HBASE-9612 Ability to batch edits destined to different regions -- REVERT

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1527789 13f79535-47bb-0310-9956-ffa450edef68

hbase-client/src/main/java/org/apache/hadoop/hbase/client/ClientSmallScanner.java

@@ -171,7 +171,6 @@ public class ClientSmallScanner extends ClientScanner {
         ScanResponse response = null;
         PayloadCarryingRpcController controller = new PayloadCarryingRpcController();
         try {
-          controller.setPriority(getTableName());
           response = getStub().scan(controller, request);
           return ResponseConverter.getResults(controller.cellScanner(),
               response);

hbase-client/src/main/java/org/apache/hadoop/hbase/client/HBaseAdmin.java

@@ -643,7 +643,6 @@ public class HBaseAdmin implements Abortable, Closeable {
             .getServerName());
         PayloadCarryingRpcController controller = new PayloadCarryingRpcController();
         try {
-          controller.setPriority(tableName);
           ScanResponse response = server.scan(controller, request);
           values = ResponseConverter.getResults(controller.cellScanner(), response);
         } catch (ServiceException se) {

hbase-client/src/main/java/org/apache/hadoop/hbase/client/HTable.java

@@ -961,8 +961,6 @@ public class HTable implements HTableInterface {
         try {
           MultiRequest request = RequestConverter.buildMultiRequest(
             getLocation().getRegionInfo().getRegionName(), rm);
-          PayloadCarryingRpcController pcrc = new PayloadCarryingRpcController();
-          pcrc.setPriority(tableName);
           getStub().multi(null, request);
         } catch (ServiceException se) {
           throw ProtobufUtil.getRemoteException(se);
@@ -989,7 +987,6 @@ public class HTable implements HTableInterface {
             MutateRequest request = RequestConverter.buildMutateRequest(
               getLocation().getRegionInfo().getRegionName(), append);
             PayloadCarryingRpcController rpcController = new PayloadCarryingRpcController();
-            rpcController.setPriority(getTableName());
             MutateResponse response = getStub().mutate(rpcController, request);
             if (!response.hasResult()) return null;
             return ProtobufUtil.toResult(response.getResult(), rpcController.cellScanner());
@@ -1016,10 +1013,9 @@ public class HTable implements HTableInterface {
         try {
           MutateRequest request = RequestConverter.buildMutateRequest(
             getLocation().getRegionInfo().getRegionName(), increment);
-            PayloadCarryingRpcController rpcController = new PayloadCarryingRpcController();
+            PayloadCarryingRpcController rpcContoller = new PayloadCarryingRpcController();
-            rpcController.setPriority(getTableName());
+            MutateResponse response = getStub().mutate(rpcContoller, request);
-            MutateResponse response = getStub().mutate(rpcController, request);
+            return ProtobufUtil.toResult(response.getResult(), rpcContoller.cellScanner());
-            return ProtobufUtil.toResult(response.getResult(), rpcController.cellScanner());
           } catch (ServiceException se) {
             throw ProtobufUtil.getRemoteException(se);
           }
@@ -1078,7 +1074,6 @@ public class HTable implements HTableInterface {
               getLocation().getRegionInfo().getRegionName(), row, family,
               qualifier, amount, durability);
             PayloadCarryingRpcController rpcController = new PayloadCarryingRpcController();
-            rpcController.setPriority(getTableName());
             MutateResponse response = getStub().mutate(rpcController, request);
             Result result =
               ProtobufUtil.toResult(response.getResult(), rpcController.cellScanner());

hbase-client/src/main/java/org/apache/hadoop/hbase/client/MultiServerCallable.java

@@ -24,8 +24,8 @@ import java.util.Map;
 
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.hbase.CellScannable;
-import org.apache.hadoop.hbase.HRegionLocation;
 import org.apache.hadoop.hbase.TableName;
+import org.apache.hadoop.hbase.HRegionLocation;
 import org.apache.hadoop.hbase.ipc.PayloadCarryingRpcController;
 import org.apache.hadoop.hbase.protobuf.ProtobufUtil;
 import org.apache.hadoop.hbase.protobuf.RequestConverter;
@@ -84,11 +84,8 @@ class MultiServerCallable<R> extends RegionServerCallable<MultiResponse> {
               multiRequest = RequestConverter.buildMultiRequest(regionName, rms);
             }
             // Carry the cells if any over the proxy/pb Service interface using the payload
-            // carrying rpc controller.  Also set priority on this controller so available down
+            // carrying rpc controller.
-            // in RpcClient when we go to craft the request header.
+            getStub().multi(new PayloadCarryingRpcController(cells), multiRequest);
-            PayloadCarryingRpcController pcrc = new PayloadCarryingRpcController(cells);
-            pcrc.setPriority(getTableName());
-            getStub().multi(pcrc, multiRequest);
             // This multi call does not return results.
             response.add(regionName, action.getOriginalIndex(), Result.EMPTY_RESULT);
           } catch (ServiceException se) {
@@ -116,7 +113,6 @@ class MultiServerCallable<R> extends RegionServerCallable<MultiResponse> {
           // Controller optionally carries cell data over the proxy/service boundary and also
           // optionally ferries cell response data back out again.
           PayloadCarryingRpcController controller = new PayloadCarryingRpcController(cells);
-          controller.setPriority(getTableName());
           ClientProtos.MultiResponse responseProto = getStub().multi(controller, multiRequest);
           results = ResponseConverter.getResults(responseProto, controller.cellScanner());
         } catch (ServiceException se) {

hbase-client/src/main/java/org/apache/hadoop/hbase/client/ScannerCallable.java

@@ -163,7 +163,6 @@ public class ScannerCallable extends RegionServerCallable<Result[]> {
           ScanResponse response = null;
           PayloadCarryingRpcController controller = new PayloadCarryingRpcController();
           try {
-            controller.setPriority(getTableName());
             response = getStub().scan(controller, request);
             // Client and RS maintain a nextCallSeq number during the scan. Every next() call
             // from client to server will increment this number in both sides. Client passes this

hbase-client/src/main/java/org/apache/hadoop/hbase/ipc/PayloadCarryingRpcController.java

