HBASE-16264 Figure how to deal with endpoints and shaded pb Shade our 
protobufs. Do it in a manner that makes it so we can still have in our API 
references to com.google.protobuf (and in REST). The c.g.p in API is for 
Coprocessor Endpoints (CPEP)

        This patch is Tactic #4 from Shading Doc attached to the referenced 
issue.
        Figuring an appoach took a while because we have Coprocessor Endpoints
        mixed in with the core of HBase that are tough to untangle (FIX).

        Tactic #4 (the fourth attempt at addressing this issue) is COPY all but
        the CPEP .proto files currently in hbase-protocol to a new module named
        hbase-protocol-shaded. Generate .protos again in the new location and
        then relocate/shade the generated files. Let CPEPs keep on with the
        old references at com.google.protobuf.* and
        org.apache.hadoop.hbase.protobuf.* but change the hbase core so all
        instead refer to the relocated files in their new location at
        org.apache.hadoop.hbase.shaded.com.google.protobuf.*.

        Let the new module also shade protobufs themselves and change hbase
        core to pick up this shaded protobuf rather than directly reference
        com.google.protobuf.

        This approach allows us to explicitly refer to either the shaded or
        non-shaded version of a protobuf class in any particular context (though
        usually context dictates one or the other). Core runs on shaded 
protobuf.
        CPEPs continue to use whatever is on the classpath with
        com.google.protobuf.* which is pb2.5.0 for the near future at least.

        See above cited doc for follow-ons and downsides. In short, IDEs will 
complain
        about not being able to find the shaded protobufs since shading happens 
at package
        time; will fix by checking in all generated classes and relocated 
protobuf in
        a follow-on. Also, CPEPs currently suffer an extra-copy as marshalled 
from
        non-shaded to shaded. To fix. Finally, our .protos are duplicated; once
        shaded, and once not. Pain, but how else to reveal our protos to CPEPs 
or
        C++ client that wants to talk with HBase AND shade protobuf.

        Details:

        Add a new hbase-protocol-shaded module. It is a copy of hbase-protocol
i       with all relocated offset from o.a.h.h. to o.a.h.h.shaded. The new 
module
        also includes the relocated pb. It does not include CPEPs. They stay in
        their old location.

        Add another module hbase-endpoint which has in it all the endpoints
        that ship as part of hbase -- at least the ones that are not
        entangled with core such as AccessControl and Auth. Move all protos
        for these CPEPs here as well as their unit tests (mostly moving a
        bunch of stuff out of hbase-server module)

        Much of the change looks like this:

             -import org.apache.hadoop.hbase.protobuf.ProtobufUtil;
             -import org.apache.hadoop.hbase.protobuf.generated.ClusterIdProtos;
             +import org.apache.hadoop.hbase.protobuf.shaded.ProtobufUtil;
             +import 
org.apache.hadoop.hbase.shaded.protobuf.generated.ClusterIdProtos;

        In HTable and in HBaseAdmin, regularize the way Callables are used and 
also hide
        protobuf usage as much as possible moving it up into Callable super 
classes or out
        to utility classes. Still TODO is adding in of retries, etc., but can 
wait on
        procedure which will redo all this.

        Also in HTable and HBaseAdmin as well as in HRegionServer and Server, 
be explicit
        when using non-shaded protobuf. Do the full-path so it is clear. This 
is around
        endpoint coprocessors registration of services and execution of CPEP 
methods.

        Shrunk ProtobufUtil by moving methods used by one CPEP only back to the 
CPEP either
        into Client class or as new Util class; e.g. AccessControlUtil.

        There are actually two versions of ProtobufUtil now; a shaded one and a 
subset
        that is used by CPEPs doing non-shaded work.

        Made it so hbase-common no longer depends on hbase-protocol (with 
Matteo's help)

        R*Converter classes got moved down under shaded package -- they are for 
internal
        use only. There are no non-shaded versions of these classes.

        D 
hbase-client/src/main/java/org/apache/hadoop/hbase/client/AbstractRegionServerCallable
        D RetryingCallableBase
         Not used anymore and we have too many tiers of Callables so 
removed/cleaned-up.

        A ClientServicecallable
         Had to add this one. RegionServerCallable was made generic so it could 
be used
         for a few Interfaces (Client and Admin). Then added 
ClientServiceCallable to
         implement RegionServerCallable with the Client Interface.


Project: http://git-wip-us.apache.org/repos/asf/hbase/repo
Commit: http://git-wip-us.apache.org/repos/asf/hbase/commit/17d4b70d
Tree: http://git-wip-us.apache.org/repos/asf/hbase/tree/17d4b70d
Diff: http://git-wip-us.apache.org/repos/asf/hbase/diff/17d4b70d

Branch: refs/heads/HBASE-16264
Commit: 17d4b70df99b8906c3e883e94d2e7404c7a996d7
Parents: 63808a2
Author: stack <st...@duboce.net>
Authored: Wed Sep 28 17:54:44 2016 -0700
Committer: stack <st...@apache.org>
Committed: Thu Sep 29 12:35:52 2016 -0700

