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From els...@apache.org
Subject [18/50] [abbrv] ACCUMULO-2583 Change up the thrift and stub out a service to choose a random tserver to service replication work.
Date Fri, 09 May 2014 15:28:56 GMT
http://git-wip-us.apache.org/repos/asf/accumulo/blob/3e21a41d/core/src/main/java/org/apache/accumulo/core/replication/thrift/RemoteReplicationServicer.java
----------------------------------------------------------------------
diff --git a/core/src/main/java/org/apache/accumulo/core/replication/thrift/RemoteReplicationServicer.java b/core/src/main/java/org/apache/accumulo/core/replication/thrift/RemoteReplicationServicer.java
new file mode 100644
index 0000000..d828d7d
--- /dev/null
+++ b/core/src/main/java/org/apache/accumulo/core/replication/thrift/RemoteReplicationServicer.java
@@ -0,0 +1,1917 @@
+/*
+ * 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.
+ */
+/**
+ * Autogenerated by Thrift Compiler (0.9.0)
+ *
+ * DO NOT EDIT UNLESS YOU ARE SURE THAT YOU KNOW WHAT YOU ARE DOING
+ *  @generated
+ */
+package org.apache.accumulo.core.replication.thrift;
+
+import org.apache.thrift.scheme.IScheme;
+import org.apache.thrift.scheme.SchemeFactory;
+import org.apache.thrift.scheme.StandardScheme;
+
+import org.apache.thrift.scheme.TupleScheme;
+import org.apache.thrift.protocol.TTupleProtocol;
+import org.apache.thrift.protocol.TProtocolException;
+import org.apache.thrift.EncodingUtils;
+import org.apache.thrift.TException;
+import java.util.List;
+import java.util.ArrayList;
+import java.util.Map;
+import java.util.HashMap;
+import java.util.EnumMap;
+import java.util.Set;
+import java.util.HashSet;
+import java.util.EnumSet;
+import java.util.Collections;
+import java.util.BitSet;
+import java.nio.ByteBuffer;
+import java.util.Arrays;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+@SuppressWarnings("all") public class RemoteReplicationServicer {
+
+  public interface Iface {
+
+    public void replicateLog(int remoteTableId, WalEdits data) throws RemoteReplicationException, org.apache.thrift.TException;
+
+    public void replicateKeyValues(int remoteTableId, KeyValues data) throws RemoteReplicationException, org.apache.thrift.TException;
+
+  }
+
+  public interface AsyncIface {
+
+    public void replicateLog(int remoteTableId, WalEdits data, org.apache.thrift.async.AsyncMethodCallback<AsyncClient.replicateLog_call> resultHandler) throws org.apache.thrift.TException;
+
+    public void replicateKeyValues(int remoteTableId, KeyValues data, org.apache.thrift.async.AsyncMethodCallback<AsyncClient.replicateKeyValues_call> resultHandler) throws org.apache.thrift.TException;
+
+  }
+
+  public static class Client extends org.apache.thrift.TServiceClient implements Iface {
+    public static class Factory implements org.apache.thrift.TServiceClientFactory<Client> {
+      public Factory() {}
+      public Client getClient(org.apache.thrift.protocol.TProtocol prot) {
+        return new Client(prot);
+      }
+      public Client getClient(org.apache.thrift.protocol.TProtocol iprot, org.apache.thrift.protocol.TProtocol oprot) {
+        return new Client(iprot, oprot);
+      }
+    }
+
+    public Client(org.apache.thrift.protocol.TProtocol prot)
+    {
+      super(prot, prot);
+    }
+
+    public Client(org.apache.thrift.protocol.TProtocol iprot, org.apache.thrift.protocol.TProtocol oprot) {
+      super(iprot, oprot);
+    }
+
+    public void replicateLog(int remoteTableId, WalEdits data) throws RemoteReplicationException, org.apache.thrift.TException
+    {
+      send_replicateLog(remoteTableId, data);
+      recv_replicateLog();
+    }
+
+    public void send_replicateLog(int remoteTableId, WalEdits data) throws org.apache.thrift.TException
+    {
+      replicateLog_args args = new replicateLog_args();
+      args.setRemoteTableId(remoteTableId);
+      args.setData(data);
+      sendBase("replicateLog", args);
+    }
+
+    public void recv_replicateLog() throws RemoteReplicationException, org.apache.thrift.TException
+    {
+      replicateLog_result result = new replicateLog_result();
+      receiveBase(result, "replicateLog");
+      if (result.e != null) {
+        throw result.e;
+      }
+      return;
+    }
+
+    public void replicateKeyValues(int remoteTableId, KeyValues data) throws RemoteReplicationException, org.apache.thrift.TException
+    {
+      send_replicateKeyValues(remoteTableId, data);
+      recv_replicateKeyValues();
+    }
+
+    public void send_replicateKeyValues(int remoteTableId, KeyValues data) throws org.apache.thrift.TException
+    {
+      replicateKeyValues_args args = new replicateKeyValues_args();
+      args.setRemoteTableId(remoteTableId);
+      args.setData(data);
+      sendBase("replicateKeyValues", args);
+    }
+
+    public void recv_replicateKeyValues() throws RemoteReplicationException, org.apache.thrift.TException
+    {
+      replicateKeyValues_result result = new replicateKeyValues_result();
+      receiveBase(result, "replicateKeyValues");
+      if (result.e != null) {
+        throw result.e;
+      }
+      return;
+    }
+
+  }
+  public static class AsyncClient extends org.apache.thrift.async.TAsyncClient implements AsyncIface {
+    public static class Factory implements org.apache.thrift.async.TAsyncClientFactory<AsyncClient> {
+      private org.apache.thrift.async.TAsyncClientManager clientManager;
+      private org.apache.thrift.protocol.TProtocolFactory protocolFactory;
+      public Factory(org.apache.thrift.async.TAsyncClientManager clientManager, org.apache.thrift.protocol.TProtocolFactory protocolFactory) {
+        this.clientManager = clientManager;
+        this.protocolFactory = protocolFactory;
+      }
+      public AsyncClient getAsyncClient(org.apache.thrift.transport.TNonblockingTransport transport) {
+        return new AsyncClient(protocolFactory, clientManager, transport);
+      }
+    }
+
+    public AsyncClient(org.apache.thrift.protocol.TProtocolFactory protocolFactory, org.apache.thrift.async.TAsyncClientManager clientManager, org.apache.thrift.transport.TNonblockingTransport transport) {
+      super(protocolFactory, clientManager, transport);
+    }
+
+    public void replicateLog(int remoteTableId, WalEdits data, org.apache.thrift.async.AsyncMethodCallback<replicateLog_call> resultHandler) throws org.apache.thrift.TException {
+      checkReady();
+      replicateLog_call method_call = new replicateLog_call(remoteTableId, data, resultHandler, this, ___protocolFactory, ___transport);
+      this.___currentMethod = method_call;
+      ___manager.call(method_call);
+    }
+
+    public static class replicateLog_call extends org.apache.thrift.async.TAsyncMethodCall {
+      private int remoteTableId;
+      private WalEdits data;
+      public replicateLog_call(int remoteTableId, WalEdits data, org.apache.thrift.async.AsyncMethodCallback<replicateLog_call> resultHandler, org.apache.thrift.async.TAsyncClient client, org.apache.thrift.protocol.TProtocolFactory protocolFactory, org.apache.thrift.transport.TNonblockingTransport transport) throws org.apache.thrift.TException {
+        super(client, protocolFactory, transport, resultHandler, false);
+        this.remoteTableId = remoteTableId;
+        this.data = data;
+      }
+
+      public void write_args(org.apache.thrift.protocol.TProtocol prot) throws org.apache.thrift.TException {
+        prot.writeMessageBegin(new org.apache.thrift.protocol.TMessage("replicateLog", org.apache.thrift.protocol.TMessageType.CALL, 0));
+        replicateLog_args args = new replicateLog_args();
+        args.setRemoteTableId(remoteTableId);
+        args.setData(data);
+        args.write(prot);
+        prot.writeMessageEnd();
+      }
+
+      public void getResult() throws RemoteReplicationException, org.apache.thrift.TException {
+        if (getState() != org.apache.thrift.async.TAsyncMethodCall.State.RESPONSE_READ) {
+          throw new IllegalStateException("Method call not finished!");
+        }
+        org.apache.thrift.transport.TMemoryInputTransport memoryTransport = new org.apache.thrift.transport.TMemoryInputTransport(getFrameBuffer().array());
+        org.apache.thrift.protocol.TProtocol prot = client.getProtocolFactory().getProtocol(memoryTransport);
+        (new Client(prot)).recv_replicateLog();
+      }
+    }
+
+    public void replicateKeyValues(int remoteTableId, KeyValues data, org.apache.thrift.async.AsyncMethodCallback<replicateKeyValues_call> resultHandler) throws org.apache.thrift.TException {
+      checkReady();
+      replicateKeyValues_call method_call = new replicateKeyValues_call(remoteTableId, data, resultHandler, this, ___protocolFactory, ___transport);
+      this.___currentMethod = method_call;
