0042\374&\n\rMasterSe" +
+      "rvice\022e\n\024GetSchemaAlterStatus\022%.hbase.pb" +
+      ".GetSchemaAlterStatusRequest\032&.hbase.pb." +
+      "GetSchemaAlterStatusResponse\022b\n\023GetTable" +
+      "Descriptors\022$.hbase.pb.GetTableDescripto" +
+      "rsRequest\032%.hbase.pb.GetTableDescriptors" +
+      "Response\022P\n\rGetTableNames\022\036.hbase.pb.Get",
+      "TableNamesRequest\032\037.hbase.pb.GetTableNam" +
+      "esResponse\022Y\n\020GetClusterStatus\022!.hbase.p" +
+      "b.GetClusterStatusRequest\032\".hbase.pb.Get" +
+      "ClusterStatusResponse\022V\n\017IsMasterRunning" +
+      "\022 .hbase.pb.IsMasterRunningRequest\032!.hba" +
+      "se.pb.IsMasterRunningResponse\022D\n\tAddColu" +
+      "mn\022\032.hbase.pb.AddColumnRequest\032\033.hbase.p" +
+      "b.AddColumnResponse\022M\n\014DeleteColumn\022\035.hb" +
+      "ase.pb.DeleteColumnRequest\032\036.hbase.pb.De" +
+      "leteColumnResponse\022M\n\014ModifyColumn\022\035.hba",
+      "se.pb.ModifyColumnRequest\032\036.hbase.pb.Mod" +
+      "ifyColumnResponse\022G\n\nMoveRegion\022\033.hbase." +
+      "pb.MoveRegionRequest\032\034.hbase.pb.MoveRegi" +
+      "onResponse\022k\n\026DispatchMergingRegions\022\'.h" +
+      "base.pb.DispatchMergingRegionsRequest\032(." +
+      "hbase.pb.DispatchMergingRegionsResponse\022" +
+      "M\n\014AssignRegion\022\035.hbase.pb.AssignRegionR" +
+      "equest\032\036.hbase.pb.AssignRegionResponse\022S" +
+      "\n\016UnassignRegion\022\037.hbase.pb.UnassignRegi" +
+      "onRequest\032 .hbase.pb.UnassignRegionRespo",
+      "nse\022P\n\rOfflineRegion\022\036.hbase.pb.OfflineR" +
+      "egionRequest\032\037.hbase.pb.OfflineRegionRes" +
+      "ponse\022J\n\013DeleteTable\022\034.hbase.pb.DeleteTa" +
+      "bleRequest\032\035.hbase.pb.DeleteTableRespons" +
+      "e\022P\n\rtruncateTable\022\036.hbase.pb.TruncateTa" +
+      "bleRequest\032\037.hbase.pb.TruncateTableRespo" +
+      "nse\022J\n\013EnableTable\022\034.hbase.pb.EnableTabl" +
+      "eRequest\032\035.hbase.pb.EnableTableResponse\022" +
+      "M\n\014DisableTable\022\035.hbase.pb.DisableTableR" +
+      "equest\032\036.hbase.pb.DisableTableResponse\022J",
+      "\n\013ModifyTable\022\034.hbase.pb.ModifyTableRequ" +
+      "est\032\035.hbase.pb.ModifyTableResponse\022J\n\013Cr" +
+      "eateTable\022\034.hbase.pb.CreateTableRequest\032" +
+      "\035.hbase.pb.CreateTableResponse\022A\n\010Shutdo" +
+      "wn\022\031.hbase.pb.ShutdownRequest\032\032.hbase.pb" +
+      ".ShutdownResponse\022G\n\nStopMaster\022\033.hbase." +
+      "pb.StopMasterRequest\032\034.hbase.pb.StopMast" +
+      "erResponse\022>\n\007Balance\022\030.hbase.pb.Balance" +
+      "Request\032\031.hbase.pb.BalanceResponse\022_\n\022Se" +
+      "tBalancerRunning\022#.hbase.pb.SetBalancerR",
+      "unningRequest\032$.hbase.pb.SetBalancerRunn" +
+      "ingResponse\022\\\n\021IsBalancerEnabled\022\".hbase" +
+      ".pb.IsBalancerEnabledRequest\032#.hbase.pb." +
+      "IsBalancerEnabledResponse\022D\n\tNormalize\022\032" +
+      ".hbase.pb.NormalizeRequest\032\033.hbase.pb.No" +
+      "rmalizeResponse\022e\n\024SetNormalizerRunning\022" +
+      "%.hbase.pb.SetNormalizerRunningRequest\032&" +
+      ".hbase.pb.SetNormalizerRunningResponse\022b" +