@@ -23,8 +23,7 @@ import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.hbase.CellScannable;
 import org.apache.hadoop.hbase.CellScanner;
 import org.apache.hadoop.hbase.CellUtil;
-import org.apache.hadoop.hbase.HConstants;
+
-import org.apache.hadoop.hbase.TableName;
 
 import com.google.protobuf.RpcCallback;
 import com.google.protobuf.RpcController;
@@ -37,15 +36,6 @@ import com.google.protobuf.RpcController;
  */
 @InterfaceAudience.Private
 public class PayloadCarryingRpcController implements RpcController, CellScannable {
-  /**
-   * Priority to set on this request.  Set it here in controller so available composing the
-   * request.  This is the ordained way of setting priorities going forward.  We will be
-   * undoing the old annotation-based mechanism.
-   */
-  // Currently only multi call makes use of this.  Eventually this should be only way to set
-  // priority.
-  private int priority = 0;
-
   // TODO: Fill out the rest of this class methods rather than return UnsupportedOperationException
 
   /**
@@ -113,26 +103,4 @@ public class PayloadCarryingRpcController implements RpcController, CellScannabl
   public void startCancel() {
     throw new UnsupportedOperationException();
   }
-
-  /**
-   * @param priority Priority for this request; should fall roughly in the range
-   * {@link HConstants#NORMAL_QOS} to {@link HConstants#HIGH_QOS}
-   */
-  public void setPriority(int priority) {
-    this.priority = priority;
-  }
-
-  /**
-   * @param tn Set priority based off the table we are going against.
-   */
-  public void setPriority(final TableName tn) {
-    this.priority = tn != null && tn.isSystemTable()? HConstants.HIGH_QOS: HConstants.NORMAL_QOS;
-  }
-
-  /**
-   * @return The priority of this request
-   */
-  public int getPriority() {
-    return priority;
-  }
 }

hbase-client/src/main/java/org/apache/hadoop/hbase/ipc/RpcClient.java

@@ -1002,10 +1002,9 @@ public class RpcClient {
      * Note: this is not called from the Connection thread, but by other
      * threads.
      * @param call
-     * @param priority
      * @see #readResponse()
      */
-    protected void writeRequest(Call call, final int priority) {
+    protected void writeRequest(Call call) {
       if (shouldCloseConnection.get()) return;
       try {
         RequestHeader.Builder builder = RequestHeader.newBuilder();
@@ -1023,8 +1022,6 @@ public class RpcClient {
           cellBlockBuilder.setLength(cellBlock.limit());
           builder.setCellBlockMeta(cellBlockBuilder.build());
         }
-        // Only pass priority if there one.  Let zero be same as no priority.
-        if (priority != 0) builder.setPriority(priority);
         //noinspection SynchronizeOnNonFinalField
         RequestHeader header = builder.build();
         synchronized (this.out) { // FindBugs IS2_INCONSISTENT_SYNC
@@ -1383,12 +1380,6 @@ public class RpcClient {
     }
   }
 
-  Pair<Message, CellScanner> call(MethodDescriptor md, Message param, CellScanner cells,
-      Message returnType, User ticket, InetSocketAddress addr, int rpcTimeout)
-  throws InterruptedException, IOException {
-    return call(md, param, cells, returnType, ticket, addr, rpcTimeout, HConstants.NORMAL_QOS);
-  }
-
   /** Make a call, passing <code>param</code>, to the IPC server running at
    * <code>address</code> which is servicing the <code>protocol</code> protocol,
    * with the <code>ticket</code> credentials, returning the value.
@@ -1409,12 +1400,12 @@ public class RpcClient {
    */
   Pair<Message, CellScanner> call(MethodDescriptor md, Message param, CellScanner cells,
       Message returnType, User ticket, InetSocketAddress addr,
-      int rpcTimeout, int priority)
+      int rpcTimeout)
   throws InterruptedException, IOException {
     Call call = new Call(md, param, cells, returnType);
     Connection connection =
       getConnection(ticket, call, addr, rpcTimeout, this.codec, this.compressor);
-    connection.writeRequest(call, priority);                 // send the parameter
+    connection.writeRequest(call);                 // send the parameter
     boolean interrupted = false;
     //noinspection SynchronizationOnLocalVariableOrMethodParameter
     synchronized (call) {
@@ -1641,8 +1632,7 @@ public class RpcClient {
     }
     Pair<Message, CellScanner> val = null;
     try {
-      val = call(md, param, cells, returnType, ticket, isa, rpcTimeout,
+      val = call(md, param, cells, returnType, ticket, isa, rpcTimeout);
-        pcrc != null? pcrc.getPriority(): HConstants.NORMAL_QOS);
       if (pcrc != null) {
         // Shove the results into controller so can be carried across the proxy/pb service void.
         if (val.getSecond() != null) pcrc.setCellScanner(val.getSecond());

hbase-client/src/main/java/org/apache/hadoop/hbase/protobuf/ProtobufUtil.java

@@ -2257,11 +2257,11 @@ public final class ProtobufUtil {
           ", row=" + getStringForByteString(r.getGet().getRow());
     } else if (m instanceof ClientProtos.MultiRequest) {
       ClientProtos.MultiRequest r = (ClientProtos.MultiRequest) m;
-      ClientProtos.RegionMutation rm = r.getRegionMutationList().get(0);
+      ClientProtos.MultiAction action = r.getActionList().get(0);
-      return "region= " + getStringForByteString(rm.getRegion().getValue()) +
+      return "region= " + getStringForByteString(r.getRegion().getValue()) +
-          ", for " + r.getRegionMutationCount() +
+          ", for " + r.getActionCount() +
-          " actions and 1st row key=" + getStringForByteString(rm.getMutationCount() > 0?
+          " actions and 1st row key=" + getStringForByteString(action.hasMutation() ?
-          rm.getMutation(0).getRow(): ByteString.EMPTY);
+          action.getMutation().getRow() : action.getGet().getRow());
     } else if (m instanceof ClientProtos.MutateRequest) {
       ClientProtos.MutateRequest r = (ClientProtos.MutateRequest) m;
       return "region= " + getStringForByteString(r.getRegion().getValue()) +

hbase-client/src/main/java/org/apache/hadoop/hbase/protobuf/RequestConverter.java