----------------------------------------------------------------------
 hbase-client/pom.xml                            |     4 +
 .../java/org/apache/hadoop/hbase/ClusterId.java |     4 +-
 .../org/apache/hadoop/hbase/ClusterStatus.java  |    16 +-
 .../apache/hadoop/hbase/HColumnDescriptor.java  |     4 +-
 .../org/apache/hadoop/hbase/HRegionInfo.java    |     8 +-
 .../apache/hadoop/hbase/HTableDescriptor.java   |     4 +-
 .../apache/hadoop/hbase/MetaTableAccessor.java  |   115 +-
 .../org/apache/hadoop/hbase/RegionLoad.java     |     4 +-
 .../org/apache/hadoop/hbase/ServerLoad.java     |     6 +-
 .../client/AbstractRegionServerCallable.java    |   138 -
 .../hadoop/hbase/client/AsyncProcess.java       |    45 +-
 .../hbase/client/AsyncRequestFutureImpl.java    |     7 +-
 .../client/CancellableRegionServerCallable.java |    59 +-
 .../hadoop/hbase/client/ClientScanner.java      |     4 +-
 .../hbase/client/ClientServiceCallable.java     |    56 +
 .../hadoop/hbase/client/ClientSmallScanner.java |    10 +-
 .../hadoop/hbase/client/ClusterConnection.java  |     6 +-
 .../hbase/client/ClusterStatusListener.java     |     4 +-
 .../hbase/client/ConnectionImplementation.java  |    47 +-
 .../hadoop/hbase/client/ConnectionUtils.java    |     4 +-
 .../client/FastFailInterceptorContext.java      |    11 +-
 .../hbase/client/FlushRegionCallable.java       |     6 +-
 .../apache/hadoop/hbase/client/HBaseAdmin.java  |   262 +-
 .../org/apache/hadoop/hbase/client/HTable.java  |   148 +-
 .../hadoop/hbase/client/MasterCallable.java     |     2 +-
 .../hbase/client/MasterKeepAliveConnection.java |     2 +-
 .../hadoop/hbase/client/MetricsConnection.java  |    10 +-
 .../hadoop/hbase/client/MultiResponse.java      |     2 +-
 .../hbase/client/MultiServerCallable.java       |    21 +-
 .../apache/hadoop/hbase/client/Mutation.java    |    56 +-
 .../client/NoOpRetryableCallerInterceptor.java  |     8 +-
 .../client/NoOpRetryingInterceptorContext.java  |     9 +-
 .../client/NoncedRegionServerCallable.java      |     9 +-
 .../org/apache/hadoop/hbase/client/Query.java   |     7 +-
 .../client/RegionAdminServiceCallable.java      |     4 +-
 .../client/RegionCoprocessorRpcChannel.java     |   103 +
 .../client/RegionCoprocessorServiceExec.java    |     4 +-
 .../hbase/client/RegionServerCallable.java      |   202 +-
 .../org/apache/hadoop/hbase/client/Result.java  |     2 +-
 .../hadoop/hbase/client/RetryingCallable.java   |    38 +-
 .../hbase/client/RetryingCallableBase.java      |    60 -
 .../RetryingCallerInterceptorContext.java       |     8 +-
 .../hbase/client/ReversedScannerCallable.java   |    12 +-
 .../hbase/client/RpcRetryingCallable.java       |     2 +-
 .../hbase/client/RpcRetryingCallerImpl.java     |     2 +-
 .../RpcRetryingCallerWithReadReplicas.java      |    56 +-
 .../org/apache/hadoop/hbase/client/Scan.java    |     2 +-
 .../hadoop/hbase/client/ScannerCallable.java    |    18 +-
 .../hbase/client/SecureBulkLoadClient.java      |    31 +-
 .../hbase/client/SyncCoprocessorRpcChannel.java |    80 +
 .../apache/hadoop/hbase/client/TableState.java  |     4 +-
 .../client/coprocessor/AggregationClient.java   |   823 -
 .../BigDecimalColumnInterpreter.java            |     7 +-
 .../replication/ReplicationSerDeHelper.java     |    10 +-
 .../hadoop/hbase/filter/BinaryComparator.java   |    10 +-
 .../hbase/filter/BinaryPrefixComparator.java    |     7 +-
 .../hadoop/hbase/filter/BitComparator.java      |     7 +-
 .../hbase/filter/ColumnCountGetFilter.java      |     4 +-
 .../hbase/filter/ColumnPaginationFilter.java    |     6 +-
 .../hadoop/hbase/filter/ColumnPrefixFilter.java |     6 +-
 .../hadoop/hbase/filter/ColumnRangeFilter.java  |     6 +-
 .../hadoop/hbase/filter/CompareFilter.java      |     8 +-
 .../hbase/filter/DependentColumnFilter.java     |     9 +-
 .../hadoop/hbase/filter/FamilyFilter.java       |     7 +-
 .../apache/hadoop/hbase/filter/FilterList.java  |    10 +-
 .../hadoop/hbase/filter/FilterWrapper.java      |     7 +-
 .../hadoop/hbase/filter/FirstKeyOnlyFilter.java |     4 +-
 .../FirstKeyValueMatchingQualifiersFilter.java  |     8 +-
 .../hadoop/hbase/filter/FuzzyRowFilter.java     |     8 +-
 .../hbase/filter/InclusiveStopFilter.java       |     6 +-
 .../hadoop/hbase/filter/KeyOnlyFilter.java      |     4 +-
 .../hadoop/hbase/filter/LongComparator.java     |     8 +-
 .../hbase/filter/MultiRowRangeFilter.java       |     6 +-
 .../filter/MultipleColumnPrefixFilter.java      |     6 +-
 .../hadoop/hbase/filter/NullComparator.java     |     4 +-
 .../apache/hadoop/hbase/filter/PageFilter.java  |     4 +-
 .../hadoop/hbase/filter/PrefixFilter.java       |     6 +-
 .../hadoop/hbase/filter/QualifierFilter.java    |     7 +-
 .../hadoop/hbase/filter/RandomRowFilter.java    |     4 +-
 .../hbase/filter/RegexStringComparator.java     |     4 +-
 .../apache/hadoop/hbase/filter/RowFilter.java   |     7 +-
 .../filter/SingleColumnValueExcludeFilter.java  |     7 +-
 .../hbase/filter/SingleColumnValueFilter.java   |    28 +-
 .../apache/hadoop/hbase/filter/SkipFilter.java  |     7 +-
 .../hbase/filter/SubstringComparator.java       |     4 +-
 .../hadoop/hbase/filter/TimestampsFilter.java   |     4 +-
 .../apache/hadoop/hbase/filter/ValueFilter.java |     7 +-
 .../hadoop/hbase/filter/WhileMatchFilter.java   |     7 +-
 .../hadoop/hbase/ipc/AbstractRpcClient.java     |    45 +-
 .../hadoop/hbase/ipc/BlockingRpcCallback.java   |     4 +-
 .../hadoop/hbase/ipc/BlockingRpcConnection.java |    18 +-
 .../java/org/apache/hadoop/hbase/ipc/Call.java  |    10 +-
 .../hadoop/hbase/ipc/CoprocessorRpcChannel.java |     5 +-
 .../hadoop/hbase/ipc/CoprocessorRpcUtils.java   |   199 +-
 .../hbase/ipc/DelegatingHBaseRpcController.java |     4 +-
 .../hadoop/hbase/ipc/HBaseRpcController.java    |     4 +-
 .../hbase/ipc/HBaseRpcControllerImpl.java       |     2 +-
 .../org/apache/hadoop/hbase/ipc/IPCUtil.java    |    12 +-
 .../hbase/ipc/MasterCoprocessorRpcChannel.java  |    80 -
 .../hadoop/hbase/ipc/NettyRpcConnection.java    |     8 +-
 .../hadoop/hbase/ipc/NettyRpcDuplexHandler.java |    14 +-
 .../hbase/ipc/RegionCoprocessorRpcChannel.java  |   121 -
 .../ipc/RegionServerCoprocessorRpcChannel.java  |    76 -
 .../org/apache/hadoop/hbase/ipc/RpcClient.java  |     4 +-
 .../apache/hadoop/hbase/ipc/RpcConnection.java  |     6 +-
 .../hbase/ipc/SyncCoprocessorRpcChannel.java    |    79 -
 .../apache/hadoop/hbase/master/RegionState.java |     2 +-
 .../hadoop/hbase/protobuf/ProtobufMagic.java    |    90 +
 .../hadoop/hbase/protobuf/ProtobufUtil.java     |  2294 +-
 .../hadoop/hbase/protobuf/RequestConverter.java |  1794 -
 .../hbase/protobuf/ResponseConverter.java       |   442 -
 .../hadoop/hbase/quotas/QuotaRetriever.java     |     2 +-
 .../hadoop/hbase/quotas/QuotaSettings.java      |     4 +-
 .../hbase/quotas/QuotaSettingsFactory.java      |     8 +-
 .../hadoop/hbase/quotas/QuotaTableUtil.java     |     4 +-
 .../hadoop/hbase/quotas/ThrottleSettings.java   |     6 +-
 .../replication/ReplicationPeerConfig.java      |     1 -
 .../replication/ReplicationPeerZKImpl.java      |     4 +-
 .../replication/ReplicationPeersZKImpl.java     |     2 +-
 .../replication/ReplicationQueuesZKImpl.java    |     2 +
 .../replication/ReplicationStateZKBase.java     |     4 +-
 .../hadoop/hbase/security/EncryptionUtil.java   |     4 +-
 .../hadoop/hbase/security/SecurityInfo.java     |     8 +-
 .../security/access/AccessControlClient.java    |    36 +-
 .../security/access/AccessControlUtil.java      |   766 +
 .../security/visibility/VisibilityClient.java   |    34 +-
 .../hbase/shaded/protobuf/ProtobufUtil.java     |  3161 +
 .../hbase/shaded/protobuf/RequestConverter.java |  1498 +
 .../shaded/protobuf/ResponseConverter.java      |   427 +
 .../ClientSnapshotDescriptionUtils.java         |     2 +-
 .../hbase/zookeeper/MasterAddressTracker.java   |    15 +-
 .../hbase/zookeeper/MetaTableLocator.java       |    16 +-
 .../apache/hadoop/hbase/zookeeper/ZKUtil.java   |    15 +-
 .../hbase/TestInterfaceAudienceAnnotations.java |    11 +
 .../client/TestClientExponentialBackoff.java    |     4 +-
 .../hbase/client/TestClientNoCluster.java       |    56 +-
 .../org/apache/hadoop/hbase/client/TestGet.java |     4 +-
 .../hbase/client/TestMetricsConnection.java     |    20 +-
 .../hbase/client/TestProcedureFuture.java       |     4 +-
 .../apache/hadoop/hbase/client/TestScan.java    |     5 +-
 .../hbase/client/TestSnapshotFromAdmin.java     |    10 +-
 .../exceptions/TestClientExceptionsUtil.java    |     2 +-
 hbase-common/pom.xml                            |     4 -
 .../org/apache/hadoop/hbase/ProcedureInfo.java  |    27 +-
 .../org/apache/hadoop/hbase/ProcedureUtil.java  |   103 -
 .../org/apache/hadoop/hbase/ServerName.java     |    55 +-
 .../hbase/filter/ByteArrayComparable.java       |     9 -
 .../hbase/io/encoding/EncodedDataBlock.java     |     4 +-
 .../hadoop/hbase/rsgroup/RSGroupInfo.java       |     3 +-
 .../hadoop/hbase/util/ForeignExceptionUtil.java |   128 -
 hbase-endpoint/README.txt                       |    42 +
 hbase-endpoint/pom.xml                          |   299 +
 .../client/coprocessor/AggregationClient.java   |   864 +
 .../coprocessor/AggregateImplementation.java    |   530 +
 .../example/generated/BulkDeleteProtos.java     |  1792 +
 .../generated/ColumnAggregationProtos.java      |  1277 +
 .../ColumnAggregationWithErrorsProtos.java      |  1290 +
 ...ColumnAggregationWithNullResponseProtos.java |  1283 +
 .../DummyRegionServerEndpointProtos.java        |  1225 +
 .../IncrementCounterProcessorTestProtos.java    |  4059 +
 .../protobuf/generated/AggregateProtos.java     |  2375 +
 .../generated/SecureBulkLoadProtos.java         |  2088 +
 .../security/access/SecureBulkLoadEndpoint.java |   171 +
 .../src/main/protobuf/Aggregate.proto           |    63 +
 .../src/main/protobuf/BulkDelete.proto          |    51 +
 .../ColumnAggregationNullResponseProtocol.proto |    38 +