+      "\n\023IsNormalizerEnabled\022$.hbase.pb.IsNorma" +
+      "lizerEnabledRequest\032%.hbase.pb.IsNormali",
+      "zerEnabledResponse\022S\n\016RunCatalogScan\022\037.h" +
+      "base.pb.RunCatalogScanRequest\032 .hbase.pb" +
+      ".RunCatalogScanResponse\022e\n\024EnableCatalog" +
+      "Janitor\022%.hbase.pb.EnableCatalogJanitorR" +
+      "equest\032&.hbase.pb.EnableCatalogJanitorRe" +
+      "sponse\022n\n\027IsCatalogJanitorEnabled\022(.hbas" +
+      "e.pb.IsCatalogJanitorEnabledRequest\032).hb" +
+      "ase.pb.IsCatalogJanitorEnabledResponse\022^" +
+      "\n\021ExecMasterService\022#.hbase.pb.Coprocess" +
+      "orServiceRequest\032$.hbase.pb.CoprocessorS",
+      "erviceResponse\022A\n\010Snapshot\022\031.hbase.pb.Sn" +
+      "apshotRequest\032\032.hbase.pb.SnapshotRespons" +
+      "e\022h\n\025GetCompletedSnapshots\022&.hbase.pb.Ge" +
+      "tCompletedSnapshotsRequest\032\'.hbase.pb.Ge" +
+      "tCompletedSnapshotsResponse\022S\n\016DeleteSna" +
+      "pshot\022\037.hbase.pb.DeleteSnapshotRequest\032 " +
+      ".hbase.pb.DeleteSnapshotResponse\022S\n\016IsSn" +
+      "apshotDone\022\037.hbase.pb.IsSnapshotDoneRequ" +
+      "est\032 .hbase.pb.IsSnapshotDoneResponse\022V\n" +
+      "\017RestoreSnapshot\022 .hbase.pb.RestoreSnaps",
+      "hotRequest\032!.hbase.pb.RestoreSnapshotRes" +
+      "ponse\022h\n\025IsRestoreSnapshotDone\022&.hbase.p" +
+      "b.IsRestoreSnapshotDoneRequest\032\'.hbase.p" +
+      "b.IsRestoreSnapshotDoneResponse\022P\n\rExecP" +
+      "rocedure\022\036.hbase.pb.ExecProcedureRequest" +
+      "\032\037.hbase.pb.ExecProcedureResponse\022W\n\024Exe" +
+      "cProcedureWithRet\022\036.hbase.pb.ExecProcedu" +
+      "reRequest\032\037.hbase.pb.ExecProcedureRespon" +
+      "se\022V\n\017IsProcedureDone\022 .hbase.pb.IsProce" +
+      "dureDoneRequest\032!.hbase.pb.IsProcedureDo",
+      "neResponse\022V\n\017ModifyNamespace\022 .hbase.pb" +
+      ".ModifyNamespaceRequest\032!.hbase.pb.Modif" +
+      "yNamespaceResponse\022V\n\017CreateNamespace\022 ." +
+      "hbase.pb.CreateNamespaceRequest\032!.hbase." +
+      "pb.CreateNamespaceResponse\022V\n\017DeleteName" +
+      "space\022 .hbase.pb.DeleteNamespaceRequest\032" +
+      "!.hbase.pb.DeleteNamespaceResponse\022k\n\026Ge" +
+      "tNamespaceDescriptor\022\'.hbase.pb.GetNames" +
+      "paceDescriptorRequest\032(.hbase.pb.GetName" +
+      "spaceDescriptorResponse\022q\n\030ListNamespace",
+      "Descriptors\022).hbase.pb.ListNamespaceDesc" +
+      "riptorsRequest\032*.hbase.pb.ListNamespaceD" +
+      "escriptorsResponse\022\206\001\n\037ListTableDescript" +
+      "orsByNamespace\0220.hbase.pb.ListTableDescr" +
+      "iptorsByNamespaceRequest\0321.hbase.pb.List" +
+      "TableDescriptorsByNamespaceResponse\022t\n\031L" +
+      "istTableNamesByNamespace\022*.hbase.pb.List" +
+      "TableNamesByNamespaceRequest\032+.hbase.pb." +
+      "ListTableNamesByNamespaceResponse\022P\n\rGet" +
+      "TableState\022\036.hbase.pb.GetTableStateReque",
+      "st\032\037.hbase.pb.GetTableStateResponse\022A\n\010S" +
+      "etQuota\022\031.hbase.pb.SetQuotaRequest\032\032.hba" +
+      "se.pb.SetQuotaResponse\022x\n\037getLastMajorCo" +
+      "mpactionTimestamp\022).hbase.pb.MajorCompac" +