@@ -63,6 +63,7 @@ import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.BulkLoadHFileRequ
 import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.Column;
 import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.Condition;
 import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.GetRequest;
+import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.MultiAction;
 import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.MultiGetRequest;
 import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.MultiRequest;
 import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.MutateRequest;
@@ -70,7 +71,6 @@ import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.MutationProto;
 import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.MutationProto.ColumnValue;
 import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.MutationProto.ColumnValue.QualifierValue;
 import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.MutationProto.MutationType;
-import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.RegionMutation;
 import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.ScanRequest;
 import org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.CompareType;
 import org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.RegionSpecifier;
@@ -365,11 +365,10 @@ public final class RequestConverter {
    * @return a multi request
    * @throws IOException
    */
-  public static MultiRequest buildMultiRequest(final byte [] regionName,
+  public static MultiRequest buildMultiRequest(final byte[] regionName,
       final RowMutations rowMutations)
   throws IOException {
-    RegionMutation.Builder builder =
+    MultiRequest.Builder builder = getMultiRequestBuilderWithRegionAndAtomicSet(regionName, true);
-        getRegionMutationBuilderWithRegionAndAtomicSet(regionName, true);
     for (Mutation mutation: rowMutations.getMutations()) {
       MutationType mutateType = null;
       if (mutation instanceof Put) {
@@ -381,9 +380,9 @@ public final class RequestConverter {
           mutation.getClass().getName());
       }
       MutationProto mp = ProtobufUtil.toMutation(mutateType, mutation);
-      builder.addMutation(mp);
+      builder.addAction(MultiAction.newBuilder().setMutation(mp).build());
     }
-    return createMultiRequest(builder.build());
+    return builder.build();
   }
 
   /**
@@ -399,8 +398,7 @@ public final class RequestConverter {
   public static MultiRequest buildNoDataMultiRequest(final byte[] regionName,
       final RowMutations rowMutations, final List<CellScannable> cells)
   throws IOException {
-    RegionMutation.Builder builder =
+    MultiRequest.Builder builder = getMultiRequestBuilderWithRegionAndAtomicSet(regionName, true);
-      getRegionMutationBuilderWithRegionAndAtomicSet(regionName, true);
     for (Mutation mutation: rowMutations.getMutations()) {
       MutationType type = null;
       if (mutation instanceof Put) {
@@ -413,18 +411,14 @@ public final class RequestConverter {
       }
       MutationProto mp = ProtobufUtil.toMutationNoData(type, mutation);
       cells.add(mutation);
-      builder.addMutation(mp);
+      builder.addAction(MultiAction.newBuilder().setMutation(mp).build());
     }
-    return createMultiRequest(builder.build());
+    return builder.build();
   }
 
-  private static MultiRequest createMultiRequest(final RegionMutation rm) {
+  private static MultiRequest.Builder getMultiRequestBuilderWithRegionAndAtomicSet(final byte [] regionName,
-    return MultiRequest.newBuilder().addRegionMutation(rm).build();
+      final boolean atomic) {
-  }
+    MultiRequest.Builder builder = MultiRequest.newBuilder();
-
-  private static RegionMutation.Builder getRegionMutationBuilderWithRegionAndAtomicSet(
-      final byte [] regionName, final boolean atomic) {
-    RegionMutation.Builder builder = RegionMutation.newBuilder();
     RegionSpecifier region = buildRegionSpecifier(RegionSpecifierType.REGION_NAME, regionName);
     builder.setRegion(region);
     return builder.setAtomic(atomic);
@@ -526,27 +520,29 @@ public final class RequestConverter {
   public static <R> MultiRequest buildMultiRequest(final byte[] regionName,
       final List<Action<R>> actions)
   throws IOException {
-    RegionMutation.Builder builder =
+    MultiRequest.Builder builder = getMultiRequestBuilderWithRegionAndAtomicSet(regionName, false);
-      getRegionMutationBuilderWithRegionAndAtomicSet(regionName, false);
     for (Action<R> action: actions) {
+      MultiAction.Builder protoAction = MultiAction.newBuilder();
       Row row = action.getAction();
       if (row instanceof Get) {
-        throw new UnsupportedOperationException("Removed");
+        protoAction.setGet(ProtobufUtil.toGet((Get)row));
       } else if (row instanceof Put) {
-        builder.addMutation(ProtobufUtil.toMutation(MutationType.PUT, (Put)row));
+        protoAction.setMutation(ProtobufUtil.toMutation(MutationType.PUT, (Put)row));
       } else if (row instanceof Delete) {
-        builder.addMutation(ProtobufUtil.toMutation(MutationType.DELETE, (Delete)row));
+        protoAction.setMutation(ProtobufUtil.toMutation(MutationType.DELETE, (Delete)row));
       } else if (row instanceof Append) {
-        builder.addMutation(ProtobufUtil.toMutation(MutationType.APPEND, (Append)row));
+        protoAction.setMutation(ProtobufUtil.toMutation(MutationType.APPEND, (Append)row));
       } else if (row instanceof Increment) {
-        builder.addMutation(ProtobufUtil.toMutation((Increment)row));
+        protoAction.setMutation(ProtobufUtil.toMutation((Increment)row));
       } else if (row instanceof RowMutations) {
         continue; // ignore RowMutations
       } else {
-        throw new DoNotRetryIOException("Multi doesn't support " + row.getClass().getName());
+        throw new DoNotRetryIOException(
+          "multi doesn't support " + row.getClass().getName());
       }
+      builder.addAction(protoAction.build());
     }
-    return createMultiRequest(builder.build());
+    return builder.build();
   }
 