+      ___manager.call(method_call);
+    }
+
+    public static class replicateKeyValues_call extends org.apache.thrift.async.TAsyncMethodCall {
+      private int remoteTableId;
+      private KeyValues data;
+      public replicateKeyValues_call(int remoteTableId, KeyValues data, org.apache.thrift.async.AsyncMethodCallback<replicateKeyValues_call> resultHandler, org.apache.thrift.async.TAsyncClient client, org.apache.thrift.protocol.TProtocolFactory protocolFactory, org.apache.thrift.transport.TNonblockingTransport transport) throws org.apache.thrift.TException {
+        super(client, protocolFactory, transport, resultHandler, false);
+        this.remoteTableId = remoteTableId;
+        this.data = data;
+      }
+
+      public void write_args(org.apache.thrift.protocol.TProtocol prot) throws org.apache.thrift.TException {
+        prot.writeMessageBegin(new org.apache.thrift.protocol.TMessage("replicateKeyValues", org.apache.thrift.protocol.TMessageType.CALL, 0));
+        replicateKeyValues_args args = new replicateKeyValues_args();
+        args.setRemoteTableId(remoteTableId);
+        args.setData(data);
+        args.write(prot);
+        prot.writeMessageEnd();
+      }
+
+      public void getResult() throws RemoteReplicationException, org.apache.thrift.TException {
+        if (getState() != org.apache.thrift.async.TAsyncMethodCall.State.RESPONSE_READ) {
+          throw new IllegalStateException("Method call not finished!");
+        }
+        org.apache.thrift.transport.TMemoryInputTransport memoryTransport = new org.apache.thrift.transport.TMemoryInputTransport(getFrameBuffer().array());
+        org.apache.thrift.protocol.TProtocol prot = client.getProtocolFactory().getProtocol(memoryTransport);
+        (new Client(prot)).recv_replicateKeyValues();
+      }
+    }
+
+  }
+
+  public static class Processor<I extends Iface> extends org.apache.thrift.TBaseProcessor<I> implements org.apache.thrift.TProcessor {
+    private static final Logger LOGGER = LoggerFactory.getLogger(Processor.class.getName());
+    public Processor(I iface) {
+      super(iface, getProcessMap(new HashMap<String, org.apache.thrift.ProcessFunction<I, ? extends org.apache.thrift.TBase>>()));
+    }
+
+    protected Processor(I iface, Map<String,  org.apache.thrift.ProcessFunction<I, ? extends  org.apache.thrift.TBase>> processMap) {
+      super(iface, getProcessMap(processMap));
+    }
+
+    private static <I extends Iface> Map<String,  org.apache.thrift.ProcessFunction<I, ? extends  org.apache.thrift.TBase>> getProcessMap(Map<String,  org.apache.thrift.ProcessFunction<I, ? extends  org.apache.thrift.TBase>> processMap) {
+      processMap.put("replicateLog", new replicateLog());
+      processMap.put("replicateKeyValues", new replicateKeyValues());
+      return processMap;
+    }
+
+    public static class replicateLog<I extends Iface> extends org.apache.thrift.ProcessFunction<I, replicateLog_args> {
+      public replicateLog() {
+        super("replicateLog");
+      }
+
+      public replicateLog_args getEmptyArgsInstance() {
+        return new replicateLog_args();
+      }
+
+      protected boolean isOneway() {
+        return false;
+      }
+
+      public replicateLog_result getResult(I iface, replicateLog_args args) throws org.apache.thrift.TException {
+        replicateLog_result result = new replicateLog_result();
+        try {
+          iface.replicateLog(args.remoteTableId, args.data);
+        } catch (RemoteReplicationException e) {
+          result.e = e;
+        }
+        return result;
+      }
+    }
+
+    public static class replicateKeyValues<I extends Iface> extends org.apache.thrift.ProcessFunction<I, replicateKeyValues_args> {
+      public replicateKeyValues() {
+        super("replicateKeyValues");
+      }
+
+      public replicateKeyValues_args getEmptyArgsInstance() {
+        return new replicateKeyValues_args();
+      }
+
+      protected boolean isOneway() {
+        return false;
+      }
+
+      public replicateKeyValues_result getResult(I iface, replicateKeyValues_args args) throws org.apache.thrift.TException {
+        replicateKeyValues_result result = new replicateKeyValues_result();
+        try {
+          iface.replicateKeyValues(args.remoteTableId, args.data);
+        } catch (RemoteReplicationException e) {
+          result.e = e;
+        }
+        return result;
+      }
+    }
+
+  }
+
+  public static class replicateLog_args implements org.apache.thrift.TBase<replicateLog_args, replicateLog_args._Fields>, java.io.Serializable, Cloneable   {
+    private static final org.apache.thrift.protocol.TStruct STRUCT_DESC = new org.apache.thrift.protocol.TStruct("replicateLog_args");
+
+    private static final org.apache.thrift.protocol.TField REMOTE_TABLE_ID_FIELD_DESC = new org.apache.thrift.protocol.TField("remoteTableId", org.apache.thrift.protocol.TType.I32, (short)1);
+    private static final org.apache.thrift.protocol.TField DATA_FIELD_DESC = new org.apache.thrift.protocol.TField("data", org.apache.thrift.protocol.TType.STRUCT, (short)2);
+
+    private static final Map<Class<? extends IScheme>, SchemeFactory> schemes = new HashMap<Class<? extends IScheme>, SchemeFactory>();
+    static {
+      schemes.put(StandardScheme.class, new replicateLog_argsStandardSchemeFactory());
+      schemes.put(TupleScheme.class, new replicateLog_argsTupleSchemeFactory());
+    }
+
+    public int remoteTableId; // required
+    public WalEdits data; // required
+
+    /** The set of fields this struct contains, along with convenience methods for finding and manipulating them. */
+    @SuppressWarnings("all") public enum _Fields implements org.apache.thrift.TFieldIdEnum {
+      REMOTE_TABLE_ID((short)1, "remoteTableId"),
+      DATA((short)2, "data");
+
+      private static final Map<String, _Fields> byName = new HashMap<String, _Fields>();
+
+      static {
+        for (_Fields field : EnumSet.allOf(_Fields.class)) {
+          byName.put(field.getFieldName(), field);
+        }
+      }
+
+      /**
+       * Find the _Fields constant that matches fieldId, or null if its not found.
+       */
+      public static _Fields findByThriftId(int fieldId) {
+        switch(fieldId) {
+          case 1: // REMOTE_TABLE_ID
+            return REMOTE_TABLE_ID;
+          case 2: // DATA
+            return DATA;
+          default:
+            return null;
+        }
+      }
+
+      /**
+       * Find the _Fields constant that matches fieldId, throwing an exception
+       * if it is not found.
+       */
+      public static _Fields findByThriftIdOrThrow(int fieldId) {
+        _Fields fields = findByThriftId(fieldId);
+        if (fields == null) throw new IllegalArgumentException("Field " + fieldId + " doesn't exist!");
+        return fields;
+      }
+
+      /**
+       * Find the _Fields constant that matches name, or null if its not found.
+       */
+      public static _Fields findByName(String name) {
+        return byName.get(name);
+      }
+
+      private final short _thriftId;
+      private final String _fieldName;
+
+      _Fields(short thriftId, String fieldName) {
+        _thriftId = thriftId;
+        _fieldName = fieldName;
+      }
+
+      public short getThriftFieldId() {
+        return _thriftId;
+      }
+
+      public String getFieldName() {
+        return _fieldName;
+      }
+    }
+
+    // isset id assignments
+    private static final int __REMOTETABLEID_ISSET_ID = 0;
+    private byte __isset_bitfield = 0;
+    public static final Map<_Fields, org.apache.thrift.meta_data.FieldMetaData> metaDataMap;
+    static {
+      Map<_Fields, org.apache.thrift.meta_data.FieldMetaData> tmpMap = new EnumMap<_Fields, org.apache.thrift.meta_data.FieldMetaData>(_Fields.class);
+      tmpMap.put(_Fields.REMOTE_TABLE_ID, new org.apache.thrift.meta_data.FieldMetaData("remoteTableId", org.apache.thrift.TFieldRequirementType.DEFAULT, 
+          new org.apache.thrift.meta_data.FieldValueMetaData(org.apache.thrift.protocol.TType.I32)));
+      tmpMap.put(_Fields.DATA, new org.apache.thrift.meta_data.FieldMetaData("data", org.apache.thrift.TFieldRequirementType.DEFAULT, 
+          new org.apache.thrift.meta_data.StructMetaData(org.apache.thrift.protocol.TType.STRUCT, WalEdits.class)));
+      metaDataMap = Collections.unmodifiableMap(tmpMap);
+      org.apache.thrift.meta_data.FieldMetaData.addStructMetaDataMap(replicateLog_args.class, metaDataMap);
+    }
+
+    public replicateLog_args() {
+    }
+
+    public replicateLog_args(
+      int remoteTableId,
+      WalEdits data)
+    {
+      this();
+      this.remoteTableId = remoteTableId;
+      setRemoteTableIdIsSet(true);
+      this.data = data;
+    }
+
+    /**
+     * Performs a deep copy on <i>other</i>.