+      "tionTimestampRequest\032*.hbase.pb.MajorCom" +
+      "pactionTimestampResponse\022\212\001\n(getLastMajo" +
+      "rCompactionTimestampForRegion\0222.hbase.pb" +
+      ".MajorCompactionTimestampForRegionReques" +
+      "t\032*.hbase.pb.MajorCompactionTimestampRes" +
+      "ponse\022_\n\022getProcedureResult\022#.hbase.pb.G",
+      "etProcedureResultRequest\032$.hbase.pb.GetP" +
+      "rocedureResultResponse\022h\n\027getSecurityCap" +
+      "abilities\022%.hbase.pb.SecurityCapabilitie" +
+      "sRequest\032&.hbase.pb.SecurityCapabilities" +
+      "Response\022S\n\016AbortProcedure\022\037.hbase.pb.Ab" +
+      "ortProcedureRequest\032 .hbase.pb.AbortProc" +
+      "edureResponse\022S\n\016ListProcedures\022\037.hbase." +
+      "pb.ListProceduresRequest\032 .hbase.pb.List" +
+      "ProceduresResponseBB\n*org.apache.hadoop." +
+      "hbase.protobuf.generatedB\014MasterProtosH\001",
+      "\210\001\001\240\001\001"
     };
     com.google.protobuf.Descriptors.FileDescriptor.InternalDescriptorAssigner assigner =
       new com.google.protobuf.Descriptors.FileDescriptor.InternalDescriptorAssigner() {
@@ -62325,7 +62615,7 @@ public final class MasterProtos {
           internal_static_hbase_pb_CreateNamespaceResponse_fieldAccessorTable = new
             com.google.protobuf.GeneratedMessage.FieldAccessorTable(
               internal_static_hbase_pb_CreateNamespaceResponse_descriptor,
-              new java.lang.String[] { });
+              new java.lang.String[] { "ProcId", });
           internal_static_hbase_pb_DeleteNamespaceRequest_descriptor =
             getDescriptor().getMessageTypes().get(30);
           internal_static_hbase_pb_DeleteNamespaceRequest_fieldAccessorTable = new
@@ -62337,7 +62627,7 @@ public final class MasterProtos {
           internal_static_hbase_pb_DeleteNamespaceResponse_fieldAccessorTable = new
             com.google.protobuf.GeneratedMessage.FieldAccessorTable(
               internal_static_hbase_pb_DeleteNamespaceResponse_descriptor,
-              new java.lang.String[] { });
+              new java.lang.String[] { "ProcId", });
           internal_static_hbase_pb_ModifyNamespaceRequest_descriptor =
             getDescriptor().getMessageTypes().get(32);
           internal_static_hbase_pb_ModifyNamespaceRequest_fieldAccessorTable = new
@@ -62349,7 +62639,7 @@ public final class MasterProtos {
           internal_static_hbase_pb_ModifyNamespaceResponse_fieldAccessorTable = new
             com.google.protobuf.GeneratedMessage.FieldAccessorTable(
               internal_static_hbase_pb_ModifyNamespaceResponse_descriptor,
-              new java.lang.String[] { });
+              new java.lang.String[] { "ProcId", });
           internal_static_hbase_pb_GetNamespaceDescriptorRequest_descriptor =
             getDescriptor().getMessageTypes().get(34);
           internal_static_hbase_pb_GetNamespaceDescriptorRequest_fieldAccessorTable = new

http://git-wip-us.apache.org/repos/asf/hbase/blob/46303dfd/hbase-protocol/src/main/protobuf/Master.proto
----------------------------------------------------------------------
diff --git a/hbase-protocol/src/main/protobuf/Master.proto b/hbase-protocol/src/main/protobuf/Master.proto
index 4d3a2e1..aa31a5e 100644