   /**
@@ -568,16 +564,17 @@ public final class RequestConverter {
   public static <R> MultiRequest buildNoDataMultiRequest(final byte[] regionName,
       final List<Action<R>> actions, final List<CellScannable> cells)
   throws IOException {
-    RegionMutation.Builder builder =
+    MultiRequest.Builder builder = getMultiRequestBuilderWithRegionAndAtomicSet(regionName, false);
-        getRegionMutationBuilderWithRegionAndAtomicSet(regionName, false);
     for (Action<R> action: actions) {
+      MultiAction.Builder protoAction = MultiAction.newBuilder();
       Row row = action.getAction();
       if (row instanceof Get) {
-        throw new UnsupportedOperationException("Removed");
+        // Gets are carried by protobufs.
+        protoAction.setGet(ProtobufUtil.toGet((Get)row));
       } else if (row instanceof Put) {
         Put p = (Put)row;
         cells.add(p);
-        builder.addMutation(ProtobufUtil.toMutationNoData(MutationType.PUT, p));
+        protoAction.setMutation(ProtobufUtil.toMutationNoData(MutationType.PUT, p));
       } else if (row instanceof Delete) {
         Delete d = (Delete)row;
         int size = d.size();
@@ -588,25 +585,26 @@ public final class RequestConverter {
         // metadata only in the pb and then send the kv along the side in cells.
         if (size > 0) {
           cells.add(d);
-          builder.addMutation(ProtobufUtil.toMutationNoData(MutationType.DELETE, d));
+          protoAction.setMutation(ProtobufUtil.toMutationNoData(MutationType.DELETE, d));
         } else {
-          builder.addMutation(ProtobufUtil.toMutation(MutationType.DELETE, d));
+          protoAction.setMutation(ProtobufUtil.toMutation(MutationType.DELETE, d));
         }
       } else if (row instanceof Append) {
         Append a = (Append)row;
         cells.add(a);
-        builder.addMutation(ProtobufUtil.toMutationNoData(MutationType.APPEND, a));
+        protoAction.setMutation(ProtobufUtil.toMutationNoData(MutationType.APPEND, a));
       } else if (row instanceof Increment) {
         Increment i = (Increment)row;
         cells.add(i);
-        builder.addMutation(ProtobufUtil.toMutationNoData(MutationType.INCREMENT, i));
+        protoAction.setMutation(ProtobufUtil.toMutationNoData(MutationType.INCREMENT, i));
       } else if (row instanceof RowMutations) {
         continue; // ignore RowMutations
       } else {
         throw new DoNotRetryIOException("Multi doesn't support " + row.getClass().getName());
       }
+      builder.addAction(protoAction.build());
     }
-    return createMultiRequest(builder.build());
+    return builder.build();
   }
 
 // End utilities for Client

hbase-client/src/main/java/org/apache/hadoop/hbase/protobuf/ResponseConverter.java

@@ -38,10 +38,9 @@ import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.GetServerInfoRespo
 import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.OpenRegionResponse;
 import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.RollWALWriterResponse;
 import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.ServerInfo;
-import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.RegionMutationResult;
+import org.apache.hadoop.hbase.protobuf.generated.ClientProtos;
-import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.ResultOrException;
+import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.ActionResult;
 import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.ScanResponse;
-import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.MultiResponse;
 import org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.NameBytesPair;
 import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.EnableCatalogJanitorResponse;
 import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.RunCatalogScanResponse;
@@ -74,20 +73,20 @@ public final class ResponseConverter {
    * @return the results that were in the MultiResponse (a Result or an Exception).
    * @throws IOException
    */
-  public static List<Object> getResults(final MultiResponse proto,
+  public static List<Object> getResults(final ClientProtos.MultiResponse proto,
       final CellScanner cells)
   throws IOException {
     List<Object> results = new ArrayList<Object>();
-    for (RegionMutationResult result: proto.getRegionMutationResultList()) {
+    List<ActionResult> resultList = proto.getResultList();
-      for (ResultOrException resultOrException: result.getResultOrExceptionList()) {
+    for (int i = 0, n = resultList.size(); i < n; i++) {
-        if (resultOrException.hasException()) {
+      ActionResult result = resultList.get(i);
-          results.add(ProtobufUtil.toException(resultOrException.getException()));
+      if (result.hasException()) {
-        } else if (resultOrException.hasResult()) {
+        results.add(ProtobufUtil.toException(result.getException()));
-          results.add(ProtobufUtil.toResult(resultOrException.getResult(), cells));
+      } else if (result.hasValue()) {
-        } else {
+        ClientProtos.Result value = result.getValue();
-          // Just a placeholder
+        results.add(ProtobufUtil.toResult(value, cells));
-          results.add(new Result());
+      } else {
-        }
+        results.add(new Result());
       }
     }
     return results;
@@ -99,22 +98,14 @@ public final class ResponseConverter {
    * @param t
    * @return an action result
    */
-  public static ResultOrException buildActionResult(final Throwable t) {
+  public static ActionResult buildActionResult(final Throwable t) {
-    ResultOrException.Builder builder = ResultOrException.newBuilder();
+    ActionResult.Builder builder = ActionResult.newBuilder();
-    builder.setException(buildException(t));
-    return builder.build();
-  }
-
-  /**
-   * @param t
-   * @return NameValuePair of the exception name to stringified version os exception.
-   */
-  public static NameBytesPair buildException(final Throwable t) {
     NameBytesPair.Builder parameterBuilder = NameBytesPair.newBuilder();
     parameterBuilder.setName(t.getClass().getName());
     parameterBuilder.setValue(
       ByteString.copyFromUtf8(StringUtils.stringifyException(t)));
-    return parameterBuilder.build();
+    builder.setException(parameterBuilder.build());
+    return builder.build();
   }
 
   /**

hbase-protocol/README.txt

@@ -25,6 +25,7 @@ terminal and hit return -- the protoc compiler runs fast):
   do
     protoc -I$PROTO_DIR --java_out=$JAVA_DIR $PROTO_FILE
   done
+  ll $JAVA_DIR/org/apache/hadoop/hbase/protobuf/generated
 
 After you've done the above, check it in and then check it in (or post a patch
 on a JIRA with your definition file changes and the generated files).

hbase-protocol/src/main/java/org/apache/hadoop/hbase/protobuf/generated/RPCProtos.java

@@ -3662,26 +3662,6 @@ public final class RPCProtos {
      * </pre>
      */
     org.apache.hadoop.hbase.protobuf.generated.RPCProtos.CellBlockMetaOrBuilder getCellBlockMetaOrBuilder();
-
-    // optional uint32 priority = 6;
-    /**
-     * <code>optional uint32 priority = 6;</code>
-     *
-     * <pre>
-     * 0 is NORMAL priority.  100 is HIGH.  If no priority, treat it as NORMAL.
-     * See HConstants.
-     * </pre>
-     */
-    boolean hasPriority();
-    /**
-     * <code>optional uint32 priority = 6;</code>
-     *
-     * <pre>
-     * 0 is NORMAL priority.  100 is HIGH.  If no priority, treat it as NORMAL.
-     * See HConstants.
-     * </pre>
-     */
-    int getPriority();
   }
   /**
    * Protobuf type {@code RequestHeader}
@@ -3779,11 +3759,6 @@ public final class RPCProtos {
               bitField0_ |= 0x00000010;
               break;
             }
-            case 48: {
-              bitField0_ |= 0x00000020;
-              priority_ = input.readUInt32();
-              break;
-            }
           }
         }
       } catch (com.google.protobuf.InvalidProtocolBufferException e) {
@@ -3971,39 +3946,12 @@ public final class RPCProtos {
       return cellBlockMeta_;
     }
 