 .../protobuf/ColumnAggregationProtocol.proto    |    35 +
 .../ColumnAggregationWithErrorsProtocol.proto   |    38 +
 .../protobuf/DummyRegionServerEndpoint.proto    |    37 +
 .../protobuf/IncrementCounterProcessor.proto    |    55 +
 .../src/main/protobuf/SecureBulkLoad.proto      |    48 +
 .../hbase/client/TestRpcControllerFactory.java  |   221 +
 .../coprocessor/ColumnAggregationEndpoint.java  |   117 +
 .../ColumnAggregationEndpointNullResponse.java  |   129 +
 .../ColumnAggregationEndpointWithErrors.java    |   126 +
 .../coprocessor/ProtobufCoprocessorService.java |    97 +
 .../TestBatchCoprocessorEndpoint.java           |   283 +
 .../hbase/coprocessor/TestClassLoading.java     |   563 +
 .../coprocessor/TestCoprocessorEndpoint.java    |   349 +
 .../TestCoprocessorTableEndpoint.java           |   182 +
 .../TestRegionServerCoprocessorEndpoint.java    |   137 +
 .../coprocessor/TestRowProcessorEndpoint.java   |   665 +
 .../hbase/ipc/TestCoprocessorRpcUtils.java      |    45 +
 .../SecureBulkLoadEndpointClient.java           |   167 +
 ...gionServerBulkLoadWithOldSecureEndpoint.java |   179 +
 .../regionserver/TestServerCustomProtocol.java  |   480 +
 hbase-examples/README.txt                       |     4 +
 hbase-examples/pom.xml                          |    40 +
 .../coprocessor/example/BulkDeleteEndpoint.java |     4 +-
 .../coprocessor/example/RowCountEndpoint.java   |     6 +-
 hbase-examples/src/main/protobuf/Examples.proto |    38 +
 .../example/TestBulkDeleteProtocol.java         |   443 -
 .../example/TestRowCountEndpoint.java           |   107 -
 .../TestZooKeeperScanPolicyObserver.java        |   130 -
 .../hadoop/hbase/DistributedHBaseCluster.java   |    10 +-
 .../hbase/IntegrationTestMetaReplicas.java      |     3 +-
 .../hbase/ipc/IntegrationTestRpcClient.java     |    12 +-
 hbase-procedure/pom.xml                         |     2 +-
 .../hadoop/hbase/procedure2/Procedure.java      |    26 +-
 .../hbase/procedure2/ProcedureExecutor.java     |     6 +-
 .../hadoop/hbase/procedure2/ProcedureUtil.java  |   108 +
 .../procedure2/RemoteProcedureException.java    |     7 +-
 .../hbase/procedure2/RootProcedureState.java    |     2 +-
 .../hbase/procedure2/SequentialProcedure.java   |     2 +-
 .../hbase/procedure2/StateMachineProcedure.java |     2 +-
 .../procedure2/store/ProcedureStoreTracker.java |     6 +-
 .../procedure2/store/wal/ProcedureWALFile.java  |     6 +-
 .../store/wal/ProcedureWALFormat.java           |     8 +-
 .../store/wal/ProcedureWALFormatReader.java     |     8 +-
 .../store/wal/ProcedureWALPrettyPrinter.java    |     4 +-
 .../procedure2/store/wal/WALProcedureStore.java |     6 +-
 .../procedure2/ProcedureTestingUtility.java     |    28 +-
 .../hbase/procedure2/TestChildProcedures.java   |     2 +-
 .../procedure2/TestProcedureExecution.java      |     6 +-
 .../hbase/procedure2/TestProcedureToString.java |     4 +-
 hbase-protocol-shaded/README.txt                |    41 +
 hbase-protocol-shaded/pom.xml                   |   289 +
 .../protobuf/HBaseZeroCopyByteString.java       |    77 +
 .../protobuf/generated/TestProcedureProtos.java |   530 +
 .../ipc/protobuf/generated/TestProtos.java      |  2778 +
 .../generated/TestRpcServiceProtos.java         |   568 +
 .../shaded/protobuf/generated/AdminProtos.java  | 24326 ++++++
 .../shaded/protobuf/generated/CellProtos.java   |  2244 +
 .../shaded/protobuf/generated/ClientProtos.java | 39725 ++++++++++
 .../protobuf/generated/ClusterIdProtos.java     |   628 +
 .../protobuf/generated/ClusterStatusProtos.java | 14975 ++++
 .../protobuf/generated/ComparatorProtos.java    |  5419 ++
 .../protobuf/generated/EncryptionProtos.java    |   954 +
 .../protobuf/generated/ErrorHandlingProtos.java |  2895 +
 .../shaded/protobuf/generated/FSProtos.java     |  1235 +
 .../shaded/protobuf/generated/FilterProtos.java | 17810 +++++
 .../shaded/protobuf/generated/HBaseProtos.java  | 19894 +++++
 .../shaded/protobuf/generated/HFileProtos.java  |  2403 +
 .../protobuf/generated/LoadBalancerProtos.java  |   485 +
 .../protobuf/generated/MapReduceProtos.java     |  1737 +
 .../generated/MasterProcedureProtos.java        | 22424 ++++++
 .../shaded/protobuf/generated/MasterProtos.java | 66862 +++++++++++++++++
 .../protobuf/generated/ProcedureProtos.java     |  7599 ++
 .../shaded/protobuf/generated/QuotaProtos.java  |  4381 ++
 .../shaded/protobuf/generated/RPCProtos.java    |  6299 ++
 .../generated/RegionNormalizerProtos.java       |   485 +
 .../generated/RegionServerStatusProtos.java     |  9239 +++
 .../protobuf/generated/SnapshotProtos.java      |  4789 ++
 .../protobuf/generated/TracingProtos.java       |   591 +
 .../shaded/protobuf/generated/WALProtos.java    | 12108 +++
 .../protobuf/generated/ZooKeeperProtos.java     |  9550 +++
 .../hadoop/hbase/shaded/util/ByteStringer.java  |    69 +
 .../hadoop/hbase/util/ForeignExceptionUtil.java |   146 +
 .../src/main/protobuf/Admin.proto               |   309 +
 .../src/main/protobuf/Cell.proto                |    67 +
 .../src/main/protobuf/CellSetMessage.proto      |    28 +
 .../src/main/protobuf/Client.proto              |   511 +
 .../src/main/protobuf/ClusterId.proto           |    34 +
 .../src/main/protobuf/ClusterStatus.proto       |   227 +
 .../src/main/protobuf/Comparator.proto          |    74 +
 .../src/main/protobuf/Encryption.proto          |    33 +
 .../src/main/protobuf/ErrorHandling.proto       |    58 +
 .../src/main/protobuf/FS.proto                  |    45 +
 .../src/main/protobuf/Filter.proto              |   171 +
 .../src/main/protobuf/HBase.proto               |   252 +
 .../src/main/protobuf/HFile.proto               |    49 +
 .../src/main/protobuf/LoadBalancer.proto        |    29 +
 .../src/main/protobuf/MapReduce.proto           |    37 +
 .../src/main/protobuf/Master.proto              |   831 +
 .../src/main/protobuf/MasterProcedure.proto     |   300 +
 .../src/main/protobuf/Procedure.proto           |   120 +
 .../src/main/protobuf/Quota.proto               |    76 +
 .../src/main/protobuf/RPC.proto                 |   137 +
 .../src/main/protobuf/RSGroup.proto             |    34 +
 .../src/main/protobuf/RSGroupAdmin.proto        |   136 +
 .../src/main/protobuf/RegionNormalizer.proto    |    28 +
 .../src/main/protobuf/RegionServerStatus.proto  |   158 +
 .../src/main/protobuf/RowProcessor.proto        |    45 +
 .../src/main/protobuf/Snapshot.proto            |    66 +
 .../src/main/protobuf/TestProcedure.proto       |    24 +
 .../src/main/protobuf/Tracing.proto             |    33 +
 .../src/main/protobuf/WAL.proto                 |   173 +
 .../src/main/protobuf/ZooKeeper.proto           |   162 +
 .../src/main/protobuf/test.proto                |    43 +
 .../src/main/protobuf/test_rpc_service.proto    |    35 +
 hbase-protocol/README.txt                       |    17 +-
 hbase-protocol/pom.xml                          |    36 +-
 .../generated/ColumnAggregationProtos.java      |  1277 -
 .../ColumnAggregationWithErrorsProtos.java      |  1290 -
 ...ColumnAggregationWithNullResponseProtos.java |  1283 -
 .../DummyRegionServerEndpointProtos.java        |  1225 -
 .../IncrementCounterProcessorTestProtos.java    |  4059 -
 .../protobuf/generated/TestProcedureProtos.java |   530 -
 .../hadoop/hbase/protobuf/ProtobufMagic.java    |    90 -
 .../protobuf/generated/AggregateProtos.java     |  2375 -
 .../generated/MasterProcedureProtos.java        | 22424 ------
 .../hbase/protobuf/generated/MasterProtos.java  | 66862 -----------------
 .../generated/MultiRowMutationProtos.java       |   238 +-
 .../protobuf/generated/ProcedureProtos.java     |  7599 --
 .../protobuf/generated/RSGroupAdminProtos.java  | 11855 ---
 .../hbase/protobuf/generated/RSGroupProtos.java |  1331 -
 .../generated/RegionNormalizerProtos.java       |   485 -
 .../generated/RegionServerStatusProtos.java     |  9239 ---
 .../generated/SecureBulkLoadProtos.java         |  2088 -
 .../rest/protobuf/generated/CellMessage.java    |   731 -
 .../rest/protobuf/generated/CellSetMessage.java |  1521 -
 .../protobuf/generated/ColumnSchemaMessage.java |  1904 -
 .../generated/NamespacePropertiesMessage.java   |  1394 -
 .../protobuf/generated/NamespacesMessage.java   |   547 -
 .../rest/protobuf/generated/ScannerMessage.java |  1578 -
 .../generated/StorageClusterStatusMessage.java  |  3955 -
 .../protobuf/generated/TableInfoMessage.java    |  1802 -
 .../protobuf/generated/TableListMessage.java    |   547 -
 .../protobuf/generated/TableSchemaMessage.java  |  2125 -
 .../rest/protobuf/generated/VersionMessage.java |  1147 -
 .../protobuf/generated/SparkFilterProtos.java   |  2006 -
 .../src/main/protobuf/Aggregate.proto           |    63 -
 .../src/main/protobuf/BulkDelete.proto          |    51 -
 .../src/main/protobuf/CellMessage.proto         |    25 -
 .../src/main/protobuf/CellSetMessage.proto      |    28 -
 .../ColumnAggregationNullResponseProtocol.proto |    38 -
 .../protobuf/ColumnAggregationProtocol.proto    |    35 -
 .../ColumnAggregationWithErrorsProtocol.proto   |    38 -
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 pom.xml                                         |    14 +-
 src/main/asciidoc/_chapters/cp.adoc             |     9 +-
 705 files changed, 352513 insertions(+), 171750 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/hbase/blob/17d4b70d/hbase-client/pom.xml
----------------------------------------------------------------------
diff --git a/hbase-client/pom.xml b/hbase-client/pom.xml
index acde9de..f3e27bc 100644
--- a/hbase-client/pom.xml
+++ b/hbase-client/pom.xml
@@ -134,6 +134,10 @@
     </dependency>
     <dependency>
       <groupId>org.apache.hbase</groupId>
+      <artifactId>hbase-protocol-shaded</artifactId>
+    </dependency>
+    <dependency>
+      <groupId>org.apache.hbase</groupId>
       <artifactId>hbase-protocol</artifactId>
     </dependency>
     <!-- General dependencies -->