+     */
+    public replicateLog_args(replicateLog_args other) {
+      __isset_bitfield = other.__isset_bitfield;
+      this.remoteTableId = other.remoteTableId;
+      if (other.isSetData()) {
+        this.data = new WalEdits(other.data);
+      }
+    }
+
+    public replicateLog_args deepCopy() {
+      return new replicateLog_args(this);
+    }
+
+    @Override
+    public void clear() {
+      setRemoteTableIdIsSet(false);
+      this.remoteTableId = 0;
+      this.data = null;
+    }
+
+    public int getRemoteTableId() {
+      return this.remoteTableId;
+    }
+
+    public replicateLog_args setRemoteTableId(int remoteTableId) {
+      this.remoteTableId = remoteTableId;
+      setRemoteTableIdIsSet(true);
+      return this;
+    }
+
+    public void unsetRemoteTableId() {
+      __isset_bitfield = EncodingUtils.clearBit(__isset_bitfield, __REMOTETABLEID_ISSET_ID);
+    }
+
+    /** Returns true if field remoteTableId is set (has been assigned a value) and false otherwise */
+    public boolean isSetRemoteTableId() {
+      return EncodingUtils.testBit(__isset_bitfield, __REMOTETABLEID_ISSET_ID);
+    }
+
+    public void setRemoteTableIdIsSet(boolean value) {
+      __isset_bitfield = EncodingUtils.setBit(__isset_bitfield, __REMOTETABLEID_ISSET_ID, value);
+    }
+
+    public WalEdits getData() {
+      return this.data;
+    }
+
+    public replicateLog_args setData(WalEdits data) {
+      this.data = data;
+      return this;
+    }
+
+    public void unsetData() {
+      this.data = null;
+    }
+
+    /** Returns true if field data is set (has been assigned a value) and false otherwise */
+    public boolean isSetData() {
+      return this.data != null;
+    }
+
+    public void setDataIsSet(boolean value) {
+      if (!value) {
+        this.data = null;
+      }
+    }
+
+    public void setFieldValue(_Fields field, Object value) {
+      switch (field) {
+      case REMOTE_TABLE_ID:
+        if (value == null) {
+          unsetRemoteTableId();
+        } else {
+          setRemoteTableId((Integer)value);
+        }
+        break;
+
+      case DATA:
+        if (value == null) {
+          unsetData();
+        } else {
+          setData((WalEdits)value);
+        }
+        break;
+
+      }
+    }
+
+    public Object getFieldValue(_Fields field) {
+      switch (field) {
+      case REMOTE_TABLE_ID:
+        return Integer.valueOf(getRemoteTableId());
+
+      case DATA:
+        return getData();
+
+      }
+      throw new IllegalStateException();
+    }
+
+    /** Returns true if field corresponding to fieldID is set (has been assigned a value) and false otherwise */
+    public boolean isSet(_Fields field) {
+      if (field == null) {
+        throw new IllegalArgumentException();
+      }
+
+      switch (field) {
+      case REMOTE_TABLE_ID:
+        return isSetRemoteTableId();
+      case DATA:
+        return isSetData();
+      }
+      throw new IllegalStateException();
+    }
+
+    @Override
+    public boolean equals(Object that) {
+      if (that == null)
+        return false;
+      if (that instanceof replicateLog_args)
+        return this.equals((replicateLog_args)that);
+      return false;
+    }
+
+    public boolean equals(replicateLog_args that) {
+      if (that == null)
+        return false;
+
+      boolean this_present_remoteTableId = true;
+      boolean that_present_remoteTableId = true;
+      if (this_present_remoteTableId || that_present_remoteTableId) {
+        if (!(this_present_remoteTableId && that_present_remoteTableId))
+          return false;
+        if (this.remoteTableId != that.remoteTableId)
+          return false;
+      }
+
+      boolean this_present_data = true && this.isSetData();
+      boolean that_present_data = true && that.isSetData();
+      if (this_present_data || that_present_data) {
+        if (!(this_present_data && that_present_data))
+          return false;
+        if (!this.data.equals(that.data))
+          return false;
+      }
+
+      return true;
+    }
+
+    @Override
+    public int hashCode() {
+      return 0;
+    }
+
+    public int compareTo(replicateLog_args other) {
+      if (!getClass().equals(other.getClass())) {
+        return getClass().getName().compareTo(other.getClass().getName());
+      }
+
+      int lastComparison = 0;
+      replicateLog_args typedOther = (replicateLog_args)other;
+
+      lastComparison = Boolean.valueOf(isSetRemoteTableId()).compareTo(typedOther.isSetRemoteTableId());
+      if (lastComparison != 0) {
+        return lastComparison;
+      }
+      if (isSetRemoteTableId()) {
+        lastComparison = org.apache.thrift.TBaseHelper.compareTo(this.remoteTableId, typedOther.remoteTableId);
+        if (lastComparison != 0) {
+          return lastComparison;
+        }
+      }
+      lastComparison = Boolean.valueOf(isSetData()).compareTo(typedOther.isSetData());
+      if (lastComparison != 0) {
+        return lastComparison;
+      }
+      if (isSetData()) {
+        lastComparison = org.apache.thrift.TBaseHelper.compareTo(this.data, typedOther.data);
+        if (lastComparison != 0) {
+          return lastComparison;
+        }
+      }
+      return 0;
+    }
+
+    public _Fields fieldForId(int fieldId) {
+      return _Fields.findByThriftId(fieldId);
+    }
+
+    public void read(org.apache.thrift.protocol.TProtocol iprot) throws org.apache.thrift.TException {
+      schemes.get(iprot.getScheme()).getScheme().read(iprot, this);
+    }
+
+    public void write(org.apache.thrift.protocol.TProtocol oprot) throws org.apache.thrift.TException {
+      schemes.get(oprot.getScheme()).getScheme().write(oprot, this);
+    }
+
+    @Override
+    public String toString() {
+      StringBuilder sb = new StringBuilder("replicateLog_args(");
+      boolean first = true;
+
+      sb.append("remoteTableId:");
+      sb.append(this.remoteTableId);
+      first = false;
+      if (!first) sb.append(", ");
+      sb.append("data:");
+      if (this.data == null) {
+        sb.append("null");
+      } else {
+        sb.append(this.data);
+      }
+      first = false;
+      sb.append(")");
+      return sb.toString();
+    }
+
+    public void validate() throws org.apache.thrift.TException {
+      // check for required fields
+      // check for sub-struct validity
+      if (data != null) {
+        data.validate();
+      }
+    }
+
+    private void writeObject(java.io.ObjectOutputStream out) throws java.io.IOException {
+      try {
+        write(new org.apache.thrift.protocol.TCompactProtocol(new org.apache.thrift.transport.TIOStreamTransport(out)));
+      } catch (org.apache.thrift.TException te) {
+        throw new java.io.IOException(te);
+      }
+    }
+
+    private void readObject(java.io.ObjectInputStream in) throws java.io.IOException, ClassNotFoundException {
+      try {
+        // it doesn't seem like you should have to do this, but java serialization is wacky, and doesn't call the default constructor.
+        __isset_bitfield = 0;
+        read(new org.apache.thrift.protocol.TCompactProtocol(new org.apache.thrift.transport.TIOStreamTransport(in)));
+      } catch (org.apache.thrift.TException te) {
+        throw new java.io.IOException(te);
+      }
+    }
+
+    private static class replicateLog_argsStandardSchemeFactory implements SchemeFactory {
+      public replicateLog_argsStandardScheme getScheme() {
+        return new replicateLog_argsStandardScheme();
+      }
+    }
+
+    private static class replicateLog_argsStandardScheme extends StandardScheme<replicateLog_args> {
+
+      public void read(org.apache.thrift.protocol.TProtocol iprot, replicateLog_args struct) throws org.apache.thrift.TException {
+        org.apache.thrift.protocol.TField schemeField;
+        iprot.readStructBegin();
+        while (true)
+        {
+          schemeField = iprot.readFieldBegin();
+          if (schemeField.type == org.apache.thrift.protocol.TType.STOP) { 
+            break;
+          }
+          switch (schemeField.id) {
+            case 1: // REMOTE_TABLE_ID
+              if (schemeField.type == org.apache.thrift.protocol.TType.I32) {
+                struct.remoteTableId = iprot.readI32();
+                struct.setRemoteTableIdIsSet(true);
+              } else { 
+                org.apache.thrift.protocol.TProtocolUtil.skip(iprot, schemeField.type);
+              }
+              break;
+            case 2: // DATA
+              if (schemeField.type == org.apache.thrift.protocol.TType.STRUCT) {
+                struct.data = new WalEdits();
+                struct.data.read(iprot);
+                struct.setDataIsSet(true);
+              } else { 
+                org.apache.thrift.protocol.TProtocolUtil.skip(iprot, schemeField.type);
+              }
+              break;
+            default:
+              org.apache.thrift.protocol.TProtocolUtil.skip(iprot, schemeField.type);
+          }
+          iprot.readFieldEnd();
+        }
+        iprot.readStructEnd();
+
+        // check for required fields of primitive type, which can't be checked in the validate method
+        struct.validate();
+      }
+
+      public void write(org.apache.thrift.protocol.TProtocol oprot, replicateLog_args struct) throws org.apache.thrift.TException {
+        struct.validate();
+
+        oprot.writeStructBegin(STRUCT_DESC);
+        oprot.writeFieldBegin(REMOTE_TABLE_ID_FIELD_DESC);
+        oprot.writeI32(struct.remoteTableId);
+        oprot.writeFieldEnd();
+        if (struct.data != null) {
+          oprot.writeFieldBegin(DATA_FIELD_DESC);
+          struct.data.write(oprot);
+          oprot.writeFieldEnd();
+        }
+        oprot.writeFieldStop();
+        oprot.writeStructEnd();
+      }
+
+    }
+
+    private static class replicateLog_argsTupleSchemeFactory implements SchemeFactory {
+      public replicateLog_argsTupleScheme getScheme() {
+        return new replicateLog_argsTupleScheme();
+      }
+    }
+
+    private static class replicateLog_argsTupleScheme extends TupleScheme<replicateLog_args> {
+
+      @Override
+      public void write(org.apache.thrift.protocol.TProtocol prot, replicateLog_args struct) throws org.apache.thrift.TException {
+        TTupleProtocol oprot = (TTupleProtocol) prot;
+        BitSet optionals = new BitSet();
+        if (struct.isSetRemoteTableId()) {
+          optionals.set(0);
+        }
+        if (struct.isSetData()) {
+          optionals.set(1);
+        }
+        oprot.writeBitSet(optionals, 2);
+        if (struct.isSetRemoteTableId()) {
+          oprot.writeI32(struct.remoteTableId);
+        }
+        if (struct.isSetData()) {
+          struct.data.write(oprot);
+        }
+      }
+
+      @Override
+      public void read(org.apache.thrift.protocol.TProtocol prot, replicateLog_args struct) throws org.apache.thrift.TException {
+        TTupleProtocol iprot = (TTupleProtocol) prot;
+        BitSet incoming = iprot.readBitSet(2);
+        if (incoming.get(0)) {
+          struct.remoteTableId = iprot.readI32();
+          struct.setRemoteTableIdIsSet(true);
+        }
+        if (incoming.get(1)) {
+          struct.data = new WalEdits();
+          struct.data.read(iprot);
+          struct.setDataIsSet(true);
+        }
+      }
+    }
+
+  }
+
+  public static class replicateLog_result implements org.apache.thrift.TBase<replicateLog_result, replicateLog_result._Fields>, java.io.Serializable, Cloneable   {
+    private static final org.apache.thrift.protocol.TStruct STRUCT_DESC = new org.apache.thrift.protocol.TStruct("replicateLog_result");
+
+    private static final org.apache.thrift.protocol.TField E_FIELD_DESC = new org.apache.thrift.protocol.TField("e", org.apache.thrift.protocol.TType.STRUCT, (short)1);
+
+    private static final Map<Class<? extends IScheme>, SchemeFactory> schemes = new HashMap<Class<? extends IScheme>, SchemeFactory>();
+    static {
+      schemes.put(StandardScheme.class, new replicateLog_resultStandardSchemeFactory());
+      schemes.put(TupleScheme.class, new replicateLog_resultTupleSchemeFactory());
+    }
+
+    public RemoteReplicationException e; // required
+
+    /** The set of fields this struct contains, along with convenience methods for finding and manipulating them. */
+    @SuppressWarnings("all") public enum _Fields implements org.apache.thrift.TFieldIdEnum {
+      E((short)1, "e");
+
+      private static final Map<String, _Fields> byName = new HashMap<String, _Fields>();
+
+      static {
+        for (_Fields field : EnumSet.allOf(_Fields.class)) {
+          byName.put(field.getFieldName(), field);
+        }
+      }
+
+      /**
+       * Find the _Fields constant that matches fieldId, or null if its not found.