--- a/hbase-protocol/src/main/protobuf/Master.proto
+++ b/hbase-protocol/src/main/protobuf/Master.proto
@@ -186,6 +186,7 @@ message CreateNamespaceRequest {
 }
 
 message CreateNamespaceResponse {
+  optional uint64 proc_id = 1;
 }
 
 message DeleteNamespaceRequest {
@@ -195,6 +196,7 @@ message DeleteNamespaceRequest {
 }
 
 message DeleteNamespaceResponse {
+  optional uint64 proc_id = 1;
 }
 
 message ModifyNamespaceRequest {
@@ -204,6 +206,7 @@ message ModifyNamespaceRequest {
 }
 
 message ModifyNamespaceResponse {
+  optional uint64 proc_id = 1;
 }
 
 message GetNamespaceDescriptorRequest {

http://git-wip-us.apache.org/repos/asf/hbase/blob/46303dfd/hbase-server/src/main/java/org/apache/hadoop/hbase/Server.java
----------------------------------------------------------------------
diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/Server.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/Server.java
index 365c0b8..26454f0 100644
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/Server.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/Server.java
@@ -22,6 +22,7 @@ import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.hbase.classification.InterfaceStability;
 import org.apache.hadoop.hbase.client.ClusterConnection;
+import org.apache.hadoop.hbase.client.Connection;
 import org.apache.hadoop.hbase.zookeeper.MetaTableLocator;
 import org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher;
 
@@ -43,12 +44,20 @@ public interface Server extends Abortable, Stoppable {
   ZooKeeperWatcher getZooKeeper();
 
   /**
-   * Returns a reference to the servers' cluster connection.
+   * Returns a reference to the servers' connection.
    *
    * Important note: this method returns a reference to Connection which is managed
    * by Server itself, so callers must NOT attempt to close connection obtained.
    */
-  ClusterConnection getConnection();
+  Connection getConnection();
+
+  /**
+   * Returns a reference to the servers' cluster connection. Prefer {@link #getConnection()}.
+   *
+   * Important note: this method returns a reference to Connection which is managed
+   * by Server itself, so callers must NOT attempt to close connection obtained.
+   */
+  ClusterConnection getClusterConnection();
 
   /**
    * Returns instance of {@link org.apache.hadoop.hbase.zookeeper.MetaTableLocator}

http://git-wip-us.apache.org/repos/asf/hbase/blob/46303dfd/hbase-server/src/main/java/org/apache/hadoop/hbase/master/ClusterSchema.java
----------------------------------------------------------------------
diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/master/ClusterSchema.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/master/ClusterSchema.java
new file mode 100644
index 0000000..cb3b684
--- /dev/null
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/master/ClusterSchema.java
@@ -0,0 +1,131 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.hadoop.hbase.master;
+
+import java.io.IOException;
+import java.io.InterruptedIOException;
+import java.util.List;
+
+import org.apache.hadoop.hbase.NamespaceDescriptor;
+import org.apache.hadoop.hbase.classification.InterfaceAudience;
+
+/**
+ * View and edit the current cluster schema. Use this API making any modification to
+ * namespaces, tables, etc.