http://git-wip-us.apache.org/repos/asf/hbase/blob/17d4b70d/hbase-client/src/main/java/org/apache/hadoop/hbase/ClusterId.java
----------------------------------------------------------------------
diff --git a/hbase-client/src/main/java/org/apache/hadoop/hbase/ClusterId.java 
b/hbase-client/src/main/java/org/apache/hadoop/hbase/ClusterId.java
index c127627..6d47da6 100644
--- a/hbase-client/src/main/java/org/apache/hadoop/hbase/ClusterId.java
+++ b/hbase-client/src/main/java/org/apache/hadoop/hbase/ClusterId.java
@@ -23,8 +23,8 @@ import java.util.UUID;
 
 import org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.hbase.exceptions.DeserializationException;
-import org.apache.hadoop.hbase.protobuf.ProtobufUtil;
-import org.apache.hadoop.hbase.protobuf.generated.ClusterIdProtos;
+import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;
+import org.apache.hadoop.hbase.shaded.protobuf.generated.ClusterIdProtos;
 import org.apache.hadoop.hbase.util.Bytes;
 
 /**

http://git-wip-us.apache.org/repos/asf/hbase/blob/17d4b70d/hbase-client/src/main/java/org/apache/hadoop/hbase/ClusterStatus.java
----------------------------------------------------------------------
diff --git 
a/hbase-client/src/main/java/org/apache/hadoop/hbase/ClusterStatus.java 
b/hbase-client/src/main/java/org/apache/hadoop/hbase/ClusterStatus.java
index ffeb51a..f00016d 100644
--- a/hbase-client/src/main/java/org/apache/hadoop/hbase/ClusterStatus.java
+++ b/hbase-client/src/main/java/org/apache/hadoop/hbase/ClusterStatus.java
@@ -30,14 +30,14 @@ import java.util.Set;
 import org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.hbase.classification.InterfaceStability;
 import org.apache.hadoop.hbase.master.RegionState;
-import org.apache.hadoop.hbase.protobuf.ProtobufUtil;
-import org.apache.hadoop.hbase.protobuf.generated.ClusterStatusProtos;
-import 
org.apache.hadoop.hbase.protobuf.generated.ClusterStatusProtos.LiveServerInfo;
-import 
org.apache.hadoop.hbase.protobuf.generated.ClusterStatusProtos.RegionInTransition;
-import 
org.apache.hadoop.hbase.protobuf.generated.FSProtos.HBaseVersionFileContent;
-import org.apache.hadoop.hbase.protobuf.generated.HBaseProtos;
-import org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.RegionSpecifier;
-import 
org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.RegionSpecifier.RegionSpecifierType;
+import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;
+import org.apache.hadoop.hbase.shaded.protobuf.generated.ClusterStatusProtos;
+import 
org.apache.hadoop.hbase.shaded.protobuf.generated.ClusterStatusProtos.LiveServerInfo;
+import 
org.apache.hadoop.hbase.shaded.protobuf.generated.ClusterStatusProtos.RegionInTransition;
+import 
org.apache.hadoop.hbase.shaded.protobuf.generated.FSProtos.HBaseVersionFileContent;
+import org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos;
+import 
org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionSpecifier;
+import 
org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionSpecifier.RegionSpecifierType;
 import org.apache.hadoop.hbase.util.ByteStringer;
 import org.apache.hadoop.hbase.util.Bytes;
 import org.apache.hadoop.io.VersionedWritable;

http://git-wip-us.apache.org/repos/asf/hbase/blob/17d4b70d/hbase-client/src/main/java/org/apache/hadoop/hbase/HColumnDescriptor.java
----------------------------------------------------------------------
diff --git 
a/hbase-client/src/main/java/org/apache/hadoop/hbase/HColumnDescriptor.java 
b/hbase-client/src/main/java/org/apache/hadoop/hbase/HColumnDescriptor.java
index b75e8cd..d940509 100644
--- a/hbase-client/src/main/java/org/apache/hadoop/hbase/HColumnDescriptor.java
+++ b/hbase-client/src/main/java/org/apache/hadoop/hbase/HColumnDescriptor.java
@@ -34,8 +34,8 @@ import 
org.apache.hadoop.hbase.exceptions.DeserializationException;
 import org.apache.hadoop.hbase.exceptions.HBaseException;
 import org.apache.hadoop.hbase.io.compress.Compression;
 import org.apache.hadoop.hbase.io.encoding.DataBlockEncoding;
-import org.apache.hadoop.hbase.protobuf.ProtobufUtil;
-import 
org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.ColumnFamilySchema;
+import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;
+import 
org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.ColumnFamilySchema;
 import org.apache.hadoop.hbase.regionserver.BloomType;
 import org.apache.hadoop.hbase.util.Bytes;
 import org.apache.hadoop.hbase.util.PrettyPrinter;

