[06/12] DRILL-233: Move protobuf IDLs to a separate module and check in the compile Java sources

[ja...@apache.org]

http://git-wip-us.apache.org/repos/asf/incubator-drill/blob/07c6c21d/protocol/src/main/java/org/apache/drill/exec/proto/GeneralRPCProtos.java
----------------------------------------------------------------------
diff --git a/protocol/src/main/java/org/apache/drill/exec/proto/GeneralRPCProtos.java b/protocol/src/main/java/org/apache/drill/exec/proto/GeneralRPCProtos.java
new file mode 100644
index 0000000..5e37123
--- /dev/null
+++ b/protocol/src/main/java/org/apache/drill/exec/proto/GeneralRPCProtos.java
@@ -0,0 +1,2888 @@
+/**
+ * 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.
+ */
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: GeneralRPC.proto
+
+package org.apache.drill.exec.proto;
+
+public final class GeneralRPCProtos {
+  private GeneralRPCProtos() {}
+  public static void registerAllExtensions(
+      com.google.protobuf.ExtensionRegistry registry) {
+  }
+  /**
+   * Protobuf enum {@code exec.rpc.RpcMode}
+   */
+  public enum RpcMode
+      implements com.google.protobuf.ProtocolMessageEnum {
+    /**
+     * <code>REQUEST = 0;</code>
+     */
+    REQUEST(0, 0),
+    /**
+     * <code>RESPONSE = 1;</code>
+     */
+    RESPONSE(1, 1),
+    /**
+     * <code>RESPONSE_FAILURE = 2;</code>
+     */
+    RESPONSE_FAILURE(2, 2),
+    ;
+
+    /**
+     * <code>REQUEST = 0;</code>
+     */
+    public static final int REQUEST_VALUE = 0;
+    /**
+     * <code>RESPONSE = 1;</code>
+     */
+    public static final int RESPONSE_VALUE = 1;
+    /**
+     * <code>RESPONSE_FAILURE = 2;</code>
+     */
+    public static final int RESPONSE_FAILURE_VALUE = 2;
+
+
+    public final int getNumber() { return value; }
+
+    public static RpcMode valueOf(int value) {
+      switch (value) {
+        case 0: return REQUEST;
+        case 1: return RESPONSE;
+        case 2: return RESPONSE_FAILURE;
+        default: return null;
+      }
+    }
+
+    public static com.google.protobuf.Internal.EnumLiteMap<RpcMode>
+        internalGetValueMap() {
+      return internalValueMap;
+    }
+    private static com.google.protobuf.Internal.EnumLiteMap<RpcMode>
+        internalValueMap =
+          new com.google.protobuf.Internal.EnumLiteMap<RpcMode>() {
+            public RpcMode findValueByNumber(int number) {
+              return RpcMode.valueOf(number);
+            }
+          };
+
+    public final com.google.protobuf.Descriptors.EnumValueDescriptor
+        getValueDescriptor() {
+      return getDescriptor().getValues().get(index);
+    }
+    public final com.google.protobuf.Descriptors.EnumDescriptor
+        getDescriptorForType() {
+      return getDescriptor();
+    }
+    public static final com.google.protobuf.Descriptors.EnumDescriptor
+        getDescriptor() {
+      return org.apache.drill.exec.proto.GeneralRPCProtos.getDescriptor().getEnumTypes().get(0);
+    }
+
+    private static final RpcMode[] VALUES = values();
+
+    public static RpcMode valueOf(
+        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 index;
+    private final int value;
+
+    private RpcMode(int index, int value) {
+      this.index = index;
+      this.value = value;
+    }
+
+    // @@protoc_insertion_point(enum_scope:exec.rpc.RpcMode)
+  }
+
+  public interface AckOrBuilder
+      extends com.google.protobuf.MessageOrBuilder {
+
+    // optional bool ok = 1;
+    /**
+     * <code>optional bool ok = 1;</code>
+     */
+    boolean hasOk();
+    /**
+     * <code>optional bool ok = 1;</code>
+     */
+    boolean getOk();
+  }
+  /**
+   * Protobuf type {@code exec.rpc.Ack}
+   */
+  public static final class Ack extends
+      com.google.protobuf.GeneratedMessage
+      implements AckOrBuilder {
+    // Use Ack.newBuilder() to construct.
+    private Ack(com.google.protobuf.GeneratedMessage.Builder<?> builder) {
+      super(builder);
+      this.unknownFields = builder.getUnknownFields();
+    }
+    private Ack(boolean noInit) { this.unknownFields = com.google.protobuf.UnknownFieldSet.getDefaultInstance(); }
+
+    private static final Ack defaultInstance;
+    public static Ack getDefaultInstance() {
+      return defaultInstance;
+    }
+
+    public Ack getDefaultInstanceForType() {
+      return defaultInstance;
+    }
+
+    private final com.google.protobuf.UnknownFieldSet unknownFields;
+    @java.lang.Override
+    public final com.google.protobuf.UnknownFieldSet
+        getUnknownFields() {
+      return this.unknownFields;
+    }
+    private Ack(
+        com.google.protobuf.CodedInputStream input,
+        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 {
+        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 8: {
+              bitField0_ |= 0x00000001;
+              ok_ = input.readBool();
+              break;
+            }
+          }
+        }
+      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+        throw e.setUnfinishedMessage(this);
+      } catch (java.io.IOException e) {
+        throw new com.google.protobuf.InvalidProtocolBufferException(
+            e.getMessage()).setUnfinishedMessage(this);
+      } finally {
+        this.unknownFields = unknownFields.build();
+        makeExtensionsImmutable();
+      }
+    }
+    public static final com.google.protobuf.Descriptors.Descriptor
+        getDescriptor() {
+      return org.apache.drill.exec.proto.GeneralRPCProtos.internal_static_exec_rpc_Ack_descriptor;
+    }
+
+    protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
+        internalGetFieldAccessorTable() {
+      return org.apache.drill.exec.proto.GeneralRPCProtos.internal_static_exec_rpc_Ack_fieldAccessorTable
+          .ensureFieldAccessorsInitialized(
+              org.apache.drill.exec.proto.GeneralRPCProtos.Ack.class, org.apache.drill.exec.proto.GeneralRPCProtos.Ack.Builder.class);
+    }
+
+    public static com.google.protobuf.Parser<Ack> PARSER =
+        new com.google.protobuf.AbstractParser<Ack>() {
+      public Ack parsePartialFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws com.google.protobuf.InvalidProtocolBufferException {
+        return new Ack(input, extensionRegistry);
+      }
+    };
+
+    @java.lang.Override
+    public com.google.protobuf.Parser<Ack> getParserForType() {
+      return PARSER;
+    }
+
+    private int bitField0_;
+    // optional bool ok = 1;
+    public static final int OK_FIELD_NUMBER = 1;
+    private boolean ok_;
+    /**
+     * <code>optional bool ok = 1;</code>
+     */
+    public boolean hasOk() {
+      return ((bitField0_ & 0x00000001) == 0x00000001);
+    }
+    /**
+     * <code>optional bool ok = 1;</code>
+     */
+    public boolean getOk() {
+      return ok_;
+    }
+
+    private void initFields() {
+      ok_ = false;
+    }
+    private byte memoizedIsInitialized = -1;
+    public final boolean isInitialized() {
+      byte isInitialized = memoizedIsInitialized;
+      if (isInitialized != -1) return isInitialized == 1;
+
+      memoizedIsInitialized = 1;
+      return true;
+    }
+
+    public void writeTo(com.google.protobuf.CodedOutputStream output)
+                        throws java.io.IOException {
+      getSerializedSize();
+      if (((bitField0_ & 0x00000001) == 0x00000001)) {
+        output.writeBool(1, ok_);
+      }
+      getUnknownFields().writeTo(output);
+    }
+
+    private int memoizedSerializedSize = -1;
+    public int getSerializedSize() {
+      int size = memoizedSerializedSize;
+      if (size != -1) return size;
+
+      size = 0;
+      if (((bitField0_ & 0x00000001) == 0x00000001)) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeBoolSize(1, ok_);
+      }
+      size += getUnknownFields().getSerializedSize();
+      memoizedSerializedSize = size;
+      return size;
+    }
+
+    private static final long serialVersionUID = 0L;
+    @java.lang.Override
+    protected java.lang.Object writeReplace()
+        throws java.io.ObjectStreamException {
+      return super.writeReplace();
+    }
+
+    public static org.apache.drill.exec.proto.GeneralRPCProtos.Ack parseFrom(
+        com.google.protobuf.ByteString data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static org.apache.drill.exec.proto.GeneralRPCProtos.Ack parseFrom(
+        com.google.protobuf.ByteString data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static org.apache.drill.exec.proto.GeneralRPCProtos.Ack parseFrom(byte[] data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static org.apache.drill.exec.proto.GeneralRPCProtos.Ack parseFrom(