+       */
+      public static _Fields findByThriftId(int fieldId) {
+        switch(fieldId) {
+          case 1: // E
+            return E;
+          default:
+            return null;
+        }
+      }
+
+      /**
+       * Find the _Fields constant that matches fieldId, throwing an exception
+       * if it is not found.
+       */
+      public static _Fields findByThriftIdOrThrow(int fieldId) {
+        _Fields fields = findByThriftId(fieldId);
+        if (fields == null) throw new IllegalArgumentException("Field " + fieldId + " doesn't exist!");
+        return fields;
+      }
+
+      /**
+       * Find the _Fields constant that matches name, or null if its not found.
+       */
+      public static _Fields findByName(String name) {
+        return byName.get(name);
+      }
+
+      private final short _thriftId;
+      private final String _fieldName;
+
+      _Fields(short thriftId, String fieldName) {
+        _thriftId = thriftId;
+        _fieldName = fieldName;
+      }
+
+      public short getThriftFieldId() {
+        return _thriftId;
+      }
+
+      public String getFieldName() {
+        return _fieldName;
+      }
+    }
+
+    // isset id assignments
+    public static final Map<_Fields, org.apache.thrift.meta_data.FieldMetaData> metaDataMap;
+    static {
+      Map<_Fields, org.apache.thrift.meta_data.FieldMetaData> tmpMap = new EnumMap<_Fields, org.apache.thrift.meta_data.FieldMetaData>(_Fields.class);
+      tmpMap.put(_Fields.E, new org.apache.thrift.meta_data.FieldMetaData("e", org.apache.thrift.TFieldRequirementType.DEFAULT, 
+          new org.apache.thrift.meta_data.FieldValueMetaData(org.apache.thrift.protocol.TType.STRUCT)));
+      metaDataMap = Collections.unmodifiableMap(tmpMap);
+      org.apache.thrift.meta_data.FieldMetaData.addStructMetaDataMap(replicateLog_result.class, metaDataMap);
+    }
+
+    public replicateLog_result() {
+    }
+
+    public replicateLog_result(
+      RemoteReplicationException e)
+    {
+      this();
+      this.e = e;
+    }
+
+    /**
+     * Performs a deep copy on <i>other</i>.
+     */
+    public replicateLog_result(replicateLog_result other) {
+      if (other.isSetE()) {
+        this.e = new RemoteReplicationException(other.e);
+      }
+    }
+
+    public replicateLog_result deepCopy() {
+      return new replicateLog_result(this);
+    }
+
+    @Override
+    public void clear() {
+      this.e = null;
+    }
+
+    public RemoteReplicationException getE() {
+      return this.e;
+    }
+
+    public replicateLog_result setE(RemoteReplicationException e) {
+      this.e = e;
+      return this;
+    }
+
+    public void unsetE() {
+      this.e = null;
+    }
+
+    /** Returns true if field e is set (has been assigned a value) and false otherwise */
+    public boolean isSetE() {
+      return this.e != null;
+    }
+
+    public void setEIsSet(boolean value) {
+      if (!value) {
+        this.e = null;
+      }
+    }
+
+    public void setFieldValue(_Fields field, Object value) {
+      switch (field) {
+      case E:
+        if (value == null) {
+          unsetE();
+        } else {
+          setE((RemoteReplicationException)value);
+        }
+        break;
+
+      }
+    }
+
+    public Object getFieldValue(_Fields field) {
+      switch (field) {
+      case E:
+        return getE();
+
+      }
+      throw new IllegalStateException();
+    }
+
+    /** Returns true if field corresponding to fieldID is set (has been assigned a value) and false otherwise */
+    public boolean isSet(_Fields field) {
+      if (field == null) {
+        throw new IllegalArgumentException();
+      }
+
+      switch (field) {
+      case E:
+        return isSetE();
+      }
+      throw new IllegalStateException();
+    }
+
+    @Override
+    public boolean equals(Object that) {
+      if (that == null)
+        return false;
+      if (that instanceof replicateLog_result)
+        return this.equals((replicateLog_result)that);
+      return false;
+    }
+
+    public boolean equals(replicateLog_result that) {
+      if (that == null)
+        return false;
+
+      boolean this_present_e = true && this.isSetE();
+      boolean that_present_e = true && that.isSetE();
+      if (this_present_e || that_present_e) {
+        if (!(this_present_e && that_present_e))
+          return false;
+        if (!this.e.equals(that.e))
+          return false;
+      }
+
+      return true;
+    }
+
+    @Override
+    public int hashCode() {
+      return 0;
+    }
+
+    public int compareTo(replicateLog_result other) {
+      if (!getClass().equals(other.getClass())) {
+        return getClass().getName().compareTo(other.getClass().getName());
+      }
+
+      int lastComparison = 0;
+      replicateLog_result typedOther = (replicateLog_result)other;
+
+      lastComparison = Boolean.valueOf(isSetE()).compareTo(typedOther.isSetE());
+      if (lastComparison != 0) {
+        return lastComparison;
+      }
+      if (isSetE()) {
+        lastComparison = org.apache.thrift.TBaseHelper.compareTo(this.e, typedOther.e);
+        if (lastComparison != 0) {
+          return lastComparison;
+        }
+      }
+      return 0;
+    }
+
+    public _Fields fieldForId(int fieldId) {
+      return _Fields.findByThriftId(fieldId);
+    }
+
+    public void read(org.apache.thrift.protocol.TProtocol iprot) throws org.apache.thrift.TException {
+      schemes.get(iprot.getScheme()).getScheme().read(iprot, this);
+    }
+
+    public void write(org.apache.thrift.protocol.TProtocol oprot) throws org.apache.thrift.TException {
+      schemes.get(oprot.getScheme()).getScheme().write(oprot, this);
+      }
+
+    @Override
+    public String toString() {
+      StringBuilder sb = new StringBuilder("replicateLog_result(");
+      boolean first = true;
+
+      sb.append("e:");
+      if (this.e == null) {
+        sb.append("null");
+      } else {
+        sb.append(this.e);
+      }
+      first = false;
+      sb.append(")");
+      return sb.toString();
+    }
+
+    public void validate() throws org.apache.thrift.TException {
+      // check for required fields
+      // check for sub-struct validity
+    }
+
+    private void writeObject(java.io.ObjectOutputStream out) throws java.io.IOException {
+      try {
+        write(new org.apache.thrift.protocol.TCompactProtocol(new org.apache.thrift.transport.TIOStreamTransport(out)));
+      } catch (org.apache.thrift.TException te) {
+        throw new java.io.IOException(te);
+      }
+    }
+
+    private void readObject(java.io.ObjectInputStream in) throws java.io.IOException, ClassNotFoundException {
+      try {
+        read(new org.apache.thrift.protocol.TCompactProtocol(new org.apache.thrift.transport.TIOStreamTransport(in)));
+      } catch (org.apache.thrift.TException te) {
+        throw new java.io.IOException(te);
+      }
+    }
+
+    private static class replicateLog_resultStandardSchemeFactory implements SchemeFactory {
+      public replicateLog_resultStandardScheme getScheme() {
+        return new replicateLog_resultStandardScheme();
+      }
+    }
+
+    private static class replicateLog_resultStandardScheme extends StandardScheme<replicateLog_result> {
+