http://git-wip-us.apache.org/repos/asf/hbase/blob/17d4b70d/hbase-client/src/main/java/org/apache/hadoop/hbase/HRegionInfo.java
----------------------------------------------------------------------
diff --git 
a/hbase-client/src/main/java/org/apache/hadoop/hbase/HRegionInfo.java 
b/hbase-client/src/main/java/org/apache/hadoop/hbase/HRegionInfo.java
index ab9045d..09e53ce 100644
--- a/hbase-client/src/main/java/org/apache/hadoop/hbase/HRegionInfo.java
+++ b/hbase-client/src/main/java/org/apache/hadoop/hbase/HRegionInfo.java
@@ -33,11 +33,11 @@ import org.apache.hadoop.hbase.client.RegionReplicaUtil;
 import org.apache.hadoop.hbase.KeyValue.KVComparator;
 import org.apache.hadoop.hbase.exceptions.DeserializationException;
 import org.apache.hadoop.hbase.master.RegionState;
-import org.apache.hadoop.hbase.protobuf.ProtobufUtil;
-import org.apache.hadoop.hbase.protobuf.generated.HBaseProtos;
-import org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.RegionInfo;
+import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;
+import org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos;
+import 
org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo;
 import org.apache.hadoop.hbase.util.ByteArrayHashKey;
-import org.apache.hadoop.hbase.util.ByteStringer;
+import org.apache.hadoop.hbase.shaded.util.ByteStringer;
 import org.apache.hadoop.hbase.util.Bytes;
 import org.apache.hadoop.hbase.util.HashKey;
 import org.apache.hadoop.hbase.util.JenkinsHash;

http://git-wip-us.apache.org/repos/asf/hbase/blob/17d4b70d/hbase-client/src/main/java/org/apache/hadoop/hbase/HTableDescriptor.java
----------------------------------------------------------------------
diff --git 
a/hbase-client/src/main/java/org/apache/hadoop/hbase/HTableDescriptor.java 
b/hbase-client/src/main/java/org/apache/hadoop/hbase/HTableDescriptor.java
index 9abdf42..3d8d7da 100644
--- a/hbase-client/src/main/java/org/apache/hadoop/hbase/HTableDescriptor.java
+++ b/hbase-client/src/main/java/org/apache/hadoop/hbase/HTableDescriptor.java
@@ -40,8 +40,8 @@ import 
org.apache.hadoop.hbase.classification.InterfaceStability;
 import org.apache.hadoop.hbase.client.Durability;
 import org.apache.hadoop.hbase.client.RegionReplicaUtil;
 import org.apache.hadoop.hbase.exceptions.DeserializationException;
-import org.apache.hadoop.hbase.protobuf.ProtobufUtil;
-import org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.TableSchema;
+import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;
+import 
org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.TableSchema;
 import org.apache.hadoop.hbase.security.User;
 import org.apache.hadoop.hbase.util.Bytes;
 

http://git-wip-us.apache.org/repos/asf/hbase/blob/17d4b70d/hbase-client/src/main/java/org/apache/hadoop/hbase/MetaTableAccessor.java
----------------------------------------------------------------------
diff --git 
a/hbase-client/src/main/java/org/apache/hadoop/hbase/MetaTableAccessor.java 
b/hbase-client/src/main/java/org/apache/hadoop/hbase/MetaTableAccessor.java
index 2b50829..09980c0 100644
--- a/hbase-client/src/main/java/org/apache/hadoop/hbase/MetaTableAccessor.java
+++ b/hbase-client/src/main/java/org/apache/hadoop/hbase/MetaTableAccessor.java
@@ -17,9 +17,6 @@
  */
 package org.apache.hadoop.hbase;
 
-import com.google.common.annotations.VisibleForTesting;
-import com.google.protobuf.ServiceException;
-
 import java.io.Closeable;
 import java.io.IOException;
 import java.io.InterruptedIOException;
@@ -36,8 +33,6 @@ import java.util.TreeMap;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
-import edu.umd.cs.findbugs.annotations.NonNull;
-import edu.umd.cs.findbugs.annotations.Nullable;
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.conf.Configuration;
@@ -51,6 +46,7 @@ import org.apache.hadoop.hbase.client.Mutation;
 import org.apache.hadoop.hbase.client.Put;
 import org.apache.hadoop.hbase.client.RegionLocator;
 import org.apache.hadoop.hbase.client.RegionReplicaUtil;
+import org.apache.hadoop.hbase.client.RegionServerCallable;
 import org.apache.hadoop.hbase.client.Result;
 import org.apache.hadoop.hbase.client.ResultScanner;
 import org.apache.hadoop.hbase.client.Scan;
@@ -60,13 +56,22 @@ import 
org.apache.hadoop.hbase.exceptions.DeserializationException;
 import org.apache.hadoop.hbase.ipc.CoprocessorRpcChannel;
 import org.apache.hadoop.hbase.protobuf.ProtobufUtil;
 import org.apache.hadoop.hbase.protobuf.generated.ClientProtos;
+import org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.RegionSpecifier;
+import 
org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.RegionSpecifier.RegionSpecifierType;
 import org.apache.hadoop.hbase.protobuf.generated.MultiRowMutationProtos;
+import 
org.apache.hadoop.hbase.protobuf.generated.MultiRowMutationProtos.MutateRowsRequest;
+import 
org.apache.hadoop.hbase.protobuf.generated.MultiRowMutationProtos.MutateRowsResponse;
 import org.apache.hadoop.hbase.util.Bytes;
 import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;
 import org.apache.hadoop.hbase.util.ExceptionUtil;
 import org.apache.hadoop.hbase.util.Pair;
 import org.apache.hadoop.hbase.util.PairOfSameType;
 
+import com.google.common.annotations.VisibleForTesting;
+
+import edu.umd.cs.findbugs.annotations.NonNull;
+import edu.umd.cs.findbugs.annotations.Nullable;
+
 /**
  * Read/write operations on region and assignment information store in
  * <code>hbase:meta</code>.
@@ -1677,7 +1682,7 @@ public class MetaTableAccessor {
       } else {
         mutations = new Mutation[] { putOfMerged, deleteA, deleteB };
       }
-      multiMutate(meta, tableRow, mutations);
+      multiMutate(connection, meta, tableRow, mutations);
     } finally {
       meta.close();
     }
@@ -1732,7 +1737,7 @@ public class MetaTableAccessor {
         mutations = new Mutation[]{putParent, putA, putB};
       }
       byte[] tableRow = Bytes.toBytes(parent.getRegionNameAsString() + 
HConstants.DELIMITER);
-      multiMutate(meta, tableRow, mutations);
+      multiMutate(connection, meta, tableRow, mutations);
     } finally {
       meta.close();
     }
@@ -1777,37 +1782,74 @@ public class MetaTableAccessor {
     LOG.info("Deleted table " + table + " state from META");
   }
 
+  private static void multiMutate(Connection connection, Table table, byte[] 
row,
+      Mutation... mutations)
+  throws IOException {
+    multiMutate(connection, table, row, Arrays.asList(mutations));
+  }
+
   /**
-   * Performs an atomic multi-Mutate operation against the given table.
+   * Performs an atomic multi-mutate operation against the given table.
    */
-  private static void multiMutate(Table table, byte[] row, Mutation... 
mutations)
-      throws IOException {
-    CoprocessorRpcChannel channel = table.coprocessorService(row);
-    MultiRowMutationProtos.MutateRowsRequest.Builder mmrBuilder
-      = MultiRowMutationProtos.MutateRowsRequest.newBuilder();
+  // Used by the RSGroup Coprocessor Endpoint. It had a copy/paste of the 
below. Need to reveal
+  // this facility for CPEP use or at least those CPEPs that are on their way 
to becoming part of
+  // core as is the intent for RSGroup eventually.
+  public static void multiMutate(Connection connection, final Table table, 
byte[] row,
+      final List<Mutation> mutations)
+  throws IOException {
     if (METALOG.isDebugEnabled()) {
       METALOG.debug(mutationsToString(mutations));
     }
-    for (Mutation mutation : mutations) {
-      if (mutation instanceof Put) {
-        mmrBuilder.addMutationRequest(ProtobufUtil.toMutation(
-          ClientProtos.MutationProto.MutationType.PUT, mutation));
-      } else if (mutation instanceof Delete) {
-        mmrBuilder.addMutationRequest(ProtobufUtil.toMutation(
-          ClientProtos.MutationProto.MutationType.DELETE, mutation));
-      } else {
-        throw new DoNotRetryIOException("multi in MetaEditor doesn't support "
-          + mutation.getClass().getName());
+    // TODO: Need rollback!!!!
+    // TODO: Need Retry!!!
+    // TODO: What for a timeout? Default write timeout? GET FROM HTABLE?
+    // TODO: Review when we come through with ProcedureV2.
+    RegionServerCallable<MutateRowsResponse,
+        MultiRowMutationProtos.MultiRowMutationService.BlockingInterface> 
callable =
+        new RegionServerCallable<MutateRowsResponse,
+          MultiRowMutationProtos.MultiRowMutationService.BlockingInterface>(
+              connection, table.getName(), row, null/*RpcController not used 
in this CPEP!*/) {
+      @Override
+      protected MutateRowsResponse rpcCall() throws Exception {
+        final MutateRowsRequest.Builder builder = 
MutateRowsRequest.newBuilder();
+        for (Mutation mutation : mutations) {
+          if (mutation instanceof Put) {
+            builder.addMutationRequest(ProtobufUtil.toMutation(
+              ClientProtos.MutationProto.MutationType.PUT, mutation));
+          } else if (mutation instanceof Delete) {
+            builder.addMutationRequest(ProtobufUtil.toMutation(
+              ClientProtos.MutationProto.MutationType.DELETE, mutation));
+          } else {
+            throw new DoNotRetryIOException("multi in MetaEditor doesn't 
support "
+              + mutation.getClass().getName());
+          }
+        }
+        // The call to #prepare that ran before this invocation will have 
populated HRegionLocation.
+        HRegionLocation hrl = getLocation();
+        RegionSpecifier region = ProtobufUtil.buildRegionSpecifier(
+            RegionSpecifierType.REGION_NAME, 
hrl.getRegionInfo().getRegionName());
+        builder.setRegion(region);
+        // The rpcController here is awkward. The Coprocessor Endpoint wants 
an instance of a
+        // com.google.protobuf but we are going over an rpc that is all shaded 
protobuf so it
+        // wants a org.apache.h.h.shaded.com.google.protobuf.RpcController. 
Set up a factory
+        // that makes com.google.protobuf.RpcController and then copy into it 
configs.
+        return getStub().mutateRows(null, builder.build());
       }
-    }
 