+        byte[] data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static org.apache.drill.exec.proto.GeneralRPCProtos.Ack parseFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input);
+    }
+    public static org.apache.drill.exec.proto.GeneralRPCProtos.Ack parseFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input, extensionRegistry);
+    }
+    public static org.apache.drill.exec.proto.GeneralRPCProtos.Ack parseDelimitedFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return PARSER.parseDelimitedFrom(input);
+    }
+    public static org.apache.drill.exec.proto.GeneralRPCProtos.Ack parseDelimitedFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return PARSER.parseDelimitedFrom(input, extensionRegistry);
+    }
+    public static org.apache.drill.exec.proto.GeneralRPCProtos.Ack parseFrom(
+        com.google.protobuf.CodedInputStream input)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input);
+    }
+    public static org.apache.drill.exec.proto.GeneralRPCProtos.Ack parseFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input, extensionRegistry);
+    }
+
+    public static Builder newBuilder() { return Builder.create(); }
+    public Builder newBuilderForType() { return newBuilder(); }
+    public static Builder newBuilder(org.apache.drill.exec.proto.GeneralRPCProtos.Ack prototype) {
+      return newBuilder().mergeFrom(prototype);
+    }
+    public Builder toBuilder() { return newBuilder(this); }
+
+    @java.lang.Override
+    protected Builder newBuilderForType(
+        com.google.protobuf.GeneratedMessage.BuilderParent parent) {
+      Builder builder = new Builder(parent);
+      return builder;
+    }
+    /**
+     * Protobuf type {@code exec.rpc.Ack}
+     */
+    public static final class Builder extends
+        com.google.protobuf.GeneratedMessage.Builder<Builder>
+       implements org.apache.drill.exec.proto.GeneralRPCProtos.AckOrBuilder {
+      public static final com.google.protobuf.Descriptors.Descriptor
+          getDescriptor() {
+        return org.apache.drill.exec.proto.GeneralRPCProtos.internal_static_exec_rpc_Ack_descriptor;
+      }
+
+      protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
+          internalGetFieldAccessorTable() {
+        return org.apache.drill.exec.proto.GeneralRPCProtos.internal_static_exec_rpc_Ack_fieldAccessorTable
+            .ensureFieldAccessorsInitialized(
+                org.apache.drill.exec.proto.GeneralRPCProtos.Ack.class, org.apache.drill.exec.proto.GeneralRPCProtos.Ack.Builder.class);
+      }
+
+      // Construct using org.apache.drill.exec.proto.GeneralRPCProtos.Ack.newBuilder()
+      private Builder() {
+        maybeForceBuilderInitialization();
+      }
+
+      private Builder(
+          com.google.protobuf.GeneratedMessage.BuilderParent parent) {
+        super(parent);
+        maybeForceBuilderInitialization();
+      }
+      private void maybeForceBuilderInitialization() {
+        if (com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders) {
+        }
+      }
+      private static Builder create() {
+        return new Builder();
+      }
+
+      public Builder clear() {
+        super.clear();
+        ok_ = false;
+        bitField0_ = (bitField0_ & ~0x00000001);
+        return this;
+      }
+
+      public Builder clone() {
+        return create().mergeFrom(buildPartial());
+      }
+
+      public com.google.protobuf.Descriptors.Descriptor
+          getDescriptorForType() {
+        return org.apache.drill.exec.proto.GeneralRPCProtos.internal_static_exec_rpc_Ack_descriptor;
+      }
+
+      public org.apache.drill.exec.proto.GeneralRPCProtos.Ack getDefaultInstanceForType() {
+        return org.apache.drill.exec.proto.GeneralRPCProtos.Ack.getDefaultInstance();
+      }
+
+      public org.apache.drill.exec.proto.GeneralRPCProtos.Ack build() {
+        org.apache.drill.exec.proto.GeneralRPCProtos.Ack result = buildPartial();
+        if (!result.isInitialized()) {
+          throw newUninitializedMessageException(result);
+        }
+        return result;
+      }
+
+      public org.apache.drill.exec.proto.GeneralRPCProtos.Ack buildPartial() {
+        org.apache.drill.exec.proto.GeneralRPCProtos.Ack result = new org.apache.drill.exec.proto.GeneralRPCProtos.Ack(this);
+        int from_bitField0_ = bitField0_;
+        int to_bitField0_ = 0;
+        if (((from_bitField0_ & 0x00000001) == 0x00000001)) {
+          to_bitField0_ |= 0x00000001;
+        }
+        result.ok_ = ok_;
+        result.bitField0_ = to_bitField0_;
+        onBuilt();
+        return result;
+      }
+
+      public Builder mergeFrom(com.google.protobuf.Message other) {
+        if (other instanceof org.apache.drill.exec.proto.GeneralRPCProtos.Ack) {
+          return mergeFrom((org.apache.drill.exec.proto.GeneralRPCProtos.Ack)other);
+        } else {
+          super.mergeFrom(other);
+          return this;
+        }
+      }
+
+      public Builder mergeFrom(org.apache.drill.exec.proto.GeneralRPCProtos.Ack other) {
+        if (other == org.apache.drill.exec.proto.GeneralRPCProtos.Ack.getDefaultInstance()) return this;
+        if (other.hasOk()) {
+          setOk(other.getOk());
+        }
+        this.mergeUnknownFields(other.getUnknownFields());
+        return this;
+      }
+
+      public final boolean isInitialized() {
+        return true;
+      }
+
+      public Builder mergeFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws java.io.IOException {
+        org.apache.drill.exec.proto.GeneralRPCProtos.Ack parsedMessage = null;
+        try {
+          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+          parsedMessage = (org.apache.drill.exec.proto.GeneralRPCProtos.Ack) e.getUnfinishedMessage();
+          throw e;
+        } finally {
+          if (parsedMessage != null) {
+            mergeFrom(parsedMessage);
+          }
+        }
+        return this;
+      }
+      private int bitField0_;
+
+      // optional bool ok = 1;
+      private boolean ok_ ;
+      /**
+       * <code>optional bool ok = 1;</code>
+       */
+      public boolean hasOk() {
+        return ((bitField0_ & 0x00000001) == 0x00000001);
+      }
+      /**
+       * <code>optional bool ok = 1;</code>
+       */
+      public boolean getOk() {
+        return ok_;
+      }
+      /**
+       * <code>optional bool ok = 1;</code>
+       */
+      public Builder setOk(boolean value) {
+        bitField0_ |= 0x00000001;
+        ok_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>optional bool ok = 1;</code>
+       */
+      public Builder clearOk() {
+        bitField0_ = (bitField0_ & ~0x00000001);
+        ok_ = false;
+        onChanged();
+        return this;
+      }
+
+      // @@protoc_insertion_point(builder_scope:exec.rpc.Ack)
+    }
+
+    static {
+      defaultInstance = new Ack(true);
+      defaultInstance.initFields();
+    }
+
+    // @@protoc_insertion_point(class_scope:exec.rpc.Ack)
+  }
+
+  public interface RpcHeaderOrBuilder
+      extends com.google.protobuf.MessageOrBuilder {
+
+    // optional .exec.rpc.RpcMode mode = 1;
+    /**
+     * <code>optional .exec.rpc.RpcMode mode = 1;</code>
+     */
+    boolean hasMode();
+    /**
+     * <code>optional .exec.rpc.RpcMode mode = 1;</code>
+     */
+    org.apache.drill.exec.proto.GeneralRPCProtos.RpcMode getMode();
+
+    // optional int32 coordination_id = 2;
+    /**
+     * <code>optional int32 coordination_id = 2;</code>
+     *
+     * <pre>
+     * reusable coordination identifier.  Sender defines.  Server returns on return.  Irrelevant for purely single direction rpc.
+     * </pre>
+     */
+    boolean hasCoordinationId();
+    /**
+     * <code>optional int32 coordination_id = 2;</code>
+     *
+     * <pre>
+     * reusable coordination identifier.  Sender defines.  Server returns on return.  Irrelevant for purely single direction rpc.
+     * </pre>
+     */
+    int getCoordinationId();
+
+    // optional int32 rpc_type = 3;
+    /**
+     * <code>optional int32 rpc_type = 3;</code>
+     *
+     * <pre>
+     * a rpc mode specific rpc type.
+     * </pre>
+     */
+    boolean hasRpcType();
+    /**
+     * <code>optional int32 rpc_type = 3;</code>
+     *
+     * <pre>
+     * a rpc mode specific rpc type.
+     * </pre>
+     */
+    int getRpcType();
+  }
+  /**
+   * Protobuf type {@code exec.rpc.RpcHeader}
+   */
+  public static final class RpcHeader extends
+      com.google.protobuf.GeneratedMessage
+      implements RpcHeaderOrBuilder {
+    // Use RpcHeader.newBuilder() to construct.