+      public void read(org.apache.thrift.protocol.TProtocol iprot, replicateLog_result struct) throws org.apache.thrift.TException {
+        org.apache.thrift.protocol.TField schemeField;
+        iprot.readStructBegin();
+        while (true)
+        {
+          schemeField = iprot.readFieldBegin();
+          if (schemeField.type == org.apache.thrift.protocol.TType.STOP) { 
+            break;
+          }
+          switch (schemeField.id) {
+            case 1: // E
+              if (schemeField.type == org.apache.thrift.protocol.TType.STRUCT) {
+                struct.e = new RemoteReplicationException();
+                struct.e.read(iprot);
+                struct.setEIsSet(true);
+              } else { 
+                org.apache.thrift.protocol.TProtocolUtil.skip(iprot, schemeField.type);
+              }
+              break;
+            default:
+              org.apache.thrift.protocol.TProtocolUtil.skip(iprot, schemeField.type);
+          }
+          iprot.readFieldEnd();
+        }
+        iprot.readStructEnd();
+
+        // check for required fields of primitive type, which can't be checked in the validate method
+        struct.validate();
+      }
+
+      public void write(org.apache.thrift.protocol.TProtocol oprot, replicateLog_result struct) throws org.apache.thrift.TException {
+        struct.validate();
+
+        oprot.writeStructBegin(STRUCT_DESC);
+        if (struct.e != null) {
+          oprot.writeFieldBegin(E_FIELD_DESC);
+          struct.e.write(oprot);
+          oprot.writeFieldEnd();
+        }
+        oprot.writeFieldStop();
+        oprot.writeStructEnd();
+      }
+
+    }
+
+    private static class replicateLog_resultTupleSchemeFactory implements SchemeFactory {
+      public replicateLog_resultTupleScheme getScheme() {
+        return new replicateLog_resultTupleScheme();
+      }
+    }
+
+    private static class replicateLog_resultTupleScheme extends TupleScheme<replicateLog_result> {
+
+      @Override
+      public void write(org.apache.thrift.protocol.TProtocol prot, replicateLog_result struct) throws org.apache.thrift.TException {
+        TTupleProtocol oprot = (TTupleProtocol) prot;
+        BitSet optionals = new BitSet();
+        if (struct.isSetE()) {
+          optionals.set(0);
+        }
+        oprot.writeBitSet(optionals, 1);
+        if (struct.isSetE()) {
+          struct.e.write(oprot);
+        }
+      }
+
+      @Override
+      public void read(org.apache.thrift.protocol.TProtocol prot, replicateLog_result struct) throws org.apache.thrift.TException {
+        TTupleProtocol iprot = (TTupleProtocol) prot;
+        BitSet incoming = iprot.readBitSet(1);
+        if (incoming.get(0)) {
+          struct.e = new RemoteReplicationException();
+          struct.e.read(iprot);
+          struct.setEIsSet(true);
+        }
+      }
+    }
+
+  }
+
+  public static class replicateKeyValues_args implements org.apache.thrift.TBase<replicateKeyValues_args, replicateKeyValues_args._Fields>, java.io.Serializable, Cloneable   {
+    private static final org.apache.thrift.protocol.TStruct STRUCT_DESC = new org.apache.thrift.protocol.TStruct("replicateKeyValues_args");
+
+    private static final org.apache.thrift.protocol.TField REMOTE_TABLE_ID_FIELD_DESC = new org.apache.thrift.protocol.TField("remoteTableId", org.apache.thrift.protocol.TType.I32, (short)1);
+    private static final org.apache.thrift.protocol.TField DATA_FIELD_DESC = new org.apache.thrift.protocol.TField("data", org.apache.thrift.protocol.TType.STRUCT, (short)2);
+
+    private static final Map<Class<? extends IScheme>, SchemeFactory> schemes = new HashMap<Class<? extends IScheme>, SchemeFactory>();
+    static {
+      schemes.put(StandardScheme.class, new replicateKeyValues_argsStandardSchemeFactory());
+      schemes.put(TupleScheme.class, new replicateKeyValues_argsTupleSchemeFactory());
+    }
+
+    public int remoteTableId; // required
+    public KeyValues data; // required
+
+    /** The set of fields this struct contains, along with convenience methods for finding and manipulating them. */
+    @SuppressWarnings("all") public enum _Fields implements org.apache.thrift.TFieldIdEnum {
+      REMOTE_TABLE_ID((short)1, "remoteTableId"),
+      DATA((short)2, "data");
+
+      private static final Map<String, _Fields> byName = new HashMap<String, _Fields>();
+
+      static {
+        for (_Fields field : EnumSet.allOf(_Fields.class)) {
+          byName.put(field.getFieldName(), field);
+        }
+      }
+
+      /**
+       * Find the _Fields constant that matches fieldId, or null if its not found.
+       */
+      public static _Fields findByThriftId(int fieldId) {
+        switch(fieldId) {
+          case 1: // REMOTE_TABLE_ID
+            return REMOTE_TABLE_ID;
+          case 2: // DATA
+            return DATA;
+          default:
+            return null;
+        }
+      }
+
+      /**
+       * Find the _Fields constant that matches fieldId, throwing an exception
+       * if it is not found.
+       */
+      public static _Fields findByThriftIdOrThrow(int fieldId) {
+        _Fields fields = findByThriftId(fieldId);
+        if (fields == null) throw new IllegalArgumentException("Field " + fieldId + " doesn't exist!");
+        return fields;
+      }
+
+      /**
+       * Find the _Fields constant that matches name, or null if its not found.
+       */
+      public static _Fields findByName(String name) {
+        return byName.get(name);
+      }
+
+      private final short _thriftId;
+      private final String _fieldName;
+
+      _Fields(short thriftId, String fieldName) {
+        _thriftId = thriftId;
+        _fieldName = fieldName;
+      }
+
+      public short getThriftFieldId() {
+        return _thriftId;
+      }
+
+      public String getFieldName() {
+        return _fieldName;
+      }
+    }
+
+    // isset id assignments
+    private static final int __REMOTETABLEID_ISSET_ID = 0;
+    private byte __isset_bitfield = 0;
+    public static final Map<_Fields, org.apache.thrift.meta_data.FieldMetaData> metaDataMap;
+    static {
+      Map<_Fields, org.apache.thrift.meta_data.FieldMetaData> tmpMap = new EnumMap<_Fields, org.apache.thrift.meta_data.FieldMetaData>(_Fields.class);
+      tmpMap.put(_Fields.REMOTE_TABLE_ID, new org.apache.thrift.meta_data.FieldMetaData("remoteTableId", org.apache.thrift.TFieldRequirementType.DEFAULT, 
+          new org.apache.thrift.meta_data.FieldValueMetaData(org.apache.thrift.protocol.TType.I32)));
+      tmpMap.put(_Fields.DATA, new org.apache.thrift.meta_data.FieldMetaData("data", org.apache.thrift.TFieldRequirementType.DEFAULT, 
+          new org.apache.thrift.meta_data.StructMetaData(org.apache.thrift.protocol.TType.STRUCT, KeyValues.class)));
+      metaDataMap = Collections.unmodifiableMap(tmpMap);
+      org.apache.thrift.meta_data.FieldMetaData.addStructMetaDataMap(replicateKeyValues_args.class, metaDataMap);
+    }
+
+    public replicateKeyValues_args() {
+    }
+
+    public replicateKeyValues_args(
+      int remoteTableId,
+      KeyValues data)
+    {
+      this();
+      this.remoteTableId = remoteTableId;
+      setRemoteTableIdIsSet(true);
+      this.data = data;
+    }
+
+    /**
+     * Performs a deep copy on <i>other</i>.