-    MultiRowMutationProtos.MultiRowMutationService.BlockingInterface service =
-      MultiRowMutationProtos.MultiRowMutationService.newBlockingStub(channel);
-    try {
-      service.mutateRows(null, mmrBuilder.build());
-    } catch (ServiceException ex) {
-      ProtobufUtil.toIOException(ex);
-    }
+      @Override
+      // Called on the end of the super.prepare call. Set the stub.
+      protected void setStubByServiceName(ServerName serviceName/*Ignored*/) 
throws IOException {
+        CoprocessorRpcChannel channel = table.coprocessorService(getRow());
+        
setStub(MultiRowMutationProtos.MultiRowMutationService.newBlockingStub(channel));
+      }
+    };
+    int writeTimeout = 
connection.getConfiguration().getInt(HConstants.HBASE_RPC_WRITE_TIMEOUT_KEY,
+        connection.getConfiguration().getInt(HConstants.HBASE_RPC_TIMEOUT_KEY,
+            HConstants.DEFAULT_HBASE_RPC_TIMEOUT));
+    // The region location should be cached in connection. Call prepare so 
this callable picks
+    // up the region location (see super.prepare method).
+    callable.prepare(false);
+    callable.call(writeTimeout);
   }
 
   /**
@@ -2026,16 +2068,6 @@ public class MetaTableAccessor {
     return p;
   }
 
-  private static String mutationsToString(Mutation ... mutations) throws 
IOException {
-    StringBuilder sb = new StringBuilder();
-    String prefix = "";
-    for (Mutation mutation : mutations) {
-      sb.append(prefix).append(mutationToString(mutation));
-      prefix = ", ";
-    }
-    return sb.toString();
-  }
-
   private static String mutationsToString(List<? extends Mutation> mutations) 
throws IOException {
     StringBuilder sb = new StringBuilder();
     String prefix = "";
@@ -2169,5 +2201,4 @@ public class MetaTableAccessor {
     }
     return null;
   }
-
 }

http://git-wip-us.apache.org/repos/asf/hbase/blob/17d4b70d/hbase-client/src/main/java/org/apache/hadoop/hbase/RegionLoad.java
----------------------------------------------------------------------
diff --git a/hbase-client/src/main/java/org/apache/hadoop/hbase/RegionLoad.java 
b/hbase-client/src/main/java/org/apache/hadoop/hbase/RegionLoad.java
index 1702767..befb2de 100644
--- a/hbase-client/src/main/java/org/apache/hadoop/hbase/RegionLoad.java
+++ b/hbase-client/src/main/java/org/apache/hadoop/hbase/RegionLoad.java
@@ -24,8 +24,8 @@ import java.util.List;
 
 import org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.hbase.classification.InterfaceStability;
-import org.apache.hadoop.hbase.protobuf.generated.ClusterStatusProtos;
-import 
org.apache.hadoop.hbase.protobuf.generated.ClusterStatusProtos.StoreSequenceId;
+import org.apache.hadoop.hbase.shaded.protobuf.generated.ClusterStatusProtos;
+import 
org.apache.hadoop.hbase.shaded.protobuf.generated.ClusterStatusProtos.StoreSequenceId;
 import org.apache.hadoop.hbase.util.Bytes;
 import org.apache.hadoop.hbase.util.Strings;
 

http://git-wip-us.apache.org/repos/asf/hbase/blob/17d4b70d/hbase-client/src/main/java/org/apache/hadoop/hbase/ServerLoad.java
----------------------------------------------------------------------
diff --git a/hbase-client/src/main/java/org/apache/hadoop/hbase/ServerLoad.java 
b/hbase-client/src/main/java/org/apache/hadoop/hbase/ServerLoad.java
index 3ea59db..d16c90f 100644
--- a/hbase-client/src/main/java/org/apache/hadoop/hbase/ServerLoad.java
+++ b/hbase-client/src/main/java/org/apache/hadoop/hbase/ServerLoad.java
@@ -28,9 +28,9 @@ import java.util.TreeSet;
 
 import org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.hbase.classification.InterfaceStability;
-import org.apache.hadoop.hbase.protobuf.ProtobufUtil;
-import org.apache.hadoop.hbase.protobuf.generated.ClusterStatusProtos;
-import org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.Coprocessor;
+import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;
+import org.apache.hadoop.hbase.shaded.protobuf.generated.ClusterStatusProtos;
+import 
org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.Coprocessor;
 import org.apache.hadoop.hbase.replication.ReplicationLoadSink;
 import org.apache.hadoop.hbase.replication.ReplicationLoadSource;
 import org.apache.hadoop.hbase.util.Bytes;

http://git-wip-us.apache.org/repos/asf/hbase/blob/17d4b70d/hbase-client/src/main/java/org/apache/hadoop/hbase/client/AbstractRegionServerCallable.java
----------------------------------------------------------------------
diff --git 
a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/AbstractRegionServerCallable.java
 
b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/AbstractRegionServerCallable.java
deleted file mode 100644
index 5a1f5cc..0000000
--- 
a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/AbstractRegionServerCallable.java
+++ /dev/null
@@ -1,138 +0,0 @@
-/**
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements.  See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership.  The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License.  You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.apache.hadoop.hbase.client;
-
-import java.io.IOException;
-
-import org.apache.hadoop.hbase.HRegionInfo;
-import org.apache.hadoop.hbase.HRegionLocation;
-import org.apache.hadoop.hbase.ServerName;
-import org.apache.hadoop.hbase.TableName;
-import org.apache.hadoop.hbase.TableNotEnabledException;
-import org.apache.hadoop.hbase.classification.InterfaceAudience;
-import org.apache.hadoop.hbase.util.Bytes;
-
-/**
- * Added by HBASE-15745 Refactor of RPC classes to better accept async changes.
- * Temporary.
- */
-@InterfaceAudience.Private
-abstract class AbstractRegionServerCallable<T> implements RetryingCallable<T> {
-  protected final Connection connection;
-  protected final TableName tableName;
-  protected final byte[] row;
-  protected HRegionLocation location;
-  protected final static int MIN_WAIT_DEAD_SERVER = 10000;
-
-  /**
-   * @param connection Connection to use.
-   * @param tableName Table name to which <code>row</code> belongs.
-   * @param row The row we want in <code>tableName</code>.
-   */
-  public AbstractRegionServerCallable(Connection connection, TableName 
tableName, byte[] row) {
-    this.connection = connection;
-    this.tableName = tableName;
-    this.row = row;
-  }
-
-  /**
-   * @return {@link ClusterConnection} instance used by this Callable.
-   */
-  ClusterConnection getConnection() {
-    return (ClusterConnection) this.connection;
-  }
-
-  protected HRegionLocation getLocation() {
-    return this.location;
-  }
-
-  protected void setLocation(final HRegionLocation location) {
-    this.location = location;
-  }
-
-  public TableName getTableName() {
-    return this.tableName;
-  }
-
-  public byte [] getRow() {
-    return this.row;
-  }
-
-  @Override
-  public void throwable(Throwable t, boolean retrying) {
-    if (location != null) {
-      getConnection().updateCachedLocations(tableName, 
location.getRegionInfo().getRegionName(),
-          row, t, location.getServerName());
-    }
-  }
-
-  @Override
-  public String getExceptionMessageAdditionalDetail() {
-    return "row '" + Bytes.toString(row) + "' on table '" + tableName + "' at 
" + location;
-  }
-
-  @Override
-  public long sleep(long pause, int tries) {
-    long sleep = ConnectionUtils.getPauseTime(pause, tries);
-    if (sleep < MIN_WAIT_DEAD_SERVER
-        && (location == null || 
getConnection().isDeadServer(location.getServerName()))) {
-      sleep = ConnectionUtils.addJitter(MIN_WAIT_DEAD_SERVER, 0.10f);
-    }
-    return sleep;
-  }
-
-  /**
-   * @return the HRegionInfo for the current region
-   */
-  public HRegionInfo getHRegionInfo() {
-    if (this.location == null) {
-      return null;
-    }
-    return this.location.getRegionInfo();
-  }
-
-  /**
-   * Prepare for connection to the server hosting region with row from 
tablename.  Does lookup
-   * to find region location and hosting server.
-   * @param reload Set to true to re-check the table state
-   * @throws IOException e
-   */
-  @Override
-  public void prepare(final boolean reload) throws IOException {
-    // check table state if this is a retry
-    if (reload && !tableName.equals(TableName.META_TABLE_NAME) &&
-        getConnection().isTableDisabled(tableName)) {
-      throw new TableNotEnabledException(tableName.getNameAsString() + " is 
disabled.");
-    }
-    try (RegionLocator regionLocator = connection.getRegionLocator(tableName)) 
{
-      this.location = regionLocator.getRegionLocation(row);
-    }
-    if (this.location == null) {
-      throw new IOException("Failed to find location, tableName=" + tableName +
-          ", row=" + Bytes.toString(row) + ", reload=" + reload);
-    }
-    setClientByServiceName(this.location.getServerName());
-  }
-
-  /**
-   * Set the Rpc client for Client services
-   * @param serviceName to get client for
-   * @throws IOException When client could not be created
-   */
-  abstract void setClientByServiceName(ServerName serviceName) throws 
IOException;
-}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/hbase/blob/17d4b70d/hbase-client/src/main/java/org/apache/hadoop/hbase/client/AsyncProcess.java
----------------------------------------------------------------------
diff --git 
a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/AsyncProcess.java 
b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/AsyncProcess.java
index 2ffb2e3..f2d9546 100644
--- 
a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/AsyncProcess.java
+++ 
b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/AsyncProcess.java
@@ -19,24 +19,6 @@
 