+    private RpcHeader(com.google.protobuf.GeneratedMessage.Builder<?> builder) {
+      super(builder);
+      this.unknownFields = builder.getUnknownFields();
+    }
+    private RpcHeader(boolean noInit) { this.unknownFields = com.google.protobuf.UnknownFieldSet.getDefaultInstance(); }
+
+    private static final RpcHeader defaultInstance;
+    public static RpcHeader getDefaultInstance() {
+      return defaultInstance;
+    }
+
+    public RpcHeader getDefaultInstanceForType() {
+      return defaultInstance;
+    }
+
+    private final com.google.protobuf.UnknownFieldSet unknownFields;
+    @java.lang.Override
+    public final com.google.protobuf.UnknownFieldSet
+        getUnknownFields() {
+      return this.unknownFields;
+    }
+    private RpcHeader(
+        com.google.protobuf.CodedInputStream input,
+        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 {
+        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 8: {
+              int rawValue = input.readEnum();
+              org.apache.drill.exec.proto.GeneralRPCProtos.RpcMode value = org.apache.drill.exec.proto.GeneralRPCProtos.RpcMode.valueOf(rawValue);
+              if (value == null) {
+                unknownFields.mergeVarintField(1, rawValue);
+              } else {
+                bitField0_ |= 0x00000001;
+                mode_ = value;
+              }
+              break;
+            }
+            case 16: {
+              bitField0_ |= 0x00000002;
+              coordinationId_ = input.readInt32();
+              break;
+            }
+            case 24: {
+              bitField0_ |= 0x00000004;
+              rpcType_ = input.readInt32();
+              break;
+            }
+          }
+        }
+      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+        throw e.setUnfinishedMessage(this);
+      } catch (java.io.IOException e) {
+        throw new com.google.protobuf.InvalidProtocolBufferException(
+            e.getMessage()).setUnfinishedMessage(this);
+      } finally {
+        this.unknownFields = unknownFields.build();
+        makeExtensionsImmutable();
+      }
+    }
+    public static final com.google.protobuf.Descriptors.Descriptor
+        getDescriptor() {
+      return org.apache.drill.exec.proto.GeneralRPCProtos.internal_static_exec_rpc_RpcHeader_descriptor;
+    }
+
+    protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
+        internalGetFieldAccessorTable() {
+      return org.apache.drill.exec.proto.GeneralRPCProtos.internal_static_exec_rpc_RpcHeader_fieldAccessorTable
+          .ensureFieldAccessorsInitialized(
+              org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeader.class, org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeader.Builder.class);
+    }
+
+    public static com.google.protobuf.Parser<RpcHeader> PARSER =
+        new com.google.protobuf.AbstractParser<RpcHeader>() {
+      public RpcHeader parsePartialFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws com.google.protobuf.InvalidProtocolBufferException {
+        return new RpcHeader(input, extensionRegistry);
+      }
+    };
+
+    @java.lang.Override
+    public com.google.protobuf.Parser<RpcHeader> getParserForType() {
+      return PARSER;
+    }
+
+    private int bitField0_;
+    // optional .exec.rpc.RpcMode mode = 1;
+    public static final int MODE_FIELD_NUMBER = 1;
+    private org.apache.drill.exec.proto.GeneralRPCProtos.RpcMode mode_;
+    /**
+     * <code>optional .exec.rpc.RpcMode mode = 1;</code>
+     */
+    public boolean hasMode() {
+      return ((bitField0_ & 0x00000001) == 0x00000001);
+    }
+    /**
+     * <code>optional .exec.rpc.RpcMode mode = 1;</code>
+     */
+    public org.apache.drill.exec.proto.GeneralRPCProtos.RpcMode getMode() {
+      return mode_;
+    }
+
+    // optional int32 coordination_id = 2;
+    public static final int COORDINATION_ID_FIELD_NUMBER = 2;
+    private int coordinationId_;
+    /**
+     * <code>optional int32 coordination_id = 2;</code>
+     *
+     * <pre>
+     * reusable coordination identifier.  Sender defines.  Server returns on return.  Irrelevant for purely single direction rpc.
+     * </pre>
+     */
+    public boolean hasCoordinationId() {
+      return ((bitField0_ & 0x00000002) == 0x00000002);
+    }
+    /**
+     * <code>optional int32 coordination_id = 2;</code>
+     *
+     * <pre>
+     * reusable coordination identifier.  Sender defines.  Server returns on return.  Irrelevant for purely single direction rpc.
+     * </pre>
+     */
+    public int getCoordinationId() {
+      return coordinationId_;
+    }
+
+    // optional int32 rpc_type = 3;
+    public static final int RPC_TYPE_FIELD_NUMBER = 3;
+    private int rpcType_;
+    /**
+     * <code>optional int32 rpc_type = 3;</code>
+     *
+     * <pre>
+     * a rpc mode specific rpc type.
+     * </pre>
+     */
+    public boolean hasRpcType() {
+      return ((bitField0_ & 0x00000004) == 0x00000004);
+    }
+    /**
+     * <code>optional int32 rpc_type = 3;</code>
+     *
+     * <pre>
+     * a rpc mode specific rpc type.
+     * </pre>
+     */
+    public int getRpcType() {
+      return rpcType_;
+    }
+
+    private void initFields() {
+      mode_ = org.apache.drill.exec.proto.GeneralRPCProtos.RpcMode.REQUEST;
+      coordinationId_ = 0;
+      rpcType_ = 0;
+    }
+    private byte memoizedIsInitialized = -1;
+    public final boolean isInitialized() {
+      byte isInitialized = memoizedIsInitialized;
+      if (isInitialized != -1) return isInitialized == 1;
+
+      memoizedIsInitialized = 1;
+      return true;
+    }
+
+    public void writeTo(com.google.protobuf.CodedOutputStream output)
+                        throws java.io.IOException {
+      getSerializedSize();
+      if (((bitField0_ & 0x00000001) == 0x00000001)) {
+        output.writeEnum(1, mode_.getNumber());
+      }
+      if (((bitField0_ & 0x00000002) == 0x00000002)) {
+        output.writeInt32(2, coordinationId_);
+      }
+      if (((bitField0_ & 0x00000004) == 0x00000004)) {
+        output.writeInt32(3, rpcType_);
+      }
+      getUnknownFields().writeTo(output);
+    }
+
+    private int memoizedSerializedSize = -1;
+    public int getSerializedSize() {
+      int size = memoizedSerializedSize;
+      if (size != -1) return size;
+
+      size = 0;
+      if (((bitField0_ & 0x00000001) == 0x00000001)) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeEnumSize(1, mode_.getNumber());
+      }
+      if (((bitField0_ & 0x00000002) == 0x00000002)) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeInt32Size(2, coordinationId_);
+      }
+      if (((bitField0_ & 0x00000004) == 0x00000004)) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeInt32Size(3, rpcType_);
+      }
+      size += getUnknownFields().getSerializedSize();
+      memoizedSerializedSize = size;
+      return size;
+    }
+
+    private static final long serialVersionUID = 0L;
+    @java.lang.Override
+    protected java.lang.Object writeReplace()
+        throws java.io.ObjectStreamException {
+      return super.writeReplace();
+    }
+
+    public static org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeader parseFrom(
+        com.google.protobuf.ByteString data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeader parseFrom(
+        com.google.protobuf.ByteString data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeader parseFrom(byte[] data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeader parseFrom(
+        byte[] data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeader parseFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input);
+    }
+    public static org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeader parseFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input, extensionRegistry);
+    }
+    public static org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeader parseDelimitedFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return PARSER.parseDelimitedFrom(input);
+    }
+    public static org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeader parseDelimitedFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return PARSER.parseDelimitedFrom(input, extensionRegistry);
+    }
+    public static org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeader parseFrom(
+        com.google.protobuf.CodedInputStream input)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input);
+    }
+    public static org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeader parseFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input, extensionRegistry);
+    }
+
+    public static Builder newBuilder() { return Builder.create(); }
+    public Builder newBuilderForType() { return newBuilder(); }
+    public static Builder newBuilder(org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeader prototype) {
+      return newBuilder().mergeFrom(prototype);
+    }
+    public Builder toBuilder() { return newBuilder(this); }
+
+    @java.lang.Override
+    protected Builder newBuilderForType(
+        com.google.protobuf.GeneratedMessage.BuilderParent parent) {
+      Builder builder = new Builder(parent);
+      return builder;
+    }
+    /**
+     * Protobuf type {@code exec.rpc.RpcHeader}
+     */
+    public static final class Builder extends
+        com.google.protobuf.GeneratedMessage.Builder<Builder>
+       implements org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeaderOrBuilder {
+      public static final com.google.protobuf.Descriptors.Descriptor
+          getDescriptor() {
+        return org.apache.drill.exec.proto.GeneralRPCProtos.internal_static_exec_rpc_RpcHeader_descriptor;
+      }
+
+      protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
+          internalGetFieldAccessorTable() {
+        return org.apache.drill.exec.proto.GeneralRPCProtos.internal_static_exec_rpc_RpcHeader_fieldAccessorTable
+            .ensureFieldAccessorsInitialized(
+                org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeader.class, org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeader.Builder.class);
+      }
+
+      // Construct using org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeader.newBuilder()
+      private Builder() {
+        maybeForceBuilderInitialization();
+      }
+
+      private Builder(
+          com.google.protobuf.GeneratedMessage.BuilderParent parent) {
+        super(parent);
+        maybeForceBuilderInitialization();
+      }
+      private void maybeForceBuilderInitialization() {
+        if (com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders) {
+        }
+      }
+      private static Builder create() {
+        return new Builder();
+      }
+
+      public Builder clear() {
+        super.clear();
+        mode_ = org.apache.drill.exec.proto.GeneralRPCProtos.RpcMode.REQUEST;
+        bitField0_ = (bitField0_ & ~0x00000001);
+        coordinationId_ = 0;
+        bitField0_ = (bitField0_ & ~0x00000002);
+        rpcType_ = 0;
+        bitField0_ = (bitField0_ & ~0x00000004);
+        return this;
+      }
+
+      public Builder clone() {
+        return create().mergeFrom(buildPartial());
+      }
+
+      public com.google.protobuf.Descriptors.Descriptor
+          getDescriptorForType() {
+        return org.apache.drill.exec.proto.GeneralRPCProtos.internal_static_exec_rpc_RpcHeader_descriptor;
+      }
+
+      public org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeader getDefaultInstanceForType() {
+        return org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeader.getDefaultInstance();
+      }
+
+      public org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeader build() {
+        org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeader result = buildPartial();
+        if (!result.isInitialized()) {
+          throw newUninitializedMessageException(result);
+        }
+        return result;
+      }
+
+      public org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeader buildPartial() {
+        org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeader result = new org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeader(this);
+        int from_bitField0_ = bitField0_;
+        int to_bitField0_ = 0;
+        if (((from_bitField0_ & 0x00000001) == 0x00000001)) {
+          to_bitField0_ |= 0x00000001;
+        }
+        result.mode_ = mode_;
+        if (((from_bitField0_ & 0x00000002) == 0x00000002)) {
+          to_bitField0_ |= 0x00000002;
+        }
+        result.coordinationId_ = coordinationId_;
+        if (((from_bitField0_ & 0x00000004) == 0x00000004)) {
+          to_bitField0_ |= 0x00000004;
+        }
+        result.rpcType_ = rpcType_;
+        result.bitField0_ = to_bitField0_;
+        onBuilt();
+        return result;
+      }
+
+      public Builder mergeFrom(com.google.protobuf.Message other) {
+        if (other instanceof org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeader) {
+          return mergeFrom((org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeader)other);
+        } else {
+          super.mergeFrom(other);
+          return this;
+        }
+      }
+
+      public Builder mergeFrom(org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeader other) {
+        if (other == org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeader.getDefaultInstance()) return this;
+        if (other.hasMode()) {
+          setMode(other.getMode());
+        }
+        if (other.hasCoordinationId()) {
+          setCoordinationId(other.getCoordinationId());
+        }
+        if (other.hasRpcType()) {
+          setRpcType(other.getRpcType());
+        }
+        this.mergeUnknownFields(other.getUnknownFields());
+        return this;
+      }
+
+      public final boolean isInitialized() {
+        return true;
+      }
+
+      public Builder mergeFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws java.io.IOException {
+        org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeader parsedMessage = null;
+        try {
+          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+          parsedMessage = (org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeader) e.getUnfinishedMessage();
+          throw e;
+        } finally {
+          if (parsedMessage != null) {
+            mergeFrom(parsedMessage);
+          }
+        }
+        return this;
+      }
+      private int bitField0_;
+
+      // optional .exec.rpc.RpcMode mode = 1;
+      private org.apache.drill.exec.proto.GeneralRPCProtos.RpcMode mode_ = org.apache.drill.exec.proto.GeneralRPCProtos.RpcMode.REQUEST;
+      /**
+       * <code>optional .exec.rpc.RpcMode mode = 1;</code>
+       */
+      public boolean hasMode() {
+        return ((bitField0_ & 0x00000001) == 0x00000001);
+      }
+      /**
+       * <code>optional .exec.rpc.RpcMode mode = 1;</code>
+       */
+      public org.apache.drill.exec.proto.GeneralRPCProtos.RpcMode getMode() {
+        return mode_;
+      }
+      /**
+       * <code>optional .exec.rpc.RpcMode mode = 1;</code>
+       */
+      public Builder setMode(org.apache.drill.exec.proto.GeneralRPCProtos.RpcMode value) {
+        if (value == null) {
+          throw new NullPointerException();
+        }
+        bitField0_ |= 0x00000001;
+        mode_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>optional .exec.rpc.RpcMode mode = 1;</code>
+       */
+      public Builder clearMode() {
+        bitField0_ = (bitField0_ & ~0x00000001);
+        mode_ = org.apache.drill.exec.proto.GeneralRPCProtos.RpcMode.REQUEST;
+        onChanged();
+        return this;
+      }
+
+      // optional int32 coordination_id = 2;
+      private int coordinationId_ ;
+      /**
+       * <code>optional int32 coordination_id = 2;</code>
+       *
+       * <pre>
+       * reusable coordination identifier.  Sender defines.  Server returns on return.  Irrelevant for purely single direction rpc.