-    // optional uint32 priority = 6;
-    public static final int PRIORITY_FIELD_NUMBER = 6;
-    private int priority_;
-    /**
-     * <code>optional uint32 priority = 6;</code>
-     *
-     * <pre>
-     * 0 is NORMAL priority.  100 is HIGH.  If no priority, treat it as NORMAL.
-     * See HConstants.
-     * </pre>
-     */
-    public boolean hasPriority() {
-      return ((bitField0_ & 0x00000020) == 0x00000020);
-    }
-    /**
-     * <code>optional uint32 priority = 6;</code>
-     *
-     * <pre>
-     * 0 is NORMAL priority.  100 is HIGH.  If no priority, treat it as NORMAL.
-     * See HConstants.
-     * </pre>
-     */
-    public int getPriority() {
-      return priority_;
-    }
-
     private void initFields() {
       callId_ = 0;
       traceInfo_ = org.apache.hadoop.hbase.protobuf.generated.TracingProtos.RPCTInfo.getDefaultInstance();
       methodName_ = "";
       requestParam_ = false;
       cellBlockMeta_ = org.apache.hadoop.hbase.protobuf.generated.RPCProtos.CellBlockMeta.getDefaultInstance();
-      priority_ = 0;
     }
     private byte memoizedIsInitialized = -1;
     public final boolean isInitialized() {
@@ -4032,9 +3980,6 @@ public final class RPCProtos {
       if (((bitField0_ & 0x00000010) == 0x00000010)) {
         output.writeMessage(5, cellBlockMeta_);
       }
-      if (((bitField0_ & 0x00000020) == 0x00000020)) {
-        output.writeUInt32(6, priority_);
-      }
       getUnknownFields().writeTo(output);
     }
 
@@ -4064,10 +4009,6 @@ public final class RPCProtos {
         size += com.google.protobuf.CodedOutputStream
           .computeMessageSize(5, cellBlockMeta_);
       }
-      if (((bitField0_ & 0x00000020) == 0x00000020)) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeUInt32Size(6, priority_);
-      }
       size += getUnknownFields().getSerializedSize();
       memoizedSerializedSize = size;
       return size;
@@ -4116,11 +4057,6 @@ public final class RPCProtos {
         result = result && getCellBlockMeta()
             .equals(other.getCellBlockMeta());
       }
-      result = result && (hasPriority() == other.hasPriority());
-      if (hasPriority()) {
-        result = result && (getPriority()
-            == other.getPriority());
-      }
       result = result &&
           getUnknownFields().equals(other.getUnknownFields());
       return result;
@@ -4154,10 +4090,6 @@ public final class RPCProtos {
         hash = (37 * hash) + CELL_BLOCK_META_FIELD_NUMBER;
         hash = (53 * hash) + getCellBlockMeta().hashCode();
       }
-      if (hasPriority()) {
-        hash = (37 * hash) + PRIORITY_FIELD_NUMBER;
-        hash = (53 * hash) + getPriority();
-      }
       hash = (29 * hash) + getUnknownFields().hashCode();
       memoizedHashCode = hash;
       return hash;
@@ -4291,8 +4223,6 @@ public final class RPCProtos {
           cellBlockMetaBuilder_.clear();
         }
         bitField0_ = (bitField0_ & ~0x00000010);
-        priority_ = 0;
-        bitField0_ = (bitField0_ & ~0x00000020);
         return this;
       }
 
@@ -4349,10 +4279,6 @@ public final class RPCProtos {
         } else {
           result.cellBlockMeta_ = cellBlockMetaBuilder_.build();
         }
-        if (((from_bitField0_ & 0x00000020) == 0x00000020)) {
-          to_bitField0_ |= 0x00000020;
-        }
-        result.priority_ = priority_;
         result.bitField0_ = to_bitField0_;
         onBuilt();
         return result;
@@ -4386,9 +4312,6 @@ public final class RPCProtos {
         if (other.hasCellBlockMeta()) {
           mergeCellBlockMeta(other.getCellBlockMeta());
         }
-        if (other.hasPriority()) {
-          setPriority(other.getPriority());
-        }
         this.mergeUnknownFields(other.getUnknownFields());
         return this;
       }
@@ -4858,59 +4781,6 @@ public final class RPCProtos {
         return cellBlockMetaBuilder_;
       }
 
-      // optional uint32 priority = 6;
-      private int priority_ ;
-      /**
-       * <code>optional uint32 priority = 6;</code>
-       *
-       * <pre>
-       * 0 is NORMAL priority.  100 is HIGH.  If no priority, treat it as NORMAL.
-       * See HConstants.
-       * </pre>
-       */
-      public boolean hasPriority() {
-        return ((bitField0_ & 0x00000020) == 0x00000020);
-      }
-      /**
-       * <code>optional uint32 priority = 6;</code>
-       *
-       * <pre>
-       * 0 is NORMAL priority.  100 is HIGH.  If no priority, treat it as NORMAL.
-       * See HConstants.
-       * </pre>
-       */
-      public int getPriority() {
-        return priority_;
-      }
-      /**
-       * <code>optional uint32 priority = 6;</code>
-       *
-       * <pre>
-       * 0 is NORMAL priority.  100 is HIGH.  If no priority, treat it as NORMAL.
-       * See HConstants.
-       * </pre>
-       */
-      public Builder setPriority(int value) {
-        bitField0_ |= 0x00000020;
-        priority_ = value;
-        onChanged();
-        return this;
-      }
-      /**
-       * <code>optional uint32 priority = 6;</code>
-       *
-       * <pre>
-       * 0 is NORMAL priority.  100 is HIGH.  If no priority, treat it as NORMAL.
-       * See HConstants.
-       * </pre>
-       */
-      public Builder clearPriority() {
-        bitField0_ = (bitField0_ & ~0x00000020);
-        priority_ = 0;
-        onChanged();
-        return this;
-      }
-
       // @@protoc_insertion_point(builder_scope:RequestHeader)
     }
 