 package org.apache.hadoop.hbase.client;
 
-import com.google.common.annotations.VisibleForTesting;
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
-import org.apache.hadoop.conf.Configuration;
-import org.apache.hadoop.hbase.HConstants;
-import org.apache.hadoop.hbase.HRegionInfo;
-import org.apache.hadoop.hbase.HRegionLocation;
-import org.apache.hadoop.hbase.RegionLocations;
-import org.apache.hadoop.hbase.ServerName;
-import org.apache.hadoop.hbase.TableName;
-import org.apache.hadoop.hbase.classification.InterfaceAudience;
-import org.apache.hadoop.hbase.client.AsyncProcess.RowChecker.ReturnCode;
-import org.apache.hadoop.hbase.client.coprocessor.Batch;
-import org.apache.hadoop.hbase.ipc.RpcControllerFactory;
-import org.apache.hadoop.hbase.util.Bytes;
-import org.apache.hadoop.hbase.util.EnvironmentEdge;
-import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;
-
 import java.io.IOException;
 import java.io.InterruptedIOException;
 import java.util.ArrayList;
@@ -56,6 +38,25 @@ import java.util.concurrent.ExecutorService;
 import java.util.concurrent.atomic.AtomicInteger;
 import java.util.concurrent.atomic.AtomicLong;
 
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.hbase.HConstants;
+import org.apache.hadoop.hbase.HRegionInfo;
+import org.apache.hadoop.hbase.HRegionLocation;
+import org.apache.hadoop.hbase.RegionLocations;
+import org.apache.hadoop.hbase.ServerName;
+import org.apache.hadoop.hbase.TableName;
+import org.apache.hadoop.hbase.classification.InterfaceAudience;
+import org.apache.hadoop.hbase.client.AsyncProcess.RowChecker.ReturnCode;
+import org.apache.hadoop.hbase.client.coprocessor.Batch;
+import org.apache.hadoop.hbase.ipc.RpcControllerFactory;
+import org.apache.hadoop.hbase.util.Bytes;
+import org.apache.hadoop.hbase.util.EnvironmentEdge;
+import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;
+
+import com.google.common.annotations.VisibleForTesting;
+
 /**
  * This class  allows a continuous flow of requests. It's written to be 
compatible with a
  * synchronous caller such as HTable.
@@ -125,7 +126,7 @@ class AsyncProcess {
   public static final String HBASE_CLIENT_MAX_PERREQUEST_HEAPSIZE = 
"hbase.client.max.perrequest.heapsize";
 
   /**
-   * Default value of {@link #HBASE_CLIENT_MAX_PERREQUEST_HEAPSIZE}.
+   * Default value of #HBASE_CLIENT_MAX_PERREQUEST_HEAPSIZE
    */
   public static final long DEFAULT_HBASE_CLIENT_MAX_PERREQUEST_HEAPSIZE = 
4194304;
 
@@ -134,7 +135,7 @@ class AsyncProcess {
    */
   public static final String HBASE_CLIENT_MAX_SUBMIT_HEAPSIZE = 
"hbase.client.max.submit.heapsize";
   /**
-   * Default value of {@link #HBASE_CLIENT_MAX_SUBMIT_HEAPSIZE}.
+   * Default value of #HBASE_CLIENT_MAX_SUBMIT_HEAPSIZE
    */
   public static final long DEFAULT_HBASE_CLIENT_MAX_SUBMIT_HEAPSIZE = 
DEFAULT_HBASE_CLIENT_MAX_PERREQUEST_HEAPSIZE;
 
@@ -306,7 +307,7 @@ class AsyncProcess {
   }
 
   /**
-   * See {@link #submit(ExecutorService, TableName, RowAccess, boolean, 
Batch.Callback, boolean)}.
+   * See #submit(ExecutorService, TableName, RowAccess, boolean, 
Batch.Callback, boolean).
    * Uses default ExecutorService for this AP (must have been created with 
one).
    */
   public <CResult> AsyncRequestFuture submit(TableName tableName,
@@ -740,7 +741,7 @@ class AsyncProcess {
   /**
    * Provide a way to control the flow of rows iteration.
    */
-  @VisibleForTesting
+  // Visible for Testing. Adding @VisibleForTesting here doesn't work for some 
reason.
   interface RowChecker {
     enum ReturnCode {
       /**

http://git-wip-us.apache.org/repos/asf/hbase/blob/17d4b70d/hbase-client/src/main/java/org/apache/hadoop/hbase/client/AsyncRequestFutureImpl.java
----------------------------------------------------------------------
diff --git 
a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/AsyncRequestFutureImpl.java
 
b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/AsyncRequestFutureImpl.java
index c6b2a53..3894d58 100644
--- 
a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/AsyncRequestFutureImpl.java
+++ 
b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/AsyncRequestFutureImpl.java
@@ -33,8 +33,8 @@ import 
org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.hbase.client.backoff.ServerStatistics;
 import org.apache.hadoop.hbase.client.coprocessor.Batch;
 import org.apache.hadoop.hbase.exceptions.ClientExceptionsUtil;
-import org.apache.hadoop.hbase.protobuf.ProtobufUtil;
-import org.apache.hadoop.hbase.protobuf.generated.ClientProtos;
+import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;
+import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos;
 import org.apache.hadoop.hbase.util.Bytes;
 import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;
 import org.apache.htrace.Trace;
@@ -1284,7 +1284,6 @@ class AsyncRequestFutureImpl<CResult> implements 
AsyncRequestFuture {
   private MultiServerCallable<Row> createCallable(final ServerName server,
                                                     TableName tableName, final 
MultiAction<Row> multi) {
     return new MultiServerCallable<Row>(asyncProcess.connection, tableName, 
server,
-        asyncProcess.rpcFactory, multi);
+        multi, asyncProcess.rpcFactory.newController());
   }
-
 }
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/hbase/blob/17d4b70d/hbase-client/src/main/java/org/apache/hadoop/hbase/client/CancellableRegionServerCallable.java
----------------------------------------------------------------------
diff --git 
a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/CancellableRegionServerCallable.java
 
b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/CancellableRegionServerCallable.java
index 0a6e10f..69f5b55 100644
--- 
a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/CancellableRegionServerCallable.java
+++ 
b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/CancellableRegionServerCallable.java
@@ -17,11 +17,14 @@
 package org.apache.hadoop.hbase.client;
 
 import java.io.IOException;
+import java.io.InterruptedIOException;
 
 import org.apache.hadoop.hbase.DoNotRetryIOException;
+import org.apache.hadoop.hbase.ServerName;
 import org.apache.hadoop.hbase.TableName;
 import org.apache.hadoop.hbase.classification.InterfaceAudience;
-import org.apache.hadoop.hbase.ipc.RpcControllerFactory;
+import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos;
+import org.apache.hadoop.hbase.shaded.com.google.protobuf.RpcController;
 