+       * </pre>
+       */
+      public boolean hasCoordinationId() {
+        return ((bitField0_ & 0x00000002) == 0x00000002);
+      }
+      /**
+       * <code>optional int32 coordination_id = 2;</code>
+       *
+       * <pre>
+       * reusable coordination identifier.  Sender defines.  Server returns on return.  Irrelevant for purely single direction rpc.
+       * </pre>
+       */
+      public int getCoordinationId() {
+        return coordinationId_;
+      }
+      /**
+       * <code>optional int32 coordination_id = 2;</code>
+       *
+       * <pre>
+       * reusable coordination identifier.  Sender defines.  Server returns on return.  Irrelevant for purely single direction rpc.
+       * </pre>
+       */
+      public Builder setCoordinationId(int value) {
+        bitField0_ |= 0x00000002;
+        coordinationId_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>optional int32 coordination_id = 2;</code>
+       *
+       * <pre>
+       * reusable coordination identifier.  Sender defines.  Server returns on return.  Irrelevant for purely single direction rpc.
+       * </pre>
+       */
+      public Builder clearCoordinationId() {
+        bitField0_ = (bitField0_ & ~0x00000002);
+        coordinationId_ = 0;
+        onChanged();
+        return this;
+      }
+
+      // optional int32 rpc_type = 3;
+      private int rpcType_ ;
+      /**
+       * <code>optional int32 rpc_type = 3;</code>
+       *
+       * <pre>
+       * a rpc mode specific rpc type.
+       * </pre>
+       */
+      public boolean hasRpcType() {
+        return ((bitField0_ & 0x00000004) == 0x00000004);
+      }
+      /**
+       * <code>optional int32 rpc_type = 3;</code>
+       *
+       * <pre>
+       * a rpc mode specific rpc type.
+       * </pre>
+       */
+      public int getRpcType() {
+        return rpcType_;
+      }
+      /**
+       * <code>optional int32 rpc_type = 3;</code>
+       *
+       * <pre>
+       * a rpc mode specific rpc type.
+       * </pre>
+       */
+      public Builder setRpcType(int value) {
+        bitField0_ |= 0x00000004;
+        rpcType_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>optional int32 rpc_type = 3;</code>
+       *
+       * <pre>
+       * a rpc mode specific rpc type.
+       * </pre>
+       */
+      public Builder clearRpcType() {
+        bitField0_ = (bitField0_ & ~0x00000004);
+        rpcType_ = 0;
+        onChanged();
+        return this;
+      }
+
+      // @@protoc_insertion_point(builder_scope:exec.rpc.RpcHeader)
+    }
+
+    static {
+      defaultInstance = new RpcHeader(true);
+      defaultInstance.initFields();
+    }
+
+    // @@protoc_insertion_point(class_scope:exec.rpc.RpcHeader)
+  }
+
+  public interface CompleteRpcMessageOrBuilder
+      extends com.google.protobuf.MessageOrBuilder {
+
+    // optional .exec.rpc.RpcHeader header = 1;
+    /**
+     * <code>optional .exec.rpc.RpcHeader header = 1;</code>
+     *
+     * <pre>
+     * required
+     * </pre>
+     */
+    boolean hasHeader();
+    /**
+     * <code>optional .exec.rpc.RpcHeader header = 1;</code>
+     *
+     * <pre>
+     * required
+     * </pre>
+     */
+    org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeader getHeader();
+    /**
+     * <code>optional .exec.rpc.RpcHeader header = 1;</code>
+     *
+     * <pre>
+     * required
+     * </pre>
+     */
+    org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeaderOrBuilder getHeaderOrBuilder();
+
+    // optional bytes protobuf_body = 2;
+    /**
+     * <code>optional bytes protobuf_body = 2;</code>
+     *
+     * <pre>
+     * required
+     * </pre>
+     */
+    boolean hasProtobufBody();
+    /**
+     * <code>optional bytes protobuf_body = 2;</code>
+     *
+     * <pre>
+     * required
+     * </pre>
+     */
+    com.google.protobuf.ByteString getProtobufBody();
+
+    // optional bytes raw_body = 3;
+    /**
+     * <code>optional bytes raw_body = 3;</code>
+     *
+     * <pre>
+     * optional
+     * </pre>
+     */
+    boolean hasRawBody();
+    /**
+     * <code>optional bytes raw_body = 3;</code>
+     *
+     * <pre>
+     * optional
+     * </pre>
+     */
+    com.google.protobuf.ByteString getRawBody();
+  }
+  /**
+   * Protobuf type {@code exec.rpc.CompleteRpcMessage}
+   */
+  public static final class CompleteRpcMessage extends
+      com.google.protobuf.GeneratedMessage
+      implements CompleteRpcMessageOrBuilder {
+    // Use CompleteRpcMessage.newBuilder() to construct.