+     */
+    public replicateKeyValues_args(replicateKeyValues_args other) {
+      __isset_bitfield = other.__isset_bitfield;
+      this.remoteTableId = other.remoteTableId;
+      if (other.isSetData()) {
+        this.data = new KeyValues(other.data);
+      }
+    }
+
+    public replicateKeyValues_args deepCopy() {
+      return new replicateKeyValues_args(this);
+    }
+
+    @Override
+    public void clear() {
+      setRemoteTableIdIsSet(false);
+      this.remoteTableId = 0;
+      this.data = null;
+    }
+
+    public int getRemoteTableId() {
+      return this.remoteTableId;
+    }
+
+    public replicateKeyValues_args setRemoteTableId(int remoteTableId) {
+      this.remoteTableId = remoteTableId;
+      setRemoteTableIdIsSet(true);
+      return this;
+    }
+
+    public void unsetRemoteTableId() {
+      __isset_bitfield = EncodingUtils.clearBit(__isset_bitfield, __REMOTETABLEID_ISSET_ID);
+    }
+
+    /** Returns true if field remoteTableId is set (has been assigned a value) and false otherwise */
+    public boolean isSetRemoteTableId() {
+      return EncodingUtils.testBit(__isset_bitfield, __REMOTETABLEID_ISSET_ID);
+    }
+
+    public void setRemoteTableIdIsSet(boolean value) {
+      __isset_bitfield = EncodingUtils.setBit(__isset_bitfield, __REMOTETABLEID_ISSET_ID, value);
+    }
+
+    public KeyValues getData() {
+      return this.data;
+    }
+
+    public replicateKeyValues_args setData(KeyValues data) {
+      this.data = data;
+      return this;
+    }
+
+    public void unsetData() {
+      this.data = null;
+    }
+
+    /** Returns true if field data is set (has been assigned a value) and false otherwise */
+    public boolean isSetData() {
+      return this.data != null;
+    }
+
+    public void setDataIsSet(boolean value) {
+      if (!value) {
+        this.data = null;
+      }
+    }
+
+    public void setFieldValue(_Fields field, Object value) {
+      switch (field) {
+      case REMOTE_TABLE_ID:
+        if (value == null) {
+          unsetRemoteTableId();
+        } else {
+          setRemoteTableId((Integer)value);
+        }
+        break;
+
+      case DATA:
+        if (value == null) {
+          unsetData();
+        } else {
+          setData((KeyValues)value);
+        }
+        break;
+
+      }
+    }
+
+    public Object getFieldValue(_Fields field) {
+      switch (field) {
+      case REMOTE_TABLE_ID:
+        return Integer.valueOf(getRemoteTableId());
+
+      case DATA:
+        return getData();
+
+      }
+      throw new IllegalStateException();
+    }
+
+    /** Returns true if field corresponding to fieldID is set (has been assigned a value) and false otherwise */
+    public boolean isSet(_Fields field) {
+      if (field == null) {
+        throw new IllegalArgumentException();
+      }
+
+      switch (field) {
+      case REMOTE_TABLE_ID:
+        return isSetRemoteTableId();
+      case DATA:
+        return isSetData();
+      }
+      throw new IllegalStateException();
+    }
+
+    @Override
+    public boolean equals(Object that) {
+      if (that == null)
+        return false;
+      if (that instanceof replicateKeyValues_args)
+        return this.equals((replicateKeyValues_args)that);
+      return false;
+    }
+
+    public boolean equals(replicateKeyValues_args that) {
+      if (that == null)
+        return false;
+
+      boolean this_present_remoteTableId = true;
+      boolean that_present_remoteTableId = true;
+      if (this_present_remoteTableId || that_present_remoteTableId) {
+        if (!(this_present_remoteTableId && that_present_remoteTableId))
+          return false;
+        if (this.remoteTableId != that.remoteTableId)
+          return false;
+      }
+
+      boolean this_present_data = true && this.isSetData();
+      boolean that_present_data = true && that.isSetData();
+      if (this_present_data || that_present_data) {
+        if (!(this_present_data && that_present_data))
+          return false;
+        if (!this.data.equals(that.data))
+          return false;
+      }
+
+      return true;
+    }
+
+    @Override
+    public int hashCode() {
+      return 0;
+    }
+
+    public int compareTo(replicateKeyValues_args other) {
+      if (!getClass().equals(other.getClass())) {
+        return getClass().getName().compareTo(other.getClass().getName());
+      }
+
+      int lastComparison = 0;
+      replicateKeyValues_args typedOther = (replicateKeyValues_args)other;
+
+      lastComparison = Boolean.valueOf(isSetRemoteTableId()).compareTo(typedOther.isSetRemoteTableId());
+      if (lastComparison != 0) {
+        return lastComparison;
+      }
+      if (isSetRemoteTableId()) {
+        lastComparison = org.apache.thrift.TBaseHelper.compareTo(this.remoteTableId, typedOther.remoteTableId);
+        if (lastComparison != 0) {
+          return lastComparison;
+        }
+      }
+      lastComparison = Boolean.valueOf(isSetData()).compareTo(typedOther.isSetData());
+      if (lastComparison != 0) {
+        return lastComparison;
+      }
+      if (isSetData()) {
+        lastComparison = org.apache.thrift.TBaseHelper.compareTo(this.data, typedOther.data);
+        if (lastComparison != 0) {
+          return lastComparison;
+        }
+      }
+      return 0;
+    }
+
+    public _Fields fieldForId(int fieldId) {
+      return _Fields.findByThriftId(fieldId);
+    }
+
+    public void read(org.apache.thrift.protocol.TProtocol iprot) throws org.apache.thrift.TException {
+      schemes.get(iprot.getScheme()).getScheme().read(iprot, this);
+    }
+
+    public void write(org.apache.thrift.protocol.TProtocol oprot) throws org.apache.thrift.TException {
+      schemes.get(oprot.getScheme()).getScheme().write(oprot, this);
+    }
+
+    @Override
+    public String toString() {
+      StringBuilder sb = new StringBuilder("replicateKeyValues_args(");
+      boolean first = true;
+
+      sb.append("remoteTableId:");
+      sb.append(this.remoteTableId);
+      first = false;
+      if (!first) sb.append(", ");
+      sb.append("data:");
+      if (this.data == null) {
+        sb.append("null");
+      } else {
+        sb.append(this.data);
+      }
+      first = false;
+      sb.append(")");
+      return sb.toString();
+    }
+
+    public void validate() throws org.apache.thrift.TException {
+      // check for required fields
+      // check for sub-struct validity
+      if (data != null) {
+        data.validate();
+      }
+    }
+
+    private void writeObject(java.io.ObjectOutputStream out) throws java.io.IOException {
+      try {
+        write(new org.apache.thrift.protocol.TCompactProtocol(new org.apache.thrift.transport.TIOStreamTransport(out)));
+      } catch (org.apache.thrift.TException te) {
+        throw new java.io.IOException(te);
+      }
+    }
+
+    private void readObject(java.io.ObjectInputStream in) throws java.io.IOException, ClassNotFoundException {
+      try {
+        // it doesn't seem like you should have to do this, but java serialization is wacky, and doesn't call the default constructor.
+        __isset_bitfield = 0;
+        read(new org.apache.thrift.protocol.TCompactProtocol(new org.apache.thrift.transport.TIOStreamTransport(in)));
+      } catch (org.apache.thrift.TException te) {
+        throw new java.io.IOException(te);
+      }
+    }
+
+    private static class replicateKeyValues_argsStandardSchemeFactory implements SchemeFactory {
+      public replicateKeyValues_argsStandardScheme getScheme() {
+        return new replicateKeyValues_argsStandardScheme();
+      }
+    }
+
+    private static class replicateKeyValues_argsStandardScheme extends StandardScheme<replicateKeyValues_args> {
+
+      public void read(org.apache.thrift.protocol.TProtocol iprot, replicateKeyValues_args struct) throws org.apache.thrift.TException {
+        org.apache.thrift.protocol.TField schemeField;
+        iprot.readStructBegin();
+        while (true)
+        {
+          schemeField = iprot.readFieldBegin();
+          if (schemeField.type == org.apache.thrift.protocol.TType.STOP) { 
+            break;
+          }
+          switch (schemeField.id) {
+            case 1: // REMOTE_TABLE_ID
+              if (schemeField.type == org.apache.thrift.protocol.TType.I32) {
+                struct.remoteTableId = iprot.readI32();
+                struct.setRemoteTableIdIsSet(true);
+              } else { 
+                org.apache.thrift.protocol.TProtocolUtil.skip(iprot, schemeField.type);
+              }
+              break;
+            case 2: // DATA
+              if (schemeField.type == org.apache.thrift.protocol.TType.STRUCT) {
+                struct.data = new KeyValues();
+                struct.data.read(iprot);
+                struct.setDataIsSet(true);
+              } else { 
+                org.apache.thrift.protocol.TProtocolUtil.skip(iprot, schemeField.type);
+              }
+              break;
+            default:
+              org.apache.thrift.protocol.TProtocolUtil.skip(iprot, schemeField.type);
+          }
+          iprot.readFieldEnd();
+        }
+        iprot.readStructEnd();
+
+        // check for required fields of primitive type, which can't be checked in the validate method
+        struct.validate();
+      }
+
+      public void write(org.apache.thrift.protocol.TProtocol oprot, replicateKeyValues_args struct) throws org.apache.thrift.TException {
+        struct.validate();
+
+        oprot.writeStructBegin(STRUCT_DESC);
+        oprot.writeFieldBegin(REMOTE_TABLE_ID_FIELD_DESC);
+        oprot.writeI32(struct.remoteTableId);
+        oprot.writeFieldEnd();
+        if (struct.data != null) {
+          oprot.writeFieldBegin(DATA_FIELD_DESC);
+          struct.data.write(oprot);
+          oprot.writeFieldEnd();
+        }
+        oprot.writeFieldStop();
+        oprot.writeStructEnd();
+      }
+
+    }
+
+    private static class replicateKeyValues_argsTupleSchemeFactory implements SchemeFactory {
+      public replicateKeyValues_argsTupleScheme getScheme() {
+        return new replicateKeyValues_argsTupleScheme();
+      }
+    }
+
+    private static class replicateKeyValues_argsTupleScheme extends TupleScheme<replicateKeyValues_args> {
+
+      @Override
+      public void write(org.apache.thrift.protocol.TProtocol prot, replicateKeyValues_args struct) throws org.apache.thrift.TException {
+        TTupleProtocol oprot = (TTupleProtocol) prot;
+        BitSet optionals = new BitSet();
+        if (struct.isSetRemoteTableId()) {
+          optionals.set(0);
+        }
+        if (struct.isSetData()) {
+          optionals.set(1);
+        }
+        oprot.writeBitSet(optionals, 2);
+        if (struct.isSetRemoteTableId()) {
+          oprot.writeI32(struct.remoteTableId);
+        }
+        if (struct.isSetData()) {
+          struct.data.write(oprot);
+        }
+      }
+
+      @Override
+      public void read(org.apache.thrift.protocol.TProtocol prot, replicateKeyValues_args struct) throws org.apache.thrift.TException {
+        TTupleProtocol iprot = (TTupleProtocol) prot;
+        BitSet incoming = iprot.readBitSet(2);
+        if (incoming.get(0)) {
+          struct.remoteTableId = iprot.readI32();
+          struct.setRemoteTableIdIsSet(true);
+        }
+        if (incoming.get(1)) {
+          struct.data = new KeyValues();
+          struct.data.read(iprot);
+          struct.setDataIsSet(true);
+        }
+      }
+    }
+
+  }
+
+  public static class replicateKeyValues_result implements org.apache.thrift.TBase<replicateKeyValues_result, replicateKeyValues_result._Fields>, java.io.Serializable, Cloneable   {
+    private static final org.apache.thrift.protocol.TStruct STRUCT_DESC = new org.apache.thrift.protocol.TStruct("replicateKeyValues_result");
+
+    private static final org.apache.thrift.protocol.TField E_FIELD_DESC = new org.apache.thrift.protocol.TField("e", org.apache.thrift.protocol.TType.STRUCT, (short)1);
+
+    private static final Map<Class<? extends IScheme>, SchemeFactory> schemes = new HashMap<Class<? extends IScheme>, SchemeFactory>();
+    static {
+      schemes.put(StandardScheme.class, new replicateKeyValues_resultStandardSchemeFactory());
+      schemes.put(TupleScheme.class, new replicateKeyValues_resultTupleSchemeFactory());
+    }
+
+    public RemoteReplicationException e; // required
+
+    /** The set of fields this struct contains, along with convenience methods for finding and manipulating them. */
+    @SuppressWarnings("all") public enum _Fields implements org.apache.thrift.TFieldIdEnum {
+      E((short)1, "e");
+
+      private static final Map<String, _Fields> byName = new HashMap<String, _Fields>();
+
+      static {
+        for (_Fields field : EnumSet.allOf(_Fields.class)) {
+          byName.put(field.getFieldName(), field);
+        }
+      }
+
+      /**
+       * Find the _Fields constant that matches fieldId, or null if its not found.