+ *
+ * <h2>Implementation Notes</h2>
+ * Nonces are for when operation is non-idempotent to ensure once-only semantic, even
+ * across process failures.
+ */
+// ClusterSchema is introduced to encapsulate schema modification. Currently the different aspects
+// are spread about the code base. This effort is about cleanup, shutting down access, and
+// coalescing common code. In particular, we'd contain filesystem modification. Other
+// benefits are to make all schema modification work the same way (one way to do an operation only
+// rather than the current approach where how an operation is done varies with context) and to make
+// it so clusterschema modification can stand apart from Master to faciliate standalone
+// testing. It is part of the filesystem refactor project that undoes the dependency on a
+// layout in HDFS that mimics our model of tables have regions have column families have files.
+// With this Interface in place, with all modifications going via this route where no filesystem
+// particulars are exposed, redoing our internals will take less effort.
+//
+// Currently ClusterSchema Interface will include namespace and table manipulation. Ideally a
+// form of this Interface will go all the ways down to the file manipulation level but currently
+// TBD.
+//
+// ClusterSchema is private to the Master; only the Master knows current cluster state and has
+// means of editing/altering it.
+//
+// TODO: Remove Server argument when MasterServices are passed.
+// TODO: We return Future<ProcedureInfo> in the below from most methods. It may change to return
+// a ProcedureFuture subsequently.
+@InterfaceAudience.Private
+public interface ClusterSchema {
+  /**
+   * Timeout for cluster operations in milliseconds.
+   */
+  public static final String HBASE_MASTER_CLUSTER_SCHEMA_OPERATION_TIMEOUT_KEY =
+      "hbase.master.cluster.schema.operation.timeout";
+  /**
+   * Default operation timeout in milliseconds.
+   */
+  public static final int DEFAULT_HBASE_MASTER_CLUSTER_SCHEMA_OPERATION_TIMEOUT =
+      5 * 60 * 1000;
+
+  /**
+   * For internals use only. Do not use! Provisionally part of this Interface.
+   * Prefer the high-level APIs available elsewhere in this API.
+   * @return Instance of {@link TableNamespaceManager}
+   */
+  // TODO: Remove from here. Keep internal. This Interface is too high-level to host this accessor.
+  TableNamespaceManager getTableNamespaceManager();
+
+  /**
+   * Create a new Namespace.
+   * @param namespaceDescriptor descriptor for new Namespace
+   * @param nonceGroup Identifier for the source of the request, a client or process.
+   * @param nonce A unique identifier for this operation from the client or process identified by
+   *    <code>nonceGroup</code> (the source must ensure each operation gets a unique id).
+   * @return procedure id
+   * @throws IOException Throws {@link ClusterSchemaException} and {@link InterruptedIOException}
+   *    as well as {@link IOException}
+   */
+  long createNamespace(NamespaceDescriptor namespaceDescriptor, long nonceGroup, long nonce)
+  throws IOException;
+
+  /**
+   * Modify an existing Namespace.
+   * @param nonceGroup Identifier for the source of the request, a client or process.
+   * @param nonce A unique identifier for this operation from the client or process identified by
+   *    <code>nonceGroup</code> (the source must ensure each operation gets a unique id).
+   * @return procedure id
+   * @throws IOException Throws {@link ClusterSchemaException} and {@link InterruptedIOException}
+   *    as well as {@link IOException}
+   */
+  long modifyNamespace(NamespaceDescriptor descriptor, long nonceGroup, long nonce)
+  throws IOException;
+
+  /**
+   * Delete an existing Namespace.
+   * Only empty Namespaces (no tables) can be removed.