+    private CompleteRpcMessage(com.google.protobuf.GeneratedMessage.Builder<?> builder) {
+      super(builder);
+      this.unknownFields = builder.getUnknownFields();
+    }
+    private CompleteRpcMessage(boolean noInit) { this.unknownFields = com.google.protobuf.UnknownFieldSet.getDefaultInstance(); }
+
+    private static final CompleteRpcMessage defaultInstance;
+    public static CompleteRpcMessage getDefaultInstance() {
+      return defaultInstance;
+    }
+
+    public CompleteRpcMessage getDefaultInstanceForType() {
+      return defaultInstance;
+    }
+
+    private final com.google.protobuf.UnknownFieldSet unknownFields;
+    @java.lang.Override
+    public final com.google.protobuf.UnknownFieldSet
+        getUnknownFields() {
+      return this.unknownFields;
+    }
+    private CompleteRpcMessage(
+        com.google.protobuf.CodedInputStream input,
+        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 {
+        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.drill.exec.proto.GeneralRPCProtos.RpcHeader.Builder subBuilder = null;
+              if (((bitField0_ & 0x00000001) == 0x00000001)) {
+                subBuilder = header_.toBuilder();
+              }
+              header_ = input.readMessage(org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeader.PARSER, extensionRegistry);
+              if (subBuilder != null) {
+                subBuilder.mergeFrom(header_);
+                header_ = subBuilder.buildPartial();
+              }
+              bitField0_ |= 0x00000001;
+              break;
+            }
+            case 18: {
+              bitField0_ |= 0x00000002;
+              protobufBody_ = input.readBytes();
+              break;
+            }
+            case 26: {
+              bitField0_ |= 0x00000004;
+              rawBody_ = input.readBytes();
+              break;
+            }
+          }
+        }
+      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+        throw e.setUnfinishedMessage(this);
+      } catch (java.io.IOException e) {
+        throw new com.google.protobuf.InvalidProtocolBufferException(
+            e.getMessage()).setUnfinishedMessage(this);
+      } finally {
+        this.unknownFields = unknownFields.build();
+        makeExtensionsImmutable();
+      }
+    }
+    public static final com.google.protobuf.Descriptors.Descriptor
+        getDescriptor() {
+      return org.apache.drill.exec.proto.GeneralRPCProtos.internal_static_exec_rpc_CompleteRpcMessage_descriptor;
+    }
+
+    protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
+        internalGetFieldAccessorTable() {
+      return org.apache.drill.exec.proto.GeneralRPCProtos.internal_static_exec_rpc_CompleteRpcMessage_fieldAccessorTable
+          .ensureFieldAccessorsInitialized(
+              org.apache.drill.exec.proto.GeneralRPCProtos.CompleteRpcMessage.class, org.apache.drill.exec.proto.GeneralRPCProtos.CompleteRpcMessage.Builder.class);
+    }
+
+    public static com.google.protobuf.Parser<CompleteRpcMessage> PARSER =
+        new com.google.protobuf.AbstractParser<CompleteRpcMessage>() {
+      public CompleteRpcMessage parsePartialFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws com.google.protobuf.InvalidProtocolBufferException {
+        return new CompleteRpcMessage(input, extensionRegistry);
+      }
+    };
+
+    @java.lang.Override
+    public com.google.protobuf.Parser<CompleteRpcMessage> getParserForType() {
+      return PARSER;
+    }
+
+    private int bitField0_;
+    // optional .exec.rpc.RpcHeader header = 1;
+    public static final int HEADER_FIELD_NUMBER = 1;
+    private org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeader header_;
+    /**
+     * <code>optional .exec.rpc.RpcHeader header = 1;</code>
+     *
+     * <pre>
+     * required
+     * </pre>
+     */
+    public boolean hasHeader() {
+      return ((bitField0_ & 0x00000001) == 0x00000001);
+    }
+    /**
+     * <code>optional .exec.rpc.RpcHeader header = 1;</code>
+     *
+     * <pre>
+     * required
+     * </pre>
+     */
+    public org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeader getHeader() {
+      return header_;
+    }
+    /**
+     * <code>optional .exec.rpc.RpcHeader header = 1;</code>
+     *
+     * <pre>
+     * required
+     * </pre>
+     */
+    public org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeaderOrBuilder getHeaderOrBuilder() {
+      return header_;
+    }
+
+    // optional bytes protobuf_body = 2;
+    public static final int PROTOBUF_BODY_FIELD_NUMBER = 2;
+    private com.google.protobuf.ByteString protobufBody_;
+    /**
+     * <code>optional bytes protobuf_body = 2;</code>
+     *
+     * <pre>
+     * required
+     * </pre>
+     */
+    public boolean hasProtobufBody() {
+      return ((bitField0_ & 0x00000002) == 0x00000002);
+    }
+    /**
+     * <code>optional bytes protobuf_body = 2;</code>
+     *
+     * <pre>
+     * required
+     * </pre>
+     */
+    public com.google.protobuf.ByteString getProtobufBody() {
+      return protobufBody_;
+    }
+
+    // optional bytes raw_body = 3;
+    public static final int RAW_BODY_FIELD_NUMBER = 3;
+    private com.google.protobuf.ByteString rawBody_;
+    /**
+     * <code>optional bytes raw_body = 3;</code>
+     *
+     * <pre>
+     * optional
+     * </pre>
+     */
+    public boolean hasRawBody() {
+      return ((bitField0_ & 0x00000004) == 0x00000004);
+    }
+    /**
+     * <code>optional bytes raw_body = 3;</code>
+     *
+     * <pre>
+     * optional
+     * </pre>
+     */
+    public com.google.protobuf.ByteString getRawBody() {
+      return rawBody_;
+    }
+
+    private void initFields() {
+      header_ = org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeader.getDefaultInstance();
+      protobufBody_ = com.google.protobuf.ByteString.EMPTY;
+      rawBody_ = com.google.protobuf.ByteString.EMPTY;
+    }
+    private byte memoizedIsInitialized = -1;
+    public final boolean isInitialized() {
+      byte isInitialized = memoizedIsInitialized;
+      if (isInitialized != -1) return isInitialized == 1;
+
+      memoizedIsInitialized = 1;
+      return true;
+    }
+
+    public void writeTo(com.google.protobuf.CodedOutputStream output)
+                        throws java.io.IOException {
+      getSerializedSize();
+      if (((bitField0_ & 0x00000001) == 0x00000001)) {
+        output.writeMessage(1, header_);
+      }
+      if (((bitField0_ & 0x00000002) == 0x00000002)) {
+        output.writeBytes(2, protobufBody_);
+      }
+      if (((bitField0_ & 0x00000004) == 0x00000004)) {
+        output.writeBytes(3, rawBody_);
+      }
+      getUnknownFields().writeTo(output);
+    }
+
+    private int memoizedSerializedSize = -1;
+    public int getSerializedSize() {
+      int size = memoizedSerializedSize;
+      if (size != -1) return size;
+
+      size = 0;
+      if (((bitField0_ & 0x00000001) == 0x00000001)) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeMessageSize(1, header_);
+      }
+      if (((bitField0_ & 0x00000002) == 0x00000002)) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeBytesSize(2, protobufBody_);
+      }
+      if (((bitField0_ & 0x00000004) == 0x00000004)) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeBytesSize(3, rawBody_);
+      }
+      size += getUnknownFields().getSerializedSize();
+      memoizedSerializedSize = size;
+      return size;
+    }
+
+    private static final long serialVersionUID = 0L;
+    @java.lang.Override
+    protected java.lang.Object writeReplace()
+        throws java.io.ObjectStreamException {
+      return super.writeReplace();
+    }
+
+    public static org.apache.drill.exec.proto.GeneralRPCProtos.CompleteRpcMessage parseFrom(
+        com.google.protobuf.ByteString data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static org.apache.drill.exec.proto.GeneralRPCProtos.CompleteRpcMessage parseFrom(
+        com.google.protobuf.ByteString data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static org.apache.drill.exec.proto.GeneralRPCProtos.CompleteRpcMessage parseFrom(byte[] data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static org.apache.drill.exec.proto.GeneralRPCProtos.CompleteRpcMessage parseFrom(
+        byte[] data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static org.apache.drill.exec.proto.GeneralRPCProtos.CompleteRpcMessage parseFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input);
+    }
+    public static org.apache.drill.exec.proto.GeneralRPCProtos.CompleteRpcMessage parseFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input, extensionRegistry);
+    }
+    public static org.apache.drill.exec.proto.GeneralRPCProtos.CompleteRpcMessage parseDelimitedFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return PARSER.parseDelimitedFrom(input);
+    }
+    public static org.apache.drill.exec.proto.GeneralRPCProtos.CompleteRpcMessage parseDelimitedFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return PARSER.parseDelimitedFrom(input, extensionRegistry);
+    }
+    public static org.apache.drill.exec.proto.GeneralRPCProtos.CompleteRpcMessage parseFrom(
+        com.google.protobuf.CodedInputStream input)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input);
+    }
+    public static org.apache.drill.exec.proto.GeneralRPCProtos.CompleteRpcMessage parseFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input, extensionRegistry);
+    }
+
+    public static Builder newBuilder() { return Builder.create(); }
+    public Builder newBuilderForType() { return newBuilder(); }
+    public static Builder newBuilder(org.apache.drill.exec.proto.GeneralRPCProtos.CompleteRpcMessage prototype) {
+      return newBuilder().mergeFrom(prototype);
+    }
+    public Builder toBuilder() { return newBuilder(this); }
+
+    @java.lang.Override
+    protected Builder newBuilderForType(
+        com.google.protobuf.GeneratedMessage.BuilderParent parent) {
+      Builder builder = new Builder(parent);
+      return builder;
+    }
+    /**
+     * Protobuf type {@code exec.rpc.CompleteRpcMessage}
+     */
+    public static final class Builder extends
+        com.google.protobuf.GeneratedMessage.Builder<Builder>
+       implements org.apache.drill.exec.proto.GeneralRPCProtos.CompleteRpcMessageOrBuilder {
+      public static final com.google.protobuf.Descriptors.Descriptor
+          getDescriptor() {
+        return org.apache.drill.exec.proto.GeneralRPCProtos.internal_static_exec_rpc_CompleteRpcMessage_descriptor;
+      }
+
+      protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
+          internalGetFieldAccessorTable() {
+        return org.apache.drill.exec.proto.GeneralRPCProtos.internal_static_exec_rpc_CompleteRpcMessage_fieldAccessorTable
+            .ensureFieldAccessorsInitialized(
+                org.apache.drill.exec.proto.GeneralRPCProtos.CompleteRpcMessage.class, org.apache.drill.exec.proto.GeneralRPCProtos.CompleteRpcMessage.Builder.class);
+      }
+
+      // Construct using org.apache.drill.exec.proto.GeneralRPCProtos.CompleteRpcMessage.newBuilder()
+      private Builder() {
+        maybeForceBuilderInitialization();
+      }
+
+      private Builder(
+          com.google.protobuf.GeneratedMessage.BuilderParent parent) {
+        super(parent);
+        maybeForceBuilderInitialization();
+      }
+      private void maybeForceBuilderInitialization() {
+        if (com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders) {
+          getHeaderFieldBuilder();
+        }
+      }
+      private static Builder create() {
+        return new Builder();
+      }
+
+      public Builder clear() {
+        super.clear();
+        if (headerBuilder_ == null) {
+          header_ = org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeader.getDefaultInstance();
+        } else {
+          headerBuilder_.clear();
+        }
+        bitField0_ = (bitField0_ & ~0x00000001);
+        protobufBody_ = com.google.protobuf.ByteString.EMPTY;
+        bitField0_ = (bitField0_ & ~0x00000002);
+        rawBody_ = com.google.protobuf.ByteString.EMPTY;