+       */
+      public static _Fields findByThriftId(int fieldId) {
+        switch(fieldId) {
+          case 1: // E
+            return E;
+          default:
+            return null;
+        }
+      }
+
+      /**
+       * Find the _Fields constant that matches fieldId, throwing an exception
+       * if it is not found.
+       */
+      public static _Fields findByThriftIdOrThrow(int fieldId) {
+        _Fields fields = findByThriftId(fieldId);
+        if (fields == null) throw new IllegalArgumentException("Field " + fieldId + " doesn't exist!");
+        return fields;
+      }
+
+      /**
+       * Find the _Fields constant that matches name, or null if its not found.
+       */
+      public static _Fields findByName(String name) {
+        return byName.get(name);
+      }
+
+      private final short _thriftId;
+      private final String _fieldName;
+
+      _Fields(short thriftId, String fieldName) {
+        _thriftId = thriftId;
+        _fieldName = fieldName;
+      }
+
+      public short getThriftFieldId() {
+        return _thriftId;
+      }
+
+      public String getFieldName() {
+        return _fieldName;
+      }
+    }
+
+    // isset id assignments
+    public static final Map<_Fields, org.apache.thrift.meta_data.FieldMetaData> metaDataMap;
+    static {
+      Map<_Fields, org.apache.thrift.meta_data.FieldMetaData> tmpMap = new EnumMap<_Fields, org.apache.thrift.meta_data.FieldMetaData>(_Fields.class);
+      tmpMap.put(_Fields.E, new org.apache.thrift.meta_data.FieldMetaData("e", org.apache.thrift.TFieldRequirementType.DEFAULT, 
+          new org.apache.thrift.meta_data.FieldValueMetaData(org.apache.thrift.protocol.TType.STRUCT)));
+      metaDataMap = Collections.unmodifiableMap(tmpMap);
+      org.apache.thrift.meta_data.FieldMetaData.addStructMetaDataMap(replicateKeyValues_result.class, metaDataMap);
+    }
+
+    public replicateKeyValues_result() {
+    }
+
+    public replicateKeyValues_result(
+      RemoteReplicationException e)
+    {
+      this();
+      this.e = e;
+    }
+
+    /**
+     * Performs a deep copy on <i>other</i>.
+     */
+    public replicateKeyValues_result(replicateKeyValues_result other) {
+      if (other.isSetE()) {
+        this.e = new RemoteReplicationException(other.e);
+      }
+    }
+
+    public replicateKeyValues_result deepCopy() {
+      return new replicateKeyValues_result(this);
+    }
+
+    @Override
+    public void clear() {
+      this.e = null;
+    }
+
+    public RemoteReplicationException getE() {
+      return this.e;
+    }
+
+    public replicateKeyValues_result setE(RemoteReplicationException e) {
+      this.e = e;
+      return this;
+    }
+
+    public void unsetE() {
+      this.e = null;
+    }
+
+    /** Returns true if field e is set (has been assigned a value) and false otherwise */
+    public boolean isSetE() {
+      return this.e != null;
+    }
+
+    public void setEIsSet(boolean value) {
+      if (!value) {
+        this.e = null;
+      }
+    }
+
+    public void setFieldValue(_Fields field, Object value) {
+      switch (field) {
+      case E:
+        if (value == null) {
+          unsetE();
+        } else {
+          setE((RemoteReplicationException)value);
+        }
+        break;
+
+      }
+    }
+
+    public Object getFieldValue(_Fields field) {
+      switch (field) {
+      case E:
+        return getE();
+
+      }
+      throw new IllegalStateException();
+    }
+
+    /** Returns true if field corresponding to fieldID is set (has been assigned a value) and false otherwise */
+    public boolean isSet(_Fields field) {
+      if (field == null) {
+        throw new IllegalArgumentException();
+      }
+
+      switch (field) {
+      case E:
+        return isSetE();
+      }
+      throw new IllegalStateException();
+    }
+
+    @Override
+    public boolean equals(Object that) {
+      if (that == null)
+        return false;
+      if (that instanceof replicateKeyValues_result)
+        return this.equals((replicateKeyValues_result)that);
+      return false;
+    }
+
+    public boolean equals(replicateKeyValues_result that) {
+      if (that == null)
+        return false;
+
+      boolean this_present_e = true && this.isSetE();
+      boolean that_present_e = true && that.isSetE();
+      if (this_present_e || that_present_e) {
+        if (!(this_present_e && that_present_e))
+          return false;
+        if (!this.e.equals(that.e))
+          return false;
+      }
+
+      return true;
+    }
+
+    @Override
+    public int hashCode() {
+      return 0;
+    }
+
+    public int compareTo(replicateKeyValues_result other) {
+      if (!getClass().equals(other.getClass())) {
+        return getClass().getName().compareTo(other.getClass().getName());
+      }
+
+      int lastComparison = 0;
+      replicateKeyValues_result typedOther = (replicateKeyValues_result)other;
+
+      lastComparison = Boolean.valueOf(isSetE()).compareTo(typedOther.isSetE());
+      if (lastComparison != 0) {
+        return lastComparison;
+      }
+      if (isSetE()) {
+        lastComparison = org.apache.thrift.TBaseHelper.compareTo(this.e, typedOther.e);
+        if (lastComparison != 0) {
+          return lastComparison;
+        }
+      }
+      return 0;
+    }
+
+    public _Fields fieldForId(int fieldId) {
+      return _Fields.findByThriftId(fieldId);
+    }
+
+    public void read(org.apache.thrift.protocol.TProtocol iprot) throws org.apache.thrift.TException {
+      schemes.get(iprot.getScheme()).getScheme().read(iprot, this);
+    }
+
+    public void write(org.apache.thrift.protocol.TProtocol oprot) throws org.apache.thrift.TException {
+      schemes.get(oprot.getScheme()).getScheme().write(oprot, this);
+      }
+
+    @Override
+    public String toString() {
+      StringBuilder sb = new StringBuilder("replicateKeyValues_result(");
+      boolean first = true;
+
+      sb.append("e:");
+      if (this.e == null) {
+        sb.append("null");
+      } else {
+        sb.append(this.e);
+      }
+      first = false;
+      sb.append(")");
+      return sb.toString();
+    }
+
+    public void validate() throws org.apache.thrift.TException {
+      // check for required fields
+      // check for sub-struct validity
+    }
+
+    private void writeObject(java.io.ObjectOutputStream out) throws java.io.IOException {
+      try {
+        write(new org.apache.thrift.protocol.TCompactProtocol(new org.apache.thrift.transport.TIOStreamTransport(out)));
+      } catch (org.apache.thrift.TException te) {
+        throw new java.io.IOException(te);
+      }
+    }
+
+    private void readObject(java.io.ObjectInputStream in) throws java.io.IOException, ClassNotFoundException {
+      try {
+        read(new org.apache.thrift.protocol.TCompactProtocol(new org.apache.thrift.transport.TIOStreamTransport(in)));
+      } catch (org.apache.thrift.TException te) {
+        throw new java.io.IOException(te);
+      }
+    }
+
+    private static class replicateKeyValues_resultStandardSchemeFactory implements SchemeFactory {
+      public replicateKeyValues_resultStandardScheme getScheme() {
+        return new replicateKeyValues_resultStandardScheme();
+      }
+    }
+
+    private static class replicateKeyValues_resultStandardScheme extends StandardScheme<replicateKeyValues_result> {
+
+      public void read(org.apache.thrift.protocol.TProtocol iprot, replicateKeyValues_result struct) throws org.apache.thrift.TException {
+        org.apache.thrift.protocol.TField schemeField;
+        iprot.readStructBegin();
+        while (true)
+        {
+          schemeField = iprot.readFieldBegin();
+          if (schemeField.type == org.apache.thrift.protocol.TType.STOP) { 
+            break;
+          }
+          switch (schemeField.id) {
+            case 1: // E
+              if (schemeField.type == org.apache.thrift.protocol.TType.STRUCT) {
+                struct.e = new RemoteReplicationException();
+                struct.e.read(iprot);
+                struct.setEIsSet(true);
+              } else { 
+                org.apache.thrift.protocol.TProtocolUtil.skip(iprot, schemeField.type);
+              }
+              break;
+            default:
+              org.apache.thrift.protocol.TProtocolUtil.skip(iprot, schemeField.type);
+          }
+          iprot.readFieldEnd();
+        }
+        iprot.readStructEnd();
+
+        // check for required fields of primitive type, which can't be checked in the validate method
+        struct.validate();
+      }
+
+      public void write(org.apache.thrift.protocol.TProtocol oprot, replicateKeyValues_result struct) throws org.apache.thrift.TException {
+        struct.validate();
+
+        oprot.writeStructBegin(STRUCT_DESC);
+        if (struct.e != null) {
+          oprot.writeFieldBegin(E_FIELD_DESC);
+          struct.e.write(oprot);
+          oprot.writeFieldEnd();
+        }
+        oprot.writeFieldStop();
+        oprot.writeStructEnd();
+      }
+
+    }
+