@@ -5927,15 +5797,15 @@ public final class RPCProtos {
       "\001(\r\"|\n\021ExceptionResponse\022\034\n\024exception_cl" +
       "ass_name\030\001 \001(\t\022\023\n\013stack_trace\030\002 \001(\t\022\020\n\010h" +
       "ostname\030\003 \001(\t\022\014\n\004port\030\004 \001(\005\022\024\n\014do_not_re",
-      "try\030\005 \001(\010\"\246\001\n\rRequestHeader\022\017\n\007call_id\030\001" +
+      "try\030\005 \001(\010\"\224\001\n\rRequestHeader\022\017\n\007call_id\030\001" +
       " \001(\r\022\035\n\ntrace_info\030\002 \001(\0132\t.RPCTInfo\022\023\n\013m" +
       "ethod_name\030\003 \001(\t\022\025\n\rrequest_param\030\004 \001(\010\022" +
       "\'\n\017cell_block_meta\030\005 \001(\0132\016.CellBlockMeta" +
-      "\022\020\n\010priority\030\006 \001(\r\"q\n\016ResponseHeader\022\017\n\007" +
+      "\"q\n\016ResponseHeader\022\017\n\007call_id\030\001 \001(\r\022%\n\te" +
-      "call_id\030\001 \001(\r\022%\n\texception\030\002 \001(\0132\022.Excep" +
+      "xception\030\002 \001(\0132\022.ExceptionResponse\022\'\n\017ce" +
-      "tionResponse\022\'\n\017cell_block_meta\030\003 \001(\0132\016." +
+      "ll_block_meta\030\003 \001(\0132\016.CellBlockMetaB<\n*o" +
-      "CellBlockMetaB<\n*org.apache.hadoop.hbase" +
+      "rg.apache.hadoop.hbase.protobuf.generate" +
-      ".protobuf.generatedB\tRPCProtosH\001\240\001\001"
+      "dB\tRPCProtosH\001\240\001\001"
     };
     com.google.protobuf.Descriptors.FileDescriptor.InternalDescriptorAssigner assigner =
       new com.google.protobuf.Descriptors.FileDescriptor.InternalDescriptorAssigner() {
@@ -5971,7 +5841,7 @@ public final class RPCProtos {
           internal_static_RequestHeader_fieldAccessorTable = new
             com.google.protobuf.GeneratedMessage.FieldAccessorTable(
               internal_static_RequestHeader_descriptor,
-              new java.lang.String[] { "CallId", "TraceInfo", "MethodName", "RequestParam", "CellBlockMeta", "Priority", });
+              new java.lang.String[] { "CallId", "TraceInfo", "MethodName", "RequestParam", "CellBlockMeta", });
           internal_static_ResponseHeader_descriptor =
             getDescriptor().getMessageTypes().get(5);
           internal_static_ResponseHeader_fieldAccessorTable = new

hbase-protocol/src/main/protobuf/Client.proto

@@ -319,41 +319,42 @@ message CoprocessorServiceResponse {
 }
 
 /**
- * Mutations to run against a Region.
+ * An action that is part of MultiRequest.
+ * This is a union type - exactly one of the fields will be set.
  */
-message RegionMutation {
+message MultiAction {
-  required RegionSpecifier region = 1;
+  optional MutationProto mutation = 1;
-  // When set, run mutations as atomic unit.
+  optional Get get = 2;
-  optional bool atomic = 2;
-  repeated MutationProto mutation = 3;
 }
 
 /**
- * Either a Result or an Exception NameBytesPair (keyed by
+ * An individual action result. The result will in the
- * exception name whose value is the exception stringified)
+ * same order as the action in the request. If an action
- * or maybe empty if no result and no exception.
+ * returns a value, it is set in value field. If it doesn't
+ * return anything, the result will be empty. If an action
+ * fails to execute due to any exception, the exception
+ * is returned as a stringified parameter.
  */
-message ResultOrException {
+message ActionResult {
-  optional Result result = 1;
+  optional Result value = 1;
   optional NameBytesPair exception = 2;
 }
 
 /**
- * The result of a RegionMutation.
+ * You can execute a list of actions on a given region in order.
- */
+ *
-message RegionMutationResult {
+ * If it is a list of mutate actions, atomic can be set
-  repeated ResultOrException resultOrException = 1;
+ * to make sure they can be processed atomically, just like
-}
+ * RowMutations.
-
-/**
- * Execute a list of actions on a given region in order.
  */
 message MultiRequest {
-  repeated RegionMutation regionMutation = 1;
+  required RegionSpecifier region = 1;
+  repeated MultiAction action = 2;
+  optional bool atomic = 3;
 }
 
 message MultiResponse {
-  repeated RegionMutationResult regionMutationResult = 1;
+  repeated ActionResult result = 1;
 }
 
 

hbase-protocol/src/main/protobuf/RPC.proto

@@ -119,9 +119,7 @@ message RequestHeader {
   optional bool request_param = 4;
   // If present, then an encoded data block follows.
   optional CellBlockMeta cell_block_meta = 5;
-  // 0 is NORMAL priority.  100 is HIGH.  If no priority, treat it as NORMAL.
+  // TODO: Have client specify priority
-  // See HConstants.
-  optional uint32 priority = 6;
 }
 
 message ResponseHeader {

hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/AnnotationReadingPriorityFunction.java

@@ -83,7 +83,8 @@ class AnnotationReadingPriorityFunction implements PriorityFunction {
       CompactRegionRequest.class,
       GetRequest.class,
       MutateRequest.class,
-      ScanRequest.class
+      ScanRequest.class,
+      MultiRequest.class
   };
 