+        bitField0_ = (bitField0_ & ~0x00000004);
+        return this;
+      }
+
+      public Builder clone() {
+        return create().mergeFrom(buildPartial());
+      }
+
+      public com.google.protobuf.Descriptors.Descriptor
+          getDescriptorForType() {
+        return org.apache.drill.exec.proto.GeneralRPCProtos.internal_static_exec_rpc_CompleteRpcMessage_descriptor;
+      }
+
+      public org.apache.drill.exec.proto.GeneralRPCProtos.CompleteRpcMessage getDefaultInstanceForType() {
+        return org.apache.drill.exec.proto.GeneralRPCProtos.CompleteRpcMessage.getDefaultInstance();
+      }
+
+      public org.apache.drill.exec.proto.GeneralRPCProtos.CompleteRpcMessage build() {
+        org.apache.drill.exec.proto.GeneralRPCProtos.CompleteRpcMessage result = buildPartial();
+        if (!result.isInitialized()) {
+          throw newUninitializedMessageException(result);
+        }
+        return result;
+      }
+
+      public org.apache.drill.exec.proto.GeneralRPCProtos.CompleteRpcMessage buildPartial() {
+        org.apache.drill.exec.proto.GeneralRPCProtos.CompleteRpcMessage result = new org.apache.drill.exec.proto.GeneralRPCProtos.CompleteRpcMessage(this);
+        int from_bitField0_ = bitField0_;
+        int to_bitField0_ = 0;
+        if (((from_bitField0_ & 0x00000001) == 0x00000001)) {
+          to_bitField0_ |= 0x00000001;
+        }
+        if (headerBuilder_ == null) {
+          result.header_ = header_;
+        } else {
+          result.header_ = headerBuilder_.build();
+        }
+        if (((from_bitField0_ & 0x00000002) == 0x00000002)) {
+          to_bitField0_ |= 0x00000002;
+        }
+        result.protobufBody_ = protobufBody_;
+        if (((from_bitField0_ & 0x00000004) == 0x00000004)) {
+          to_bitField0_ |= 0x00000004;
+        }
+        result.rawBody_ = rawBody_;
+        result.bitField0_ = to_bitField0_;
+        onBuilt();
+        return result;
+      }
+
+      public Builder mergeFrom(com.google.protobuf.Message other) {
+        if (other instanceof org.apache.drill.exec.proto.GeneralRPCProtos.CompleteRpcMessage) {
+          return mergeFrom((org.apache.drill.exec.proto.GeneralRPCProtos.CompleteRpcMessage)other);
+        } else {
+          super.mergeFrom(other);
+          return this;
+        }
+      }
+
+      public Builder mergeFrom(org.apache.drill.exec.proto.GeneralRPCProtos.CompleteRpcMessage other) {
+        if (other == org.apache.drill.exec.proto.GeneralRPCProtos.CompleteRpcMessage.getDefaultInstance()) return this;
+        if (other.hasHeader()) {
+          mergeHeader(other.getHeader());
+        }
+        if (other.hasProtobufBody()) {
+          setProtobufBody(other.getProtobufBody());
+        }
+        if (other.hasRawBody()) {
+          setRawBody(other.getRawBody());
+        }
+        this.mergeUnknownFields(other.getUnknownFields());
+        return this;
+      }
+
+      public final boolean isInitialized() {
+        return true;
+      }
+
+      public Builder mergeFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws java.io.IOException {
+        org.apache.drill.exec.proto.GeneralRPCProtos.CompleteRpcMessage parsedMessage = null;
+        try {
+          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+          parsedMessage = (org.apache.drill.exec.proto.GeneralRPCProtos.CompleteRpcMessage) e.getUnfinishedMessage();
+          throw e;
+        } finally {
+          if (parsedMessage != null) {
+            mergeFrom(parsedMessage);
+          }
+        }
+        return this;
+      }
+      private int bitField0_;
+
+      // optional .exec.rpc.RpcHeader header = 1;
+      private org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeader header_ = org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeader.getDefaultInstance();
+      private com.google.protobuf.SingleFieldBuilder<
+          org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeader, org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeader.Builder, org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeaderOrBuilder> headerBuilder_;
+      /**
+       * <code>optional .exec.rpc.RpcHeader header = 1;</code>
+       *
+       * <pre>
+       * required
+       * </pre>
+       */
+      public boolean hasHeader() {
+        return ((bitField0_ & 0x00000001) == 0x00000001);
+      }
+      /**
+       * <code>optional .exec.rpc.RpcHeader header = 1;</code>
+       *
+       * <pre>
+       * required
+       * </pre>
+       */
+      public org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeader getHeader() {
+        if (headerBuilder_ == null) {
+          return header_;
+        } else {
+          return headerBuilder_.getMessage();
+        }
+      }
+      /**
+       * <code>optional .exec.rpc.RpcHeader header = 1;</code>
+       *
+       * <pre>
+       * required
+       * </pre>
+       */
+      public Builder setHeader(org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeader value) {
+        if (headerBuilder_ == null) {
+          if (value == null) {
+            throw new NullPointerException();
+          }
+          header_ = value;
+          onChanged();
+        } else {
+          headerBuilder_.setMessage(value);
+        }
+        bitField0_ |= 0x00000001;
+        return this;
+      }
+      /**
+       * <code>optional .exec.rpc.RpcHeader header = 1;</code>
+       *
+       * <pre>
+       * required
+       * </pre>
+       */
+      public Builder setHeader(
+          org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeader.Builder builderForValue) {
+        if (headerBuilder_ == null) {
+          header_ = builderForValue.build();
+          onChanged();
+        } else {
+          headerBuilder_.setMessage(builderForValue.build());
+        }
+        bitField0_ |= 0x00000001;
+        return this;
+      }
+      /**
+       * <code>optional .exec.rpc.RpcHeader header = 1;</code>
+       *
+       * <pre>
+       * required
+       * </pre>
+       */
+      public Builder mergeHeader(org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeader value) {
+        if (headerBuilder_ == null) {
+          if (((bitField0_ & 0x00000001) == 0x00000001) &&
+              header_ != org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeader.getDefaultInstance()) {
+            header_ =
+              org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeader.newBuilder(header_).mergeFrom(value).buildPartial();
+          } else {
+            header_ = value;
+          }
+          onChanged();
+        } else {
+          headerBuilder_.mergeFrom(value);
+        }
+        bitField0_ |= 0x00000001;
+        return this;
+      }
+      /**
+       * <code>optional .exec.rpc.RpcHeader header = 1;</code>
+       *
+       * <pre>
+       * required
+       * </pre>
+       */
+      public Builder clearHeader() {
+        if (headerBuilder_ == null) {
+          header_ = org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeader.getDefaultInstance();
+          onChanged();
+        } else {
+          headerBuilder_.clear();
+        }
+        bitField0_ = (bitField0_ & ~0x00000001);
+        return this;
+      }
+      /**
+       * <code>optional .exec.rpc.RpcHeader header = 1;</code>
+       *
+       * <pre>
+       * required
+       * </pre>
+       */
+      public org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeader.Builder getHeaderBuilder() {
+        bitField0_ |= 0x00000001;
+        onChanged();
+        return getHeaderFieldBuilder().getBuilder();
+      }
+      /**
+       * <code>optional .exec.rpc.RpcHeader header = 1;</code>
+       *
+       * <pre>
+       * required
+       * </pre>
+       */
+      public org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeaderOrBuilder getHeaderOrBuilder() {
+        if (headerBuilder_ != null) {
+          return headerBuilder_.getMessageOrBuilder();
+        } else {
+          return header_;
+        }
+      }
+      /**
+       * <code>optional .exec.rpc.RpcHeader header = 1;</code>
+       *
+       * <pre>
+       * required
+       * </pre>
+       */
+      private com.google.protobuf.SingleFieldBuilder<
+          org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeader, org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeader.Builder, org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeaderOrBuilder> 
+          getHeaderFieldBuilder() {
+        if (headerBuilder_ == null) {
+          headerBuilder_ = new com.google.protobuf.SingleFieldBuilder<
+              org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeader, org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeader.Builder, org.apache.drill.exec.proto.GeneralRPCProtos.RpcHeaderOrBuilder>(
+                  header_,
+                  getParentForChildren(),
+                  isClean());
+          header_ = null;
+        }
+        return headerBuilder_;
+      }
+
+      // optional bytes protobuf_body = 2;
+      private com.google.protobuf.ByteString protobufBody_ = com.google.protobuf.ByteString.EMPTY;
+      /**
+       * <code>optional bytes protobuf_body = 2;</code>
+       *
+       * <pre>
+       * required
+       * </pre>
+       */
+      public boolean hasProtobufBody() {
+        return ((bitField0_ & 0x00000002) == 0x00000002);
+      }
+      /**
+       * <code>optional bytes protobuf_body = 2;</code>
+       *
+       * <pre>
+       * required
+       * </pre>
+       */
+      public com.google.protobuf.ByteString getProtobufBody() {
+        return protobufBody_;
+      }
+      /**
+       * <code>optional bytes protobuf_body = 2;</code>
+       *
+       * <pre>
+       * required
+       * </pre>
+       */
+      public Builder setProtobufBody(com.google.protobuf.ByteString value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  bitField0_ |= 0x00000002;
+        protobufBody_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>optional bytes protobuf_body = 2;</code>
+       *
+       * <pre>
+       * required
+       * </pre>
+       */
+      public Builder clearProtobufBody() {
+        bitField0_ = (bitField0_ & ~0x00000002);
+        protobufBody_ = getDefaultInstance().getProtobufBody();
+        onChanged();
+        return this;
+      }
+
+      // optional bytes raw_body = 3;
+      private com.google.protobuf.ByteString rawBody_ = com.google.protobuf.ByteString.EMPTY;
+      /**
+       * <code>optional bytes raw_body = 3;</code>
+       *
+       * <pre>
+       * optional
+       * </pre>
+       */
+      public boolean hasRawBody() {
+        return ((bitField0_ & 0x00000004) == 0x00000004);
+      }
+      /**
+       * <code>optional bytes raw_body = 3;</code>
+       *
+       * <pre>
+       * optional
+       * </pre>
+       */
+      public com.google.protobuf.ByteString getRawBody() {
+        return rawBody_;
+      }
+      /**
+       * <code>optional bytes raw_body = 3;</code>
+       *
+       * <pre>
+       * optional
+       * </pre>
+       */
+      public Builder setRawBody(com.google.protobuf.ByteString value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  bitField0_ |= 0x00000004;
+        rawBody_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>optional bytes raw_body = 3;</code>
+       *
+       * <pre>
+       * optional
+       * </pre>
+       */
+      public Builder clearRawBody() {
+        bitField0_ = (bitField0_ & ~0x00000004);
+        rawBody_ = getDefaultInstance().getRawBody();
+        onChanged();
+        return this;
+      }
+
+      // @@protoc_insertion_point(builder_scope:exec.rpc.CompleteRpcMessage)
+    }
+
+    static {
+      defaultInstance = new CompleteRpcMessage(true);
+      defaultInstance.initFields();
+    }
+
+    // @@protoc_insertion_point(class_scope:exec.rpc.CompleteRpcMessage)
+  }
+
+  public interface RpcFailureOrBuilder
+      extends com.google.protobuf.MessageOrBuilder {
+
+    // optional int64 error_id = 1;
+    /**
+     * <code>optional int64 error_id = 1;</code>
+     *
+     * <pre>
+     * for server trackback.