+    private static class replicateKeyValues_resultTupleSchemeFactory implements SchemeFactory {
+      public replicateKeyValues_resultTupleScheme getScheme() {
+        return new replicateKeyValues_resultTupleScheme();
+      }
+    }
+
+    private static class replicateKeyValues_resultTupleScheme extends TupleScheme<replicateKeyValues_result> {
+
+      @Override
+      public void write(org.apache.thrift.protocol.TProtocol prot, replicateKeyValues_result struct) throws org.apache.thrift.TException {
+        TTupleProtocol oprot = (TTupleProtocol) prot;
+        BitSet optionals = new BitSet();
+        if (struct.isSetE()) {
+          optionals.set(0);
+        }
+        oprot.writeBitSet(optionals, 1);
+        if (struct.isSetE()) {
+          struct.e.write(oprot);
+        }
+      }
+
+      @Override
+      public void read(org.apache.thrift.protocol.TProtocol prot, replicateKeyValues_result struct) throws org.apache.thrift.TException {
+        TTupleProtocol iprot = (TTupleProtocol) prot;
+        BitSet incoming = iprot.readBitSet(1);
+        if (incoming.get(0)) {
+          struct.e = new RemoteReplicationException();
+          struct.e.read(iprot);
+          struct.setEIsSet(true);
+        }
+      }
+    }
+
+  }
+
+}

http://git-wip-us.apache.org/repos/asf/accumulo/blob/3e21a41d/core/src/main/thrift/replication.thrift
----------------------------------------------------------------------
diff --git a/core/src/main/thrift/replication.thrift b/core/src/main/thrift/replication.thrift
index a71d200..481daa9 100644
--- a/core/src/main/thrift/replication.thrift
+++ b/core/src/main/thrift/replication.thrift
@@ -28,12 +28,21 @@ struct KeyValues {
     1:list<data.TKeyValue> keyValues
 }
 
+exception NoServersAvailableException {
+	1:i32 code,
+	2:string reason
+}
+
 exception RemoteReplicationException {
     1:i32 code,
     2:string reason
 }
 
-service RemoteReplication {
+service RemoteReplicationCoordinator {
+	string getServicerAddress(1:i32 remoteTableId) throws (1:NoServersAvailableException e),
+}
+
+service RemoteReplicationServicer {
     void replicateLog(1:i32 remoteTableId, 2:WalEdits data) throws (1:RemoteReplicationException e),
     void replicateKeyValues(1:i32 remoteTableId, 2:KeyValues data) throws (1:RemoteReplicationException e)
 }
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/accumulo/blob/3e21a41d/server/master/src/main/java/org/apache/accumulo/master/Master.java
----------------------------------------------------------------------
diff --git a/server/master/src/main/java/org/apache/accumulo/master/Master.java b/server/master/src/main/java/org/apache/accumulo/master/Master.java
index c4408e2..db7507e 100644
--- a/server/master/src/main/java/org/apache/accumulo/master/Master.java
+++ b/server/master/src/main/java/org/apache/accumulo/master/Master.java
@@ -967,6 +967,8 @@ public class Master implements LiveTServerSet.Listener, TableObserver, CurrentSt
       throw new IOException(e);
     }
 
+    
+
     Processor<Iface> processor = new Processor<Iface>(TraceWrap.service(new MasterClientServiceHandler(this)));
     ServerAddress sa = TServerUtils.startServer(getSystemConfiguration(), hostname, Property.MASTER_CLIENTPORT, processor, "Master",
         "Master Client Service Handler", null, Property.MASTER_MINTHREADS, Property.MASTER_THREADCHECK, Property.GENERAL_MAX_MESSAGE_SIZE);

http://git-wip-us.apache.org/repos/asf/accumulo/blob/3e21a41d/server/master/src/main/java/org/apache/accumulo/master/replication/MasterReplicationCoordinator.java
----------------------------------------------------------------------
diff --git a/server/master/src/main/java/org/apache/accumulo/master/replication/MasterReplicationCoordinator.java b/server/master/src/main/java/org/apache/accumulo/master/replication/MasterReplicationCoordinator.java
new file mode 100644
index 0000000..0497892
--- /dev/null
+++ b/server/master/src/main/java/org/apache/accumulo/master/replication/MasterReplicationCoordinator.java
@@ -0,0 +1,76 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.accumulo.master.replication;
+
+import java.util.Iterator;
+import java.util.Random;
+import java.util.Set;
+
+import org.apache.accumulo.core.conf.AccumuloConfiguration;
+import org.apache.accumulo.core.conf.Property;
+import org.apache.accumulo.core.replication.thrift.NoServersAvailableException;
+import org.apache.accumulo.core.replication.thrift.RemoteReplicationCoordinator;
+import org.apache.accumulo.master.Master;
+import org.apache.accumulo.server.master.state.TServerInstance;
+import org.apache.thrift.TException;
+
+import com.google.common.base.Preconditions;
+
+/**
+ * Choose a tserver to service a replication task
+ */
+public class MasterReplicationCoordinator implements RemoteReplicationCoordinator.Iface {
+
+  public static enum NoServersAvailable {
+    NO_ONLINE_SERVERS
+  }
+
+  private final Master master;
+  private final AccumuloConfiguration conf;
+  private final Random rand;
+  private final int port;
+
+  public MasterReplicationCoordinator(Master master, AccumuloConfiguration conf) {
+    this.master = master;
+    this.conf = conf;
+    this.port = conf.getPort(Property.REPLICATION_RECEIPT_SERVICE_PORT);
+    this.rand = new Random(358923462l);
+  }
+
+  @Override
+  public String getServicerAddress(int remoteTableId) throws NoServersAvailableException, TException {
+    Set<TServerInstance> tservers = master.onlineTabletServers();
+    if (tservers.isEmpty()) {
+      throw new NoServersAvailableException(NoServersAvailable.NO_ONLINE_SERVERS.ordinal(), "No tservers are online");
+    }
+
+    TServerInstance tserver = getRandomTServer(tservers, rand.nextInt(tservers.size()));
+    return tserver.host() + ":" + port;
+  }
+
+  protected TServerInstance getRandomTServer(Set<TServerInstance> tservers, int offset) {
+    Preconditions.checkArgument(tservers.size() > offset, "Must provide an offset less than the size of the set");
+    Iterator<TServerInstance> iter = tservers.iterator();
+    while (offset > 0) {
+      iter.next();
+      offset--;
+    }
+
+    return iter.next();
+  }
+
+}

http://git-wip-us.apache.org/repos/asf/accumulo/blob/3e21a41d/server/master/src/test/java/org/apache/accumulo/master/replication/MasterReplicationCoordinatorTest.java
----------------------------------------------------------------------
diff --git a/server/master/src/test/java/org/apache/accumulo/master/replication/MasterReplicationCoordinatorTest.java b/server/master/src/test/java/org/apache/accumulo/master/replication/MasterReplicationCoordinatorTest.java
new file mode 100644
index 0000000..9cb196c
--- /dev/null
+++ b/server/master/src/test/java/org/apache/accumulo/master/replication/MasterReplicationCoordinatorTest.java
@@ -0,0 +1,70 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.accumulo.master.replication;
+
+import java.util.Collections;
+import java.util.TreeSet;
+
+import org.apache.accumulo.core.conf.AccumuloConfiguration;
+import org.apache.accumulo.master.Master;
+import org.apache.accumulo.server.master.state.TServerInstance;
+import org.easymock.EasyMock;
+import org.junit.Assert;
+import org.junit.Test;
+
+import com.google.common.net.HostAndPort;
+
+/**
+ * 
+ */
+public class MasterReplicationCoordinatorTest {
+
+  @Test
+  public void randomServer() {
+    Master master = EasyMock.createMock(Master.class);
+    AccumuloConfiguration conf = EasyMock.createMock(AccumuloConfiguration.class); 
+    MasterReplicationCoordinator coordinator = new MasterReplicationCoordinator(master, conf);
+    TServerInstance inst1 = new TServerInstance(HostAndPort.fromParts("host1", 1234), "session");
+
+    Assert.assertEquals(inst1, coordinator.getRandomTServer(Collections.singleton(inst1), 0));
+  }
+
+  @Test(expected = IllegalArgumentException.class)
+  public void invalidOffset() {
+    Master master = EasyMock.createMock(Master.class);
+    AccumuloConfiguration conf = EasyMock.createMock(AccumuloConfiguration.class); 
+    MasterReplicationCoordinator coordinator = new MasterReplicationCoordinator(master, conf);
+    TServerInstance inst1 = new TServerInstance(HostAndPort.fromParts("host1", 1234), "session");
+
+    Assert.assertEquals(inst1, coordinator.getRandomTServer(Collections.singleton(inst1), 1));
+  }
+
+  @Test
+  public void randomServerFromMany() {
+    Master master = EasyMock.createMock(Master.class);
+    AccumuloConfiguration conf = EasyMock.createMock(AccumuloConfiguration.class); 
+    MasterReplicationCoordinator coordinator = new MasterReplicationCoordinator(master, conf);
+    TreeSet<TServerInstance> instances = new TreeSet<>();
+    TServerInstance inst1 = new TServerInstance(HostAndPort.fromParts("host1", 1234), "session");
+    instances.add(inst1);
+    TServerInstance inst2 = new TServerInstance(HostAndPort.fromParts("host2", 1234), "session");
+    instances.add(inst2);
+
+    Assert.assertEquals(inst1, coordinator.getRandomTServer(instances, 0));
+    Assert.assertEquals(inst2, coordinator.getRandomTServer(instances, 1));
+  }
+}


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