 /**
  * This class is used to unify HTable calls with AsyncProcess Framework. 
HTable can use
@@ -29,13 +32,13 @@ import org.apache.hadoop.hbase.ipc.RpcControllerFactory;
  * RegionServerCallable and implements Cancellable.
  */
 @InterfaceAudience.Private
-abstract class CancellableRegionServerCallable<T> extends 
RegionServerCallable<T> implements
-Cancellable {
+abstract class CancellableRegionServerCallable<T> extends 
ClientServiceCallable<T> implements
+    Cancellable {
   private final RetryingTimeTracker tracker = new RetryingTimeTracker();
 
   CancellableRegionServerCallable(Connection connection, TableName tableName, 
byte[] row,
-      RpcControllerFactory rpcControllerFactory) {
-    super(connection, rpcControllerFactory, tableName, row);
+      RpcController rpcController) {
+    super(connection, tableName, row, rpcController);
   }
 
   /* Override so can mess with the callTimeout.
@@ -44,6 +47,10 @@ Cancellable {
    */
   @Override
   public T call(int callTimeout) throws IOException {
+    if (isCancelled()) return null;
+    if (Thread.interrupted()) {
+      throw new InterruptedIOException();
+    }
     // It is expected (it seems) that tracker.start can be called multiple 
times (on each trip
     // through the call when retrying). Also, we can call start and no need of 
a stop.
     this.tracker.start();
@@ -55,6 +62,20 @@ Cancellable {
   }
 
   @Override
+  public void prepare(boolean reload) throws IOException {
+    if (isCancelled()) return;
+    if (Thread.interrupted()) {
+      throw new InterruptedIOException();
+    }
+    super.prepare(reload);
+  }
+
+  @Override
+  protected void setStubByServiceName(ServerName serviceName) throws 
IOException {
+    setStub(getConnection().getClient(serviceName));
+  }
+
+  @Override
   public void cancel() {
     getRpcController().startCancel();
   }
@@ -63,4 +84,32 @@ Cancellable {
   public boolean isCancelled() {
     return getRpcController().isCanceled();
   }
+
+  protected ClientProtos.MultiResponse doMulti(ClientProtos.MultiRequest 
request)
+  throws org.apache.hadoop.hbase.shaded.com.google.protobuf.ServiceException {
+    return getStub().multi(getRpcController(), request);
+  }
+
+  protected ClientProtos.ScanResponse doScan(ClientProtos.ScanRequest request)
+  throws org.apache.hadoop.hbase.shaded.com.google.protobuf.ServiceException {
+    return getStub().scan(getRpcController(), request);
+  }
+
+  protected ClientProtos.PrepareBulkLoadResponse doPrepareBulkLoad(
+      ClientProtos.PrepareBulkLoadRequest request)
+  throws org.apache.hadoop.hbase.shaded.com.google.protobuf.ServiceException {
+    return getStub().prepareBulkLoad(getRpcController(), request);
+  }
+
+  protected ClientProtos.BulkLoadHFileResponse doBulkLoadHFile(
+      ClientProtos.BulkLoadHFileRequest request)
+  throws org.apache.hadoop.hbase.shaded.com.google.protobuf.ServiceException {
+    return getStub().bulkLoadHFile(getRpcController(), request);
+  }
+
+  protected ClientProtos.CleanupBulkLoadResponse doCleanupBulkLoad(
+      ClientProtos.CleanupBulkLoadRequest request)
+  throws org.apache.hadoop.hbase.shaded.com.google.protobuf.ServiceException {
+    return getStub().cleanupBulkLoad(getRpcController(), request);
+  }
 }
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/hbase/blob/17d4b70d/hbase-client/src/main/java/org/apache/hadoop/hbase/client/ClientScanner.java
----------------------------------------------------------------------
diff --git 
a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/ClientScanner.java 
b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/ClientScanner.java
index de8bfcc..371a68a 100644
--- 
a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/ClientScanner.java
+++ 
b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/ClientScanner.java
@@ -35,8 +35,8 @@ import 
org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.hbase.exceptions.OutOfOrderScannerNextException;
 import org.apache.hadoop.hbase.exceptions.ScannerResetException;
 import org.apache.hadoop.hbase.ipc.RpcControllerFactory;
-import org.apache.hadoop.hbase.protobuf.ProtobufUtil;
-import org.apache.hadoop.hbase.protobuf.generated.MapReduceProtos;
+import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;
+import org.apache.hadoop.hbase.shaded.protobuf.generated.MapReduceProtos;
 import org.apache.hadoop.hbase.regionserver.RegionServerStoppedException;
 import org.apache.hadoop.hbase.util.Bytes;
 

http://git-wip-us.apache.org/repos/asf/hbase/blob/17d4b70d/hbase-client/src/main/java/org/apache/hadoop/hbase/client/ClientServiceCallable.java
----------------------------------------------------------------------
diff --git 
a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/ClientServiceCallable.java
 
b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/ClientServiceCallable.java
new file mode 100644
index 0000000..5fa8de1
--- /dev/null
+++ 
b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/ClientServiceCallable.java
@@ -0,0 +1,56 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to you under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.hadoop.hbase.client;
+
+import java.io.IOException;
+
+import org.apache.hadoop.hbase.ServerName;
+import org.apache.hadoop.hbase.TableName;
+import org.apache.hadoop.hbase.classification.InterfaceAudience;
+import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos;
+import org.apache.hadoop.hbase.shaded.com.google.protobuf.RpcController;
+
+/**
+ * A RegionServerCallable set to use the Client protocol.
+ * Also includes some utility methods so can hide protobuf references here 
rather than have them
+ * sprinkled about the code base.
+ * @param <T>
+ */
+@InterfaceAudience.Private
+public abstract class ClientServiceCallable<T> extends
+    RegionServerCallable<T, ClientProtos.ClientService.BlockingInterface> {
+  public ClientServiceCallable(Connection connection, TableName tableName, 
byte [] row,
+      RpcController rpcController) {
+    super(connection, tableName, row, rpcController);
+  }
+
+  @Override
+  protected void setStubByServiceName(ServerName serviceName) throws 
IOException {
+    setStub(getConnection().getClient(serviceName));
+  }
+
+  // Below here are simple methods that contain the stub and the rpcController.
+  protected ClientProtos.GetResponse doGet(ClientProtos.GetRequest request)
+  throws org.apache.hadoop.hbase.shaded.com.google.protobuf.ServiceException {
+    return getStub().get(getRpcController(), request);
+  }
+
+  protected ClientProtos.MutateResponse doMutate(ClientProtos.MutateRequest 
request)
+  throws org.apache.hadoop.hbase.shaded.com.google.protobuf.ServiceException {
+    return getStub().mutate(getRpcController(), request);
+  }
+}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/hbase/blob/17d4b70d/hbase-client/src/main/java/org/apache/hadoop/hbase/client/ClientSmallScanner.java
----------------------------------------------------------------------
diff --git 
a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/ClientSmallScanner.java
 
b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/ClientSmallScanner.java
index f13f3f4..b5f373a 100644
--- 
a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/ClientSmallScanner.java
+++ 
b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/ClientSmallScanner.java
@@ -32,10 +32,10 @@ import org.apache.hadoop.hbase.TableName;
 import org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.hbase.client.metrics.ScanMetrics;
 import org.apache.hadoop.hbase.ipc.RpcControllerFactory;
-import org.apache.hadoop.hbase.protobuf.RequestConverter;
-import org.apache.hadoop.hbase.protobuf.ResponseConverter;
-import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.ScanRequest;
-import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.ScanResponse;
+import org.apache.hadoop.hbase.shaded.protobuf.RequestConverter;
+import org.apache.hadoop.hbase.shaded.protobuf.ResponseConverter;
+import 
org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.ScanRequest;
+import 
org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.ScanResponse;
 import org.apache.hadoop.hbase.util.Bytes;
 
 import com.google.common.annotations.VisibleForTesting;
@@ -207,7 +207,7 @@ public class ClientSmallScanner extends ClientSimpleScanner 
{
 
     @Override
     public ScannerCallable getScannerCallableForReplica(int id) {
-      return new SmallScannerCallable((ClusterConnection)connection, 
tableName, getScan(),
+      return new SmallScannerCallable((ClusterConnection)getConnection(), 
getTableName(), getScan(),
           scanMetrics, rpcControllerFactory, getCaching(), id);
     }
   }

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