+   * @param nonceGroup Identifier for the source of the request, a client or process.
+   * @param nonce A unique identifier for this operation from the client or process identified by
+   *    <code>nonceGroup</code> (the source must ensure each operation gets a unique id).
+   * @return procedure id
+   * @throws IOException Throws {@link ClusterSchemaException} and {@link InterruptedIOException}
+   *    as well as {@link IOException}
+   */
+  long deleteNamespace(String name, long nonceGroup, long nonce)
+  throws IOException;
+
+  /**
+   * Get a Namespace
+   * @param name Name of the Namespace
+   * @return Namespace descriptor for <code>name</code>
+   * @throws IOException Throws {@link ClusterSchemaException} and {@link InterruptedIOException}
+   *    as well as {@link IOException}
+   */
+  // No Future here because presumption is that the request will go against cached metadata so
+  // return immediately -- no need of running a Procedure.
+  NamespaceDescriptor getNamespace(String name) throws IOException;
+
+  /**
+   * Get all Namespaces
+   * @return All Namespace descriptors
+   */
+  List<NamespaceDescriptor> getNamespaces() throws IOException;
+}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/hbase/blob/46303dfd/hbase-server/src/main/java/org/apache/hadoop/hbase/master/ClusterSchemaException.java
----------------------------------------------------------------------
diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/master/ClusterSchemaException.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/master/ClusterSchemaException.java
new file mode 100644
index 0000000..62892b6
--- /dev/null
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/master/ClusterSchemaException.java
@@ -0,0 +1,37 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.hadoop.hbase.master;
+
+import org.apache.hadoop.hbase.HBaseIOException;
+import org.apache.hadoop.hbase.classification.InterfaceAudience;
+
+@SuppressWarnings("serial")
+@InterfaceAudience.Private
+public class ClusterSchemaException extends HBaseIOException {
+  public ClusterSchemaException(String message) {
+    super(message);
+  }
+
+  public ClusterSchemaException(String message, Throwable cause) {
+    super(message, cause);
+  }
+
+  public ClusterSchemaException(Throwable cause) {
+    super(cause);
+  }
+}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/hbase/blob/46303dfd/hbase-server/src/main/java/org/apache/hadoop/hbase/master/ClusterSchemaService.java
----------------------------------------------------------------------
diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/master/ClusterSchemaService.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/master/ClusterSchemaService.java
new file mode 100644
index 0000000..43353ba
--- /dev/null
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/master/ClusterSchemaService.java
@@ -0,0 +1,27 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.hadoop.hbase.master;
+
+import org.apache.hadoop.hbase.Service;
+import org.apache.hadoop.hbase.classification.InterfaceAudience;
+
+/**
+ * Mixes in ClusterSchema and Service
+ */
+@InterfaceAudience.Private
+public interface ClusterSchemaService extends ClusterSchema, Service {}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/hbase/blob/46303dfd/hbase-server/src/main/java/org/apache/hadoop/hbase/master/ClusterSchemaServiceImpl.java
----------------------------------------------------------------------
diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/master/ClusterSchemaServiceImpl.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/master/ClusterSchemaServiceImpl.java
new file mode 100644
index 0000000..0250f36
--- /dev/null
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/master/ClusterSchemaServiceImpl.java
@@ -0,0 +1,131 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.hadoop.hbase.master;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import java.util.Set;
+
+import org.apache.hadoop.hbase.NamespaceDescriptor;
+import org.apache.hadoop.hbase.NamespaceNotFoundException;
+import org.apache.hadoop.hbase.ServiceNotRunningException;
+import org.apache.hadoop.hbase.classification.InterfaceAudience;
+import org.apache.hadoop.hbase.master.procedure.CreateNamespaceProcedure;
+import org.apache.hadoop.hbase.master.procedure.DeleteNamespaceProcedure;
+import org.apache.hadoop.hbase.master.procedure.MasterProcedureEnv;
+import org.apache.hadoop.hbase.master.procedure.ModifyNamespaceProcedure;
+import org.apache.hadoop.hbase.procedure2.Procedure;
+import org.apache.hadoop.hbase.procedure2.ProcedureExecutor;
+
+@InterfaceAudience.Private
+class ClusterSchemaServiceImpl implements ClusterSchemaService {
+  private boolean running = false;
+  private final TableNamespaceManager tableNamespaceManager;
+  private final MasterServices masterServices;
+  private final static List<NamespaceDescriptor> EMPTY_NAMESPACE_LIST =
+    Collections.unmodifiableList(new ArrayList<NamespaceDescriptor>(0));
+
+  ClusterSchemaServiceImpl(final MasterServices masterServices) {
+    this.masterServices = masterServices;
+    this.tableNamespaceManager = new TableNamespaceManager(masterServices);
+  }
+
+  // All below are synchronized so consistent view on whether running or not.
+
+  @Override
+  public synchronized boolean isRunning() {
+    return this.running;
+  }
+
+  private synchronized void checkIsRunning() throws ServiceNotRunningException {
+    if (!isRunning()) throw new ServiceNotRunningException();
+  }
+
+  @Override
+  public synchronized void startAndWait() throws IOException {
+    if (isRunning()) throw new IllegalStateException("Already running; cannot double-start.");
+    // Set to running FIRST because tableNamespaceManager start uses this class to do namespace ops
+    this.running = true;
+    this.tableNamespaceManager.start();
+  }
+
+  @Override
+  public synchronized void stopAndWait() throws IOException {
+    checkIsRunning();
+    // You can't stop tableNamespaceManager.
+    this.running = false;
+  }
+
+  @Override
+  public TableNamespaceManager getTableNamespaceManager() {
+    return this.tableNamespaceManager;
+  }
+
+  private long submitProcedure(final Procedure<?> procedure, long nonceGroup,
+      long nonce)
+  throws ServiceNotRunningException {
+    checkIsRunning();
+    ProcedureExecutor<MasterProcedureEnv> pe = this.masterServices.getMasterProcedureExecutor();
+    return pe.submitProcedure(procedure, nonceGroup, nonce);
+  }
+
+  @Override
+  public long createNamespace(NamespaceDescriptor namespaceDescriptor,
+      long nonceGroup, long nonce)
+  throws IOException {
+    return submitProcedure(new CreateNamespaceProcedure(
+      this.masterServices.getMasterProcedureExecutor().getEnvironment(), namespaceDescriptor),
+        nonceGroup, nonce);
+  }
+
+  @Override
+  public long modifyNamespace(NamespaceDescriptor namespaceDescriptor,
+      long nonceGroup, long nonce)
+  throws IOException {
+    return submitProcedure(new ModifyNamespaceProcedure(
+      this.masterServices.getMasterProcedureExecutor().getEnvironment(), namespaceDescriptor),
+        nonceGroup, nonce);
+  }
+
+  @Override
+  public long deleteNamespace(String name, long nonceGroup, long nonce)
+  throws IOException {
+    return submitProcedure(new DeleteNamespaceProcedure(
+      this.masterServices.getMasterProcedureExecutor().getEnvironment(), name),
+        nonceGroup, nonce);
+  }
+
+  @Override
+  public NamespaceDescriptor getNamespace(String name) throws IOException {
+    NamespaceDescriptor nsd = getTableNamespaceManager().get(name);
+    if (nsd == null) throw new NamespaceNotFoundException(name);
+    return nsd;
+  }
+
+  @Override
+  public List<NamespaceDescriptor> getNamespaces() throws IOException {
+    checkIsRunning();
+    Set<NamespaceDescriptor> set = getTableNamespaceManager().list();
+    if (set == null || set.isEmpty()) return EMPTY_NAMESPACE_LIST;
+    List<NamespaceDescriptor> list = new ArrayList<NamespaceDescriptor>(set.size());
+    list.addAll(set);
+    return Collections.unmodifiableList(list);
+  }
+}
\ No newline at end of file