+     * </pre>
+     */
+    boolean hasErrorId();
+    /**
+     * <code>optional int64 error_id = 1;</code>
+     *
+     * <pre>
+     * for server trackback.
+     * </pre>
+     */
+    long getErrorId();
+
+    // optional int32 error_code = 2;
+    /**
+     * <code>optional int32 error_code = 2;</code>
+     *
+     * <pre>
+     * system defined error code.
+     * </pre>
+     */
+    boolean hasErrorCode();
+    /**
+     * <code>optional int32 error_code = 2;</code>
+     *
+     * <pre>
+     * system defined error code.
+     * </pre>
+     */
+    int getErrorCode();
+
+    // optional string short_error = 3;
+    /**
+     * <code>optional string short_error = 3;</code>
+     */
+    boolean hasShortError();
+    /**
+     * <code>optional string short_error = 3;</code>
+     */
+    java.lang.String getShortError();
+    /**
+     * <code>optional string short_error = 3;</code>
+     */
+    com.google.protobuf.ByteString
+        getShortErrorBytes();
+
+    // optional string long_error = 4;
+    /**
+     * <code>optional string long_error = 4;</code>
+     */
+    boolean hasLongError();
+    /**
+     * <code>optional string long_error = 4;</code>
+     */
+    java.lang.String getLongError();
+    /**
+     * <code>optional string long_error = 4;</code>
+     */
+    com.google.protobuf.ByteString
+        getLongErrorBytes();
+  }
+  /**
+   * Protobuf type {@code exec.rpc.RpcFailure}
+   *
+   * <pre>
+   * Class to be used when an unexpected exception occurs while a rpc call is being evaluated.
+   * </pre>
+   */
+  public static final class RpcFailure extends
+      com.google.protobuf.GeneratedMessage
+      implements RpcFailureOrBuilder {
+    // Use RpcFailure.newBuilder() to construct.
+    private RpcFailure(com.google.protobuf.GeneratedMessage.Builder<?> builder) {
+      super(builder);
+      this.unknownFields = builder.getUnknownFields();
+    }
+    private RpcFailure(boolean noInit) { this.unknownFields = com.google.protobuf.UnknownFieldSet.getDefaultInstance(); }
+
+    private static final RpcFailure defaultInstance;
+    public static RpcFailure getDefaultInstance() {
+      return defaultInstance;
+    }
+
+    public RpcFailure getDefaultInstanceForType() {
+      return defaultInstance;
+    }
+
+    private final com.google.protobuf.UnknownFieldSet unknownFields;
+    @java.lang.Override
+    public final com.google.protobuf.UnknownFieldSet
+        getUnknownFields() {
+      return this.unknownFields;
+    }
+    private RpcFailure(
+        com.google.protobuf.CodedInputStream input,
+        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 {
+        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 8: {
+              bitField0_ |= 0x00000001;
+              errorId_ = input.readInt64();
+              break;
+            }
+            case 16: {
+              bitField0_ |= 0x00000002;
+              errorCode_ = input.readInt32();
+              break;
+            }
+            case 26: {
+              bitField0_ |= 0x00000004;
+              shortError_ = input.readBytes();
+              break;
+            }
+            case 34: {
+              bitField0_ |= 0x00000008;
+              longError_ = input.readBytes();
+              break;
+            }
+          }
+        }
+      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+        throw e.setUnfinishedMessage(this);
+      } catch (java.io.IOException e) {
+        throw new com.google.protobuf.InvalidProtocolBufferException(
+            e.getMessage()).setUnfinishedMessage(this);
+      } finally {
+        this.unknownFields = unknownFields.build();
+        makeExtensionsImmutable();
+      }
+    }
+    public static final com.google.protobuf.Descriptors.Descriptor
+        getDescriptor() {
+      return org.apache.drill.exec.proto.GeneralRPCProtos.internal_static_exec_rpc_RpcFailure_descriptor;
+    }
+
+    protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
+        internalGetFieldAccessorTable() {
+      return org.apache.drill.exec.proto.GeneralRPCProtos.internal_static_exec_rpc_RpcFailure_fieldAccessorTable
+          .ensureFieldAccessorsInitialized(
+              org.apache.drill.exec.proto.GeneralRPCProtos.RpcFailure.class, org.apache.drill.exec.proto.GeneralRPCProtos.RpcFailure.Builder.class);
+    }
+
+    public static com.google.protobuf.Parser<RpcFailure> PARSER =
+        new com.google.protobuf.AbstractParser<RpcFailure>() {
+      public RpcFailure parsePartialFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws com.google.protobuf.InvalidProtocolBufferException {
+        return new RpcFailure(input, extensionRegistry);
+      }
+    };
+
+    @java.lang.Override
+    public com.google.protobuf.Parser<RpcFailure> getParserForType() {
+      return PARSER;
+    }
+
+    private int bitField0_;
+    // optional int64 error_id = 1;
+    public static final int ERROR_ID_FIELD_NUMBER = 1;
+    private long errorId_;
+    /**
+     * <code>optional int64 error_id = 1;</code>
+     *
+     * <pre>
+     * for server trackback.
+     * </pre>
+     */
+    public boolean hasErrorId() {
+      return ((bitField0_ & 0x00000001) == 0x00000001);
+    }
+    /**
+     * <code>optional int64 error_id = 1;</code>
+     *
+     * <pre>
+     * for server trackback.
+     * </pre>
+     */
+    public long getErrorId() {
+      return errorId_;
+    }
+
+    // optional int32 error_code = 2;
+    public static final int ERROR_CODE_FIELD_NUMBER = 2;
+    private int errorCode_;
+    /**
+     * <code>optional int32 error_code = 2;</code>
+     *
+     * <pre>
+     * system defined error code.
+     * </pre>
+     */
+    public boolean hasErrorCode() {
+      return ((bitField0_ & 0x00000002) == 0x00000002);
+    }
+    /**
+     * <code>optional int32 error_code = 2;</code>
+     *
+     * <pre>
+     * system defined error code.
+     * </pre>
+     */
+    public int getErrorCode() {
+      return errorCode_;
+    }
+
+    // optional string short_error = 3;
+    public static final int SHORT_ERROR_FIELD_NUMBER = 3;
+    private java.lang.Object shortError_;
+    /**
+     * <code>optional string short_error = 3;</code>
+     */
+    public boolean hasShortError() {
+      return ((bitField0_ & 0x00000004) == 0x00000004);
+    }
+    /**
+     * <code>optional string short_error = 3;</code>
+     */
+    public java.lang.String getShortError() {
+      java.lang.Object ref = shortError_;
+      if (ref instanceof java.lang.String) {
+        return (java.lang.String) ref;
+      } else {
+        com.google.protobuf.ByteString bs = 
+            (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        if (bs.isValidUtf8()) {
+          shortError_ = s;
+        }
+        return s;
+      }
+    }
+    /**
+     * <code>optional string short_error = 3;</code>
+     */
+    public com.google.protobuf.ByteString
+        getShortErrorBytes() {
+      java.lang.Object ref = shortError_;
+      if (ref instanceof java.lang.String) {
+        com.google.protobuf.ByteString b = 
+            com.google.protobuf.ByteString.copyFromUtf8(
+                (java.lang.String) ref);
+        shortError_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+
+    // optional string long_error = 4;
+    public static final int LONG_ERROR_FIELD_NUMBER = 4;
+    private java.lang.Object longError_;
+    /**
+     * <code>optional string long_error = 4;</code>
+     */
+    public boolean hasLongError() {
+      return ((bitField0_ & 0x00000008) == 0x00000008);
+    }
+    /**
+     * <code>optional string long_error = 4;</code>
+     */
+    public java.lang.String getLongError() {
+      java.lang.Object ref = longError_;
+      if (ref instanceof java.lang.String) {
+        return (java.lang.String) ref;
+      } else {
+        com.google.protobuf.ByteString bs = 
+            (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        if (bs.isValidUtf8()) {
+          longError_ = s;
+        }
+        return s;
+      }
+    }
+    /**
+     * <code>optional string long_error = 4;</code>
+     */
+    public com.google.protobuf.ByteString
+        getLongErrorBytes() {
+      java.lang.Object ref = longError_;
+      if (ref instanceof java.lang.String) {
+        com.google.protobuf.ByteString b = 
+            com.google.protobuf.ByteString.copyFromUtf8(
+                (java.lang.String) ref);
+        longError_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+
+    private void initFields() {
+      errorId_ = 0L;
+      errorCode_ = 0;
+      shortError_ = "";
+      longError_ = "";
+    }
+    private byte memoizedIsInitialized = -1;
+    public final boolean isInitialized() {
+      byte isInitialized = memoizedIsInitialized;
+      if (isInitialized != -1) return isInitialized == 1;
+
+      memoizedIsInitialized = 1;
+      return true;
+    }
+
+    public void writeTo(com.google.protobuf.CodedOutputStream output)
+                        throws java.io.IOException {
+      getSerializedSize();
+      if (((bitField0_ & 0x00000001) == 0x00000001)) {
+        output.writeInt64(1, errorId_);
+      }
+      if (((bitField0_ & 0x00000002) == 0x00000002)) {
+        output.writeInt32(2, errorCode_);
+      }
+      if (((bitField0_ & 0x00000004) == 0x00000004)) {
+        output.writeBytes(3, getShortErrorBytes());
+      }
+      if (((bitField0_ & 0x00000008) == 0x00000008)) {
+        output.writeBytes(4, getLongErrorBytes());
+      }
+      getUnknownFields().writeTo(output);
+    }
+
+    private int memoizedSerializedSize = -1;
+    public int getSerializedSize() {
+      int size = memoizedSerializedSize;
+      if (size != -1) return size;
+
+      size = 0;
+      if (((bitField0_ & 0x00000001) == 0x00000001)) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeInt64Size(1, errorId_);
+      }
+      if (((bitField0_ & 0x00000002) == 0x00000002)) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeInt32Size(2, errorCode_);
+      }
+      if (((bitField0_ & 0x00000004) == 0x00000004)) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeBytesSize(3, getShortErrorBytes());
+      }
+      if (((bitField0_ & 0x00000008) == 0x00000008)) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeBytesSize(4, getLongErrorBytes());
+      }
+      size += getUnknownFields().getSerializedSize();
+      memoizedSerializedSize = size;
+      return size;
+    }
+
+    private static final long serialVersionUID = 0L;
+    @java.lang.Override
+    protected java.lang.Object writeReplace()
+        throws java.io.ObjectStreamException {
+      return super.writeReplace();
+    }
+
+    public static org.apache.drill.exec.proto.GeneralRPCProtos.RpcFailure parseFrom(
+        com.google.protobuf.ByteString data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static org.apache.drill.exec.proto.GeneralRPCProtos.RpcFailure parseFrom(
+        com.google.protobuf.ByteString data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static org.apache.drill.exec.proto.GeneralRPCProtos.RpcFailure parseFrom(byte[] data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static org.apache.drill.exec.proto.GeneralRPCProtos.RpcFailure parseFrom(
+        byte[] data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static org.apache.drill.exec.proto.GeneralRPCProtos.RpcFailure parseFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input);
+    }
+    public static org.apache.drill.exec.proto.GeneralRPCProtos.RpcFailure parseFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input, extensionRegistry);
+    }
+    public static org.apache.drill.exec.proto.GeneralRPCProtos.RpcFailure parseDelimitedFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return PARSER.parseDelimitedFrom(input);
+    }
+    public static org.apache.drill.exec.proto.GeneralRPCProtos.RpcFailure parseDelimitedFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return PARSER.parseDelimitedFrom(input, extensionRegistry);
+    }
+    public static org.apache.drill.exec.proto.GeneralRPCProtos.RpcFailure parseFrom(
+        com.google.protobuf.CodedInputStream input)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input);
+    }
+    public static org.apache.drill.exec.proto.GeneralRPCProtos.RpcFailure parseFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input, extensionRegistry);
+    }
+
+    public static Builder newBuilder() { return Builder.create(); }
+    public Builder newBuilderForType() { return newBuilder(); }
+    public static Builder newBuilder(org.apache.drill.exec.proto.GeneralRPCProtos.RpcFailure prototype) {
+      return newBuilder().mergeFrom(prototype);
+    }
+    public Builder toBuilder() { return newBuilder(this); }
+
+    @java.lang.Override
+    protected Builder newBuilderForType(
+        com.google.protobuf.GeneratedMessage.BuilderParent parent) {
+      Builder builder = new Builder(parent);
+      return builder;
+    }
+    /**
+     * Protobuf type {@code exec.rpc.RpcFailure}
+     *
+     * <pre>
+     * Class to be used when an unexpected exception occurs while a rpc call is being evaluated.
+     * </pre>
+     */
+    public static final class Builder extends
+        com.google.protobuf.GeneratedMessage.Builder<Builder>
+       implements org.apache.drill.exec.proto.GeneralRPCProtos.RpcFailureOrBuilder {
+      public static final com.google.protobuf.Descriptors.Descriptor
+          getDescriptor() {
+        return org.apache.drill.exec.proto.GeneralRPCProtos.internal_static_exec_rpc_RpcFailure_descriptor;
+      }
+
+      protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
+          internalGetFieldAccessorTable() {
+        return org.apache.drill.exec.proto.GeneralRPCProtos.internal_static_exec_rpc_RpcFailure_fieldAccessorTable
+            .ensureFieldAccessorsInitialized(
+                org.apache.drill.exec.proto.GeneralRPCProtos.RpcFailure.class, org.apache.drill.exec.proto.GeneralRPCProtos.RpcFailure.Builder.class);
+      }
+
+      // Construct using org.apache.drill.exec.proto.GeneralRPCProtos.RpcFailure.newBuilder()
+      private Builder() {
+        maybeForceBuilderInitialization();
+      }
+
+      private Builder(
+          com.google.protobuf.GeneratedMessage.BuilderParent parent) {
+        super(parent);
+        maybeForceBuilderInitialization();
+      }
+      private void maybeForceBuilderInitialization() {
+        if (com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders) {
+        }
+      }
+      private static Builder create() {
+        return new Builder();
+      }
+
+      public Builder clear() {
+        super.clear();
+        errorId_ = 0L;
+        bitField0_ = (bitField0_ & ~0x00000001);
+        errorCode_ = 0;
+        bitField0_ = (bitField0_ & ~0x00000002);
+        shortError_ = "";
+        bitField0_ = (bitField0_ & ~0x00000004);
+        longError_ = "";
+        bitField0_ = (bitField0_ & ~0x00000008);
+        return this;
+      }
+
+      public Builder clone() {
+        return create().mergeFrom(buildPartial());
+      }
+
+      public com.google.protobuf.Descriptors.Descriptor
+          getDescriptorForType() {
+        return org.apache.drill.exec.proto.GeneralRPCProtos.internal_static_exec_rpc_RpcFailure_descriptor;
+      }
+
+      public org.apache.drill.exec.proto.GeneralRPCProtos.RpcFailure getDefaultInstanceForType() {
+        return org.apache.drill.exec.proto.GeneralRPCProtos.RpcFailure.getDefaultInstance();
+      }
+
+      public org.apache.drill.exec.proto.GeneralRPCProtos.RpcFailure build() {
+        org.apache.drill.exec.proto.GeneralRPCProtos.RpcFailure result = buildPartial();
+        if (!result.isInitialized()) {
+          throw newUninitializedMessageException(result);
+        }
+        return result;
+      }
+
+      public org.apache.drill.exec.proto.GeneralRPCProtos.RpcFailure buildPartial() {
+        org.apache.drill.exec.proto.GeneralRPCProtos.RpcFailure result = new org.apache.drill.exec.proto.GeneralRPCProtos.RpcFailure(this);
+        int from_bitField0_ = bitField0_;
+        int to_bitField0_ = 0;
+        if (((from_bitField0_ & 0x00000001) == 0x00000001)) {
+          to_bitField0_ |= 0x00000001;
+        }
+        result.errorId_ = errorId_;
+        if (((from_bitField0_ & 0x00000002) == 0x00000002)) {
+          to_bitField0_ |= 0x00000002;
+        }
+        result.errorCode_ = errorCode_;
+        if (((from_bitField0_ & 0x00000004) == 0x00000004)) {
+          to_bitField0_ |= 0x00000004;
+        }
+        result.shortError_ = shortError_;
+        if (((from_bitField0_ & 0x00000008) == 0x00000008)) {
+          to_bitField0_ |= 0x00000008;
+        }
+        result.longError_ = longError_;
+        result.bitField0_ = to_bitField0_;
+        onBuilt();
+        return result;
+      }
+
+      public Builder mergeFrom(com.google.protobuf.Message other) {
+        if (other instanceof org.apache.drill.exec.proto.GeneralRPCProtos.RpcFailure) {
+          return mergeFrom((org.apache.drill.exec.proto.GeneralRPCProtos.RpcFailure)other);
+        } else {
+          super.mergeFrom(other);
+          return this;
+        }
+      }
+
+      public Builder mergeFrom(org.apache.drill.exec.proto.GeneralRPCProtos.RpcFailure other) {
+        if (other == org.apache.drill.exec.proto.GeneralRPCProtos.RpcFailure.getDefaultInstance()) return this;
+        if (other.hasErrorId()) {
+          setErrorId(other.getErrorId());
+        }
+        if (other.hasErrorCode()) {
+          setErrorCode(other.getErrorCode());
+        }
+        if (other.hasShortError()) {
+          bitField0_ |= 0x00000004;
+          shortError_ = other.shortError_;
+          onChanged();
+        }
+        if (other.hasLongError()) {
+          bitField0_ |= 0x00000008;
+          longError_ = other.longError_;
+          onChanged();
+        }
+        this.mergeUnknownFields(other.getUnknownFields());
+        return this;
+      }
+
+      public final boolean isInitialized() {
+        return true;
+      }
+
+      public Builder mergeFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws java.io.IOException {
+        org.apache.drill.exec.proto.GeneralRPCProtos.RpcFailure parsedMessage = null;
+        try {
+          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+          parsedMessage = (org.apache.drill.exec.proto.GeneralRPCProtos.RpcFailure) e.getUnfinishedMessage();
+          throw e;
+        } finally {
+          if (parsedMessage != null) {
+   

<TRUNCATED>