   // Some caches for helping performance
@@ -100,7 +101,7 @@ class AnnotationReadingPriorityFunction implements PriorityFunction {
       if (p != null) {
         // Since we protobuf'd, and then subsequently, when we went with pb style, method names
         // are capitalized.  This meant that this brittle compare of method names gotten by
-        // reflection no longer matched the method names coming in over pb.  TODO: Get rid of this
+        // reflection no longer matched the method names comeing in over pb.  TODO: Get rid of this
         // check.  For now, workaround is to capitalize the names we got from reflection so they
         // have chance of matching the pb ones.
         String capitalizedMethodName = capitalize(m.getName());
@@ -108,6 +109,7 @@ class AnnotationReadingPriorityFunction implements PriorityFunction {
       }
     }
     this.annotatedQos = qosMap;
+
     if (methodMap.get("getRegion") == null) {
       methodMap.put("hasRegion", new HashMap<Class<? extends Message>, Method>());
       methodMap.put("getRegion", new HashMap<Class<? extends Message>, Method>());
@@ -146,14 +148,10 @@ class AnnotationReadingPriorityFunction implements PriorityFunction {
     if (priorityByAnnotation != null) {
       return priorityByAnnotation;
     }
+
     if (param == null) {
       return HConstants.NORMAL_QOS;
     }
-    if (methodName.equalsIgnoreCase("multi") && param instanceof MultiRequest) {
-      // The multi call has its priority set in the header.  All calls should work this way but
-      // only this one has been converted so far.  No priority == NORMAL_QOS.
-      return header.hasPriority()? header.getPriority(): HConstants.NORMAL_QOS;
-    }
     String cls = param.getClass().getName();
     Class<? extends Message> rpcArgClass = argumentToClassMap.get(cls);
     RegionSpecifier regionSpecifier = null;

hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java

@@ -73,16 +73,16 @@ import org.apache.hadoop.hbase.DroppedSnapshotException;
 import org.apache.hadoop.hbase.HBaseConfiguration;
 import org.apache.hadoop.hbase.HColumnDescriptor;
 import org.apache.hadoop.hbase.HConstants;
+import org.apache.hadoop.hbase.NotServingRegionException;
+import org.apache.hadoop.hbase.RegionTooBusyException;
+import org.apache.hadoop.hbase.TableName;
+import org.apache.hadoop.hbase.UnknownScannerException;
 import org.apache.hadoop.hbase.HConstants.OperationStatusCode;
 import org.apache.hadoop.hbase.HDFSBlocksDistribution;
 import org.apache.hadoop.hbase.HRegionInfo;
 import org.apache.hadoop.hbase.HTableDescriptor;
 import org.apache.hadoop.hbase.KeyValue;
 import org.apache.hadoop.hbase.KeyValueUtil;
-import org.apache.hadoop.hbase.NotServingRegionException;
-import org.apache.hadoop.hbase.RegionTooBusyException;
-import org.apache.hadoop.hbase.TableName;
-import org.apache.hadoop.hbase.UnknownScannerException;
 import org.apache.hadoop.hbase.backup.HFileArchiver;
 import org.apache.hadoop.hbase.client.Append;
 import org.apache.hadoop.hbase.client.Delete;
@@ -113,9 +113,11 @@ import org.apache.hadoop.hbase.ipc.RpcServer;
 import org.apache.hadoop.hbase.master.AssignmentManager;
 import org.apache.hadoop.hbase.monitoring.MonitoredTask;
 import org.apache.hadoop.hbase.monitoring.TaskMonitor;
+import org.apache.hadoop.hbase.protobuf.ProtobufUtil;
 import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.GetRegionInfoResponse.CompactionState;
 import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.WALEntry;
 import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.CoprocessorServiceCall;
+import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.MutationProto;
 import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.MutationProto.MutationType;
 import org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.SnapshotDescription;
 import org.apache.hadoop.hbase.protobuf.generated.WALProtos.CompactionDescriptor;

hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegionServer.java

@@ -18,6 +18,8 @@
  */
 package org.apache.hadoop.hbase.regionserver;
 
+import javax.management.ObjectName;
+
 import java.io.IOException;
 import java.lang.Thread.UncaughtExceptionHandler;
 import java.lang.annotation.Retention;
@@ -36,20 +38,18 @@ import java.util.HashSet;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
+import java.util.UUID;
 import java.util.Map.Entry;
 import java.util.Random;
 import java.util.Set;
 import java.util.SortedMap;
 import java.util.TreeMap;
 import java.util.TreeSet;
-import java.util.UUID;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.ConcurrentMap;
 import java.util.concurrent.ConcurrentSkipListMap;
 import java.util.concurrent.locks.ReentrantReadWriteLock;
 
-import javax.management.ObjectName;
-
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
@@ -65,6 +65,7 @@ import org.apache.hadoop.hbase.ClockOutOfSyncException;
 import org.apache.hadoop.hbase.DoNotRetryIOException;
 import org.apache.hadoop.hbase.HBaseConfiguration;
 import org.apache.hadoop.hbase.HConstants;
+import org.apache.hadoop.hbase.HConstants.OperationStatusCode;
 import org.apache.hadoop.hbase.HRegionInfo;
 import org.apache.hadoop.hbase.HTableDescriptor;
 import org.apache.hadoop.hbase.HealthCheckChore;
@@ -89,6 +90,7 @@ import org.apache.hadoop.hbase.client.Increment;
 import org.apache.hadoop.hbase.client.Mutation;
 import org.apache.hadoop.hbase.client.Put;
 import org.apache.hadoop.hbase.client.Result;
+import org.apache.hadoop.hbase.client.Row;
 import org.apache.hadoop.hbase.client.RowMutations;
 import org.apache.hadoop.hbase.client.Scan;
 import org.apache.hadoop.hbase.coprocessor.CoprocessorHost;
@@ -118,6 +120,7 @@ import org.apache.hadoop.hbase.protobuf.ProtobufUtil;
 import org.apache.hadoop.hbase.protobuf.RequestConverter;
 import org.apache.hadoop.hbase.protobuf.ResponseConverter;
 import org.apache.hadoop.hbase.protobuf.generated.AdminProtos;
+import org.apache.hadoop.hbase.protobuf.generated.HBaseProtos;
 import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.CloseRegionRequest;
 import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.CloseRegionResponse;
 import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.CompactRegionRequest;
@@ -135,6 +138,7 @@ import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.GetStoreFileRespon
 import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.MergeRegionsRequest;
 import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.MergeRegionsResponse;
 import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.OpenRegionRequest;
+import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.WALEntry;
 import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.OpenRegionRequest.RegionOpenInfo;
 import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.OpenRegionResponse;
 import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.OpenRegionResponse.RegionOpeningState;
@@ -148,8 +152,8 @@ import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.StopServerRequest;
 import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.StopServerResponse;
 import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateFavoredNodesRequest;
 import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateFavoredNodesResponse;
-import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.WALEntry;
 import org.apache.hadoop.hbase.protobuf.generated.ClientProtos;
+import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.ActionResult;
 import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.BulkLoadHFileRequest;
 import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.BulkLoadHFileRequest.FamilyPath;
 import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.BulkLoadHFileResponse;
@@ -166,9 +170,6 @@ import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.MutateRequest;
 import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.MutateResponse;
 import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.MutationProto;
 import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.MutationProto.MutationType;
-import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.RegionMutation;
-import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.RegionMutationResult;
-import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.ResultOrException;
 import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.ScanRequest;
 import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.ScanResponse;
 import org.apache.hadoop.hbase.protobuf.generated.ClusterStatusProtos;
@@ -184,6 +185,7 @@ import org.apache.hadoop.hbase.protobuf.generated.RegionServerStatusProtos.Regio
 import org.apache.hadoop.hbase.protobuf.generated.RegionServerStatusProtos.RegionServerStartupResponse;
 import org.apache.hadoop.hbase.protobuf.generated.RegionServerStatusProtos.RegionServerStatusService;
 import org.apache.hadoop.hbase.protobuf.generated.RegionServerStatusProtos.ReportRSFatalErrorRequest;
+import org.apache.hadoop.hbase.protobuf.generated.WALProtos.WALKey;
 import org.apache.hadoop.hbase.regionserver.HRegion.Operation;
 import org.apache.hadoop.hbase.regionserver.Leases.LeaseStillHeldException;
 import org.apache.hadoop.hbase.regionserver.compactions.CompactionProgress;
@@ -3303,115 +3305,108 @@ public class HRegionServer implements ClientProtos.ClientService.BlockingInterfa
     // It is also the conduit via which we pass back data.
     PayloadCarryingRpcController controller = (PayloadCarryingRpcController)rpcc;
     CellScanner cellScanner = controller != null ? controller.cellScanner(): null;
+    // Clear scanner so we are not holding on to reference across call.
     if (controller != null) controller.setCellScanner(null);
     List<CellScannable> cellsToReturn = null;
-    MultiResponse.Builder responseBuilder = MultiResponse.newBuilder();
     try {
-      for (RegionMutation regionMutation: request.getRegionMutationList()) {
+      HRegion region = getRegion(request.getRegion());
-        RegionMutationResult.Builder regionMutationResultBuilder = null;
+      MultiResponse.Builder builder = MultiResponse.newBuilder();
-        HRegion region = getRegion(regionMutation.getRegion());
+      List<MutationProto> mutations = new ArrayList<MutationProto>(request.getActionCount());
-        if (regionMutation.hasAtomic() && regionMutation.getAtomic()) {
+      // Do a bunch of mutations atomically.  Mutations are Puts and Deletes.  NOT Gets.
-          this.requestCount.increment();
+      if (request.hasAtomic() && request.getAtomic()) {
-          mutateRows(region, regionMutation.getMutationList(), cellScanner);
+        // MultiAction is union type.  Has a Get or a Mutate.
-        } else {
+        for (ClientProtos.MultiAction actionUnion : request.getActionList()) {
-          regionMutationResultBuilder = RegionMutationResult.newBuilder();
+          if (actionUnion.hasMutation()) {
-          cellsToReturn = doNonAtomicRegionMutation(region, regionMutation, cellScanner,
+            mutations.add(actionUnion.getMutation());
-            regionMutationResultBuilder, cellsToReturn);
+          } else {
+            throw new DoNotRetryIOException("Unsupported atomic action type: " + actionUnion);
+          }
+        }
+        // TODO: We are not updating a metric here.  Should we up requestCount?
+        if (!mutations.isEmpty()) mutateRows(region, mutations, cellScanner);
+      } else {
+        // Do a bunch of Actions.
+        ActionResult.Builder resultBuilder = null;
+        cellsToReturn = new ArrayList<CellScannable>(request.getActionCount());
+        for (ClientProtos.MultiAction actionUnion : request.getActionList()) {
+          this.requestCount.increment();
+          ClientProtos.Result result = null;
+          try {
+            if (actionUnion.hasGet()) {
+              Get get = ProtobufUtil.toGet(actionUnion.getGet());
+              Result r = region.get(get);
+              if (r != null) {
+                // Get a result with no data.  The data will be carried alongside pbs, not as pbs.
+                result = ProtobufUtil.toResultNoData(r);
+                // Add the Result to controller so it gets serialized apart from pb.  Get
+                // Results could be big so good if they are not serialized as pb.
+                cellsToReturn.add(r);
+              }
+            } else if (actionUnion.hasMutation()) {
+              MutationProto mutation = actionUnion.getMutation();
+              MutationType type = mutation.getMutateType();
+              if (type != MutationType.PUT && type != MutationType.DELETE) {
+                if (!mutations.isEmpty()) {
+                  doBatchOp(builder, region, mutations, cellScanner);
+                  mutations.clear();
+                } else if (!region.getRegionInfo().isMetaTable()) {
+                  cacheFlusher.reclaimMemStoreMemory();
+                }
+              }
+              Result r = null;
+              switch (type) {
+              case APPEND:
+                r = append(region, mutation, cellScanner);
+                break;
+              case INCREMENT:
+                r = increment(region, mutation, cellScanner);
+                break;
+              case PUT:
+              case DELETE:
+                mutations.add(mutation);
+                break;
+              default:
+                throw new DoNotRetryIOException("Unsupported mutate type: " + type.name());
+              }
+              if (r != null) {
+                // Put the data into the cellsToReturn and the metadata about the result is all that
+                // we will pass back in the protobuf result.
+                result = ProtobufUtil.toResultNoData(r);
+                cellsToReturn.add(r);
+              }
+            } else {
+              LOG.warn("Error: invalid action: " + actionUnion + ". "
+                + "it must be a Get, Mutate, or Exec.");
+              throw new DoNotRetryIOException("Invalid action, "
+                + "it must be a Get, Mutate, or Exec.");
+            }
+            if (result != null) {
+              if (resultBuilder == null) {
+                resultBuilder = ActionResult.newBuilder();
+              } else {
+                resultBuilder.clear();
+              }
+              resultBuilder.setValue(result);
+              builder.addResult(resultBuilder.build());
+            }
+          } catch (IOException ie) