http://git-wip-us.apache.org/repos/asf/hbase/blob/17d4b70d/hbase-endpoint/src/main/java/org/apache/hadoop/hbase/coprocessor/protobuf/generated/ColumnAggregationWithNullResponseProtos.java
----------------------------------------------------------------------
diff --git 
a/hbase-endpoint/src/main/java/org/apache/hadoop/hbase/coprocessor/protobuf/generated/ColumnAggregationWithNullResponseProtos.java
 
b/hbase-endpoint/src/main/java/org/apache/hadoop/hbase/coprocessor/protobuf/generated/ColumnAggregationWithNullResponseProtos.java
new file mode 100644
index 0000000..b25f7aa
--- /dev/null
+++ 
b/hbase-endpoint/src/main/java/org/apache/hadoop/hbase/coprocessor/protobuf/generated/ColumnAggregationWithNullResponseProtos.java
@@ -0,0 +1,1283 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: ColumnAggregationNullResponseProtocol.proto
+
+package org.apache.hadoop.hbase.coprocessor.protobuf.generated;
+
+public final class ColumnAggregationWithNullResponseProtos {
+  private ColumnAggregationWithNullResponseProtos() {}
+  public static void registerAllExtensions(
+      com.google.protobuf.ExtensionRegistry registry) {
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+  /**
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+   *
+   * <pre>
+   * use unique names for messages in ColumnAggregationXXX.protos due to a bug 
in
+   * protoc or hadoop's protoc compiler.
+   * </pre>
+   */
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extensionRegistry);
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+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
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 parseFrom(
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 parseFrom(
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 parseDelimitedFrom(
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 parseFrom(
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 parseFrom(
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bug in
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+     * </pre>
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org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.internal_static_ColumnAggregationNullResponseSumResponse_descriptor;
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org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.internal_static_ColumnAggregationNullResponseSumResponse_fieldAccessorTable
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com.google.protobuf.Parser<ColumnAggregationNullResponseSumResponse> PARSER =
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com.google.protobuf.AbstractParser<ColumnAggregationNullResponseSumResponse>() {
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org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.ColumnAggregationNullResponseSumResponse))
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 other = 
(org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.ColumnAggregationNullResponseSumResponse)
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+      boolean result = true;
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org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.ColumnAggregationNullResponseSumResponse
 parseFrom(
+        com.google.protobuf.ByteString data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
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+    public static 
org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.ColumnAggregationNullResponseSumResponse
 parseFrom(
+        com.google.protobuf.ByteString data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
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+    public static 
org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.ColumnAggregationNullResponseSumResponse
 parseFrom(byte[] data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
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+    public static 
org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.ColumnAggregationNullResponseSumResponse
 parseFrom(
+        byte[] data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
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+    public static 
org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.ColumnAggregationNullResponseSumResponse
 parseFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input);
+    }
+    public static 
org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.ColumnAggregationNullResponseSumResponse
 parseFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input, extensionRegistry);
+    }
+    public static 
org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.ColumnAggregationNullResponseSumResponse
 parseDelimitedFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return PARSER.parseDelimitedFrom(input);
+    }
+    public static 
org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.ColumnAggregationNullResponseSumResponse
 parseDelimitedFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return PARSER.parseDelimitedFrom(input, extensionRegistry);
+    }
+    public static 
org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.ColumnAggregationNullResponseSumResponse
 parseFrom(
+        com.google.protobuf.CodedInputStream input)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input);
+    }
+    public static 
org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.ColumnAggregationNullResponseSumResponse
 parseFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input, extensionRegistry);
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+
+    public static Builder newBuilder() { return Builder.create(); }
+    public Builder newBuilderForType() { return newBuilder(); }
+    public static Builder 
newBuilder(org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.ColumnAggregationNullResponseSumResponse
 prototype) {
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+    @java.lang.Override
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+      return builder;
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+    /**
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+     */
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+        com.google.protobuf.GeneratedMessage.Builder<Builder>
+       implements 
org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.ColumnAggregationNullResponseSumResponseOrBuilder
 {
+      public static final com.google.protobuf.Descriptors.Descriptor
+          getDescriptor() {
+        return 
org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.internal_static_ColumnAggregationNullResponseSumResponse_descriptor;
+      }
+
+      protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
+          internalGetFieldAccessorTable() {
+        return 
org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.internal_static_ColumnAggregationNullResponseSumResponse_fieldAccessorTable
+            .ensureFieldAccessorsInitialized(
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org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.ColumnAggregationNullResponseSumResponse.class,
 
org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.ColumnAggregationNullResponseSumResponse.Builder.class);
+      }
+
+      // Construct using 
org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.ColumnAggregationNullResponseSumResponse.newBuilder()
+      private Builder() {
+        maybeForceBuilderInitialization();
+      }
+
+      private Builder(
+          com.google.protobuf.GeneratedMessage.BuilderParent parent) {
+        super(parent);
+        maybeForceBuilderInitialization();
+      }
+      private void maybeForceBuilderInitialization() {
+        if (com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders) {
+        }
+      }
+      private static Builder create() {
+        return new Builder();
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+      public Builder clear() {
+        super.clear();
+        sum_ = 0L;
+        bitField0_ = (bitField0_ & ~0x00000001);
+        return this;
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+      public Builder clone() {
+        return create().mergeFrom(buildPartial());
+      }
+
+      public com.google.protobuf.Descriptors.Descriptor
+          getDescriptorForType() {
+        return 
org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.internal_static_ColumnAggregationNullResponseSumResponse_descriptor;
+      }
+
+      public 
org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.ColumnAggregationNullResponseSumResponse
 getDefaultInstanceForType() {
+        return 
org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.ColumnAggregationNullResponseSumResponse.getDefaultInstance();
+      }
+
+      public 
org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.ColumnAggregationNullResponseSumResponse
 build() {
+        
org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.ColumnAggregationNullResponseSumResponse
 result = buildPartial();
+        if (!result.isInitialized()) {
+          throw newUninitializedMessageException(result);
+        }
+        return result;
+      }
+
+      public 
org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.ColumnAggregationNullResponseSumResponse
 buildPartial() {
+        
org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.ColumnAggregationNullResponseSumResponse
 result = new 
org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.ColumnAggregationNullResponseSumResponse(this);
+        int from_bitField0_ = bitField0_;
+        int to_bitField0_ = 0;
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+        result.sum_ = sum_;
+        result.bitField0_ = to_bitField0_;
+        onBuilt();
+        return result;
+      }
+
+      public Builder mergeFrom(com.google.protobuf.Message other) {
+        if (other instanceof 
org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.ColumnAggregationNullResponseSumResponse)
 {
+          return 
mergeFrom((org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.ColumnAggregationNullResponseSumResponse)other);
+        } else {
+          super.mergeFrom(other);
+          return this;
+        }
+      }
+
+      public Builder 
mergeFrom(org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.ColumnAggregationNullResponseSumResponse
 other) {
+        if (other == 
org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.ColumnAggregationNullResponseSumResponse.getDefaultInstance())
 return this;
+        if (other.hasSum()) {
+          setSum(other.getSum());
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+        this.mergeUnknownFields(other.getUnknownFields());
+        return this;
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+
+      public final boolean isInitialized() {
+        return true;
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+
+      public Builder mergeFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws java.io.IOException {
+        
org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.ColumnAggregationNullResponseSumResponse
 parsedMessage = null;
+        try {
+          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+          parsedMessage = 
(org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.ColumnAggregationNullResponseSumResponse)
 e.getUnfinishedMessage();
+          throw e;
+        } finally {
+          if (parsedMessage != null) {
+            mergeFrom(parsedMessage);
+          }
+        }
+        return this;
+      }
+      private int bitField0_;
+
+      // optional int64 sum = 1;
+      private long sum_ ;
+      /**
+       * <code>optional int64 sum = 1;</code>
+       */
+      public boolean hasSum() {
+        return ((bitField0_ & 0x00000001) == 0x00000001);
+      }
+      /**
+       * <code>optional int64 sum = 1;</code>
+       */
+      public long getSum() {
+        return sum_;
+      }
+      /**
+       * <code>optional int64 sum = 1;</code>
+       */
+      public Builder setSum(long value) {
+        bitField0_ |= 0x00000001;
+        sum_ = value;
+        onChanged();
+        return this;
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+      /**
+       * <code>optional int64 sum = 1;</code>
+       */
+      public Builder clearSum() {
+        bitField0_ = (bitField0_ & ~0x00000001);
+        sum_ = 0L;
+        onChanged();
+        return this;
+      }
+
+      // 
@@protoc_insertion_point(builder_scope:ColumnAggregationNullResponseSumResponse)
+    }
+
+    static {
+      defaultInstance = new ColumnAggregationNullResponseSumResponse(true);
+      defaultInstance.initFields();
+    }
+
+    // 
@@protoc_insertion_point(class_scope:ColumnAggregationNullResponseSumResponse)
+  }
+
+  /**
+   * Protobuf service {@code ColumnAggregationServiceNullResponse}
+   */
+  public static abstract class ColumnAggregationServiceNullResponse
+      implements com.google.protobuf.Service {
+    protected ColumnAggregationServiceNullResponse() {}
+
+    public interface Interface {
+      /**
+       * <code>rpc sum(.ColumnAggregationNullResponseSumRequest) returns 
(.ColumnAggregationNullResponseSumResponse);</code>
+       */
+      public abstract void sum(
+          com.google.protobuf.RpcController controller,
+          
org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.ColumnAggregationNullResponseSumRequest
 request,
+          
com.google.protobuf.RpcCallback<org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.ColumnAggregationNullResponseSumResponse>
 done);
+
+    }
+
+    public static com.google.protobuf.Service newReflectiveService(
+        final Interface impl) {
+      return new ColumnAggregationServiceNullResponse() {
+        @java.lang.Override
+        public  void sum(
+            com.google.protobuf.RpcController controller,
+            
org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.ColumnAggregationNullResponseSumRequest
 request,
+            
com.google.protobuf.RpcCallback<org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.ColumnAggregationNullResponseSumResponse>
 done) {
+          impl.sum(controller, request, done);
+        }
+
+      };
+    }
+
+    public static com.google.protobuf.BlockingService
+        newReflectiveBlockingService(final BlockingInterface impl) {
+      return new com.google.protobuf.BlockingService() {
+        public final com.google.protobuf.Descriptors.ServiceDescriptor
+            getDescriptorForType() {
+          return getDescriptor();
+        }
+
+        public final com.google.protobuf.Message callBlockingMethod(
+            com.google.protobuf.Descriptors.MethodDescriptor method,
+            com.google.protobuf.RpcController controller,
+            com.google.protobuf.Message request)
+            throws com.google.protobuf.ServiceException {
+          if (method.getService() != getDescriptor()) {
+            throw new java.lang.IllegalArgumentException(
+              "Service.callBlockingMethod() given method descriptor for " +
+              "wrong service type.");
+          }
+          switch(method.getIndex()) {
+            case 0:
+              return impl.sum(controller, 
(org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.ColumnAggregationNullResponseSumRequest)request);
+            default:
+              throw new java.lang.AssertionError("Can't get here.");
+          }
+        }
+
+        public final com.google.protobuf.Message
+            getRequestPrototype(
+            com.google.protobuf.Descriptors.MethodDescriptor method) {
+          if (method.getService() != getDescriptor()) {
+            throw new java.lang.IllegalArgumentException(
+              "Service.getRequestPrototype() given method " +
+              "descriptor for wrong service type.");
+          }
+          switch(method.getIndex()) {
+            case 0:
+              return 
org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.ColumnAggregationNullResponseSumRequest.getDefaultInstance();
+            default:
+              throw new java.lang.AssertionError("Can't get here.");
+          }
+        }
+
+        public final com.google.protobuf.Message
+            getResponsePrototype(
+            com.google.protobuf.Descriptors.MethodDescriptor method) {
+          if (method.getService() != getDescriptor()) {
+            throw new java.lang.IllegalArgumentException(
+              "Service.getResponsePrototype() given method " +
+              "descriptor for wrong service type.");
+          }
+          switch(method.getIndex()) {
+            case 0:
+              return 
org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.ColumnAggregationNullResponseSumResponse.getDefaultInstance();
+            default:
+              throw new java.lang.AssertionError("Can't get here.");
+          }
+        }
+
+      };
+    }
+
+    /**
+     * <code>rpc sum(.ColumnAggregationNullResponseSumRequest) returns 
(.ColumnAggregationNullResponseSumResponse);</code>
+     */
+    public abstract void sum(
+        com.google.protobuf.RpcController controller,
+        
org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.ColumnAggregationNullResponseSumRequest
 request,
+        
com.google.protobuf.RpcCallback<org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.ColumnAggregationNullResponseSumResponse>
 done);
+
+    public static final
+        com.google.protobuf.Descriptors.ServiceDescriptor
+        getDescriptor() {
+      return 
org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.getDescriptor().getServices().get(0);
+    }
+    public final com.google.protobuf.Descriptors.ServiceDescriptor
+        getDescriptorForType() {
+      return getDescriptor();
+    }
+
+    public final void callMethod(
+        com.google.protobuf.Descriptors.MethodDescriptor method,
+        com.google.protobuf.RpcController controller,
+        com.google.protobuf.Message request,
+        com.google.protobuf.RpcCallback<
+          com.google.protobuf.Message> done) {
+      if (method.getService() != getDescriptor()) {
+        throw new java.lang.IllegalArgumentException(
+          "Service.callMethod() given method descriptor for wrong " +
+          "service type.");
+      }
+      switch(method.getIndex()) {
+        case 0:
+          this.sum(controller, 
(org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.ColumnAggregationNullResponseSumRequest)request,
+            
com.google.protobuf.RpcUtil.<org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.ColumnAggregationNullResponseSumResponse>specializeCallback(
+              done));
+          return;
+        default:
+          throw new java.lang.AssertionError("Can't get here.");
+      }
+    }
+
+    public final com.google.protobuf.Message
+        getRequestPrototype(
+        com.google.protobuf.Descriptors.MethodDescriptor method) {
+      if (method.getService() != getDescriptor()) {
+        throw new java.lang.IllegalArgumentException(
+          "Service.getRequestPrototype() given method " +
+          "descriptor for wrong service type.");
+      }
+      switch(method.getIndex()) {
+        case 0:
+          return 
org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.ColumnAggregationNullResponseSumRequest.getDefaultInstance();
+        default:
+          throw new java.lang.AssertionError("Can't get here.");
+      }
+    }
+
+    public final com.google.protobuf.Message
+        getResponsePrototype(
+        com.google.protobuf.Descriptors.MethodDescriptor method) {
+      if (method.getService() != getDescriptor()) {
+        throw new java.lang.IllegalArgumentException(
+          "Service.getResponsePrototype() given method " +
+          "descriptor for wrong service type.");
+      }
+      switch(method.getIndex()) {
+        case 0:
+          return 
org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.ColumnAggregationNullResponseSumResponse.getDefaultInstance();
+        default:
+          throw new java.lang.AssertionError("Can't get here.");
+      }
+    }
+
+    public static Stub newStub(
+        com.google.protobuf.RpcChannel channel) {
+      return new Stub(channel);
+    }
+
+    public static final class Stub extends 
org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.ColumnAggregationServiceNullResponse
 implements Interface {
+      private Stub(com.google.protobuf.RpcChannel channel) {
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+      }
+
+      private final com.google.protobuf.RpcChannel channel;
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+      public com.google.protobuf.RpcChannel getChannel() {
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+      }
+
+      public  void sum(
+          com.google.protobuf.RpcController controller,
+          
org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.ColumnAggregationNullResponseSumRequest
 request,
+          
com.google.protobuf.RpcCallback<org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.ColumnAggregationNullResponseSumResponse>
 done) {
+        channel.callMethod(
+          getDescriptor().getMethods().get(0),
+          controller,
+          request,
+          
org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.ColumnAggregationNullResponseSumResponse.getDefaultInstance(),
+          com.google.protobuf.RpcUtil.generalizeCallback(
+            done,
+            
org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.ColumnAggregationNullResponseSumResponse.class,
+            
org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.ColumnAggregationNullResponseSumResponse.getDefaultInstance()));
+      }
+    }
+
+    public static BlockingInterface newBlockingStub(
+        com.google.protobuf.BlockingRpcChannel channel) {
+      return new BlockingStub(channel);
+    }
+
+    public interface BlockingInterface {
+      public 
org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.ColumnAggregationNullResponseSumResponse
 sum(
+          com.google.protobuf.RpcController controller,
+          
org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.ColumnAggregationNullResponseSumRequest
 request)
+          throws com.google.protobuf.ServiceException;
+    }
+
+    private static final class BlockingStub implements BlockingInterface {
+      private BlockingStub(com.google.protobuf.BlockingRpcChannel channel) {
+        this.channel = channel;
+      }
+
+      private final com.google.protobuf.BlockingRpcChannel channel;
+
+      public 
org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.ColumnAggregationNullResponseSumResponse
 sum(
+          com.google.protobuf.RpcController controller,
+          
org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.ColumnAggregationNullResponseSumRequest
 request)
+          throws com.google.protobuf.ServiceException {
+        return 
(org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.ColumnAggregationNullResponseSumResponse)
 channel.callBlockingMethod(
+          getDescriptor().getMethods().get(0),
+          controller,
+          request,
+          
org.apache.hadoop.hbase.coprocessor.protobuf.generated.ColumnAggregationWithNullResponseProtos.ColumnAggregationNullResponseSumResponse.getDefaultInstance());
+      }
+
+    }
+
+    // 
@@protoc_insertion_point(class_scope:ColumnAggregationServiceNullResponse)
+  }
+
+  private static com.google.protobuf.Descriptors.Descriptor
+    internal_static_ColumnAggregationNullResponseSumRequest_descriptor;
+  private static
+    com.google.protobuf.GeneratedMessage.FieldAccessorTable
+      
internal_static_ColumnAggregationNullResponseSumRequest_fieldAccessorTable;
+  private static com.google.protobuf.Descriptors.Descriptor
+    internal_static_ColumnAggregationNullResponseSumResponse_descriptor;
+  private static
+    com.google.protobuf.GeneratedMessage.FieldAccessorTable
+      
internal_static_ColumnAggregationNullResponseSumResponse_fieldAccessorTable;
+
+  public static com.google.protobuf.Descriptors.FileDescriptor
+      getDescriptor() {
+    return descriptor;
+  }
+  private static com.google.protobuf.Descriptors.FileDescriptor
+      descriptor;
+  static {
+    java.lang.String[] descriptorData = {
+      "\n+ColumnAggregationNullResponseProtocol." +
+      "proto\"L\n\'ColumnAggregationNullResponseSu" +
+      "mRequest\022\016\n\006family\030\001 
\002(\014\022\021\n\tqualifier\030\002 " +
+      "\001(\014\"7\n(ColumnAggregationNullResponseSumR" +
+      "esponse\022\013\n\003sum\030\001 \001(\0032\202\001\n$ColumnAggregati" +
+      "onServiceNullResponse\022Z\n\003sum\022(.ColumnAgg" +
+      "regationNullResponseSumRequest\032).ColumnA" +
+      "ggregationNullResponseSumResponseBg\n6org" +
+      ".apache.hadoop.hbase.coprocessor.protobu" +
+      "f.generatedB\'ColumnAggregationWithNullRe",
+      "sponseProtos\210\001\001\240\001\001"
+    };
+    com.google.protobuf.Descriptors.FileDescriptor.InternalDescriptorAssigner 
assigner =
+      new 
com.google.protobuf.Descriptors.FileDescriptor.InternalDescriptorAssigner() {
+        public com.google.protobuf.ExtensionRegistry assignDescriptors(
+            com.google.protobuf.Descriptors.FileDescriptor root) {
+          descriptor = root;
+          internal_static_ColumnAggregationNullResponseSumRequest_descriptor =
+            getDescriptor().getMessageTypes().get(0);
+          
internal_static_ColumnAggregationNullResponseSumRequest_fieldAccessorTable = new
+            com.google.protobuf.GeneratedMessage.FieldAccessorTable(
+              
internal_static_ColumnAggregationNullResponseSumRequest_descriptor,
+              new java.lang.String[] { "Family", "Qualifier", });
+          internal_static_ColumnAggregationNullResponseSumResponse_descriptor =
+            getDescriptor().getMessageTypes().get(1);
+          
internal_static_ColumnAggregationNullResponseSumResponse_fieldAccessorTable = 
new
+            com.google.protobuf.GeneratedMessage.FieldAccessorTable(
+              
internal_static_ColumnAggregationNullResponseSumResponse_descriptor,
+              new java.lang.String[] { "Sum", });
+          return null;
+        }
+      };
+    com.google.protobuf.Descriptors.FileDescriptor
+      .internalBuildGeneratedFileFrom(descriptorData,
+        new com.google.protobuf.Descriptors.FileDescriptor[] {
+        }, assigner);
+  }
+
+  // @@protoc_insertion_point(outer_class_scope)
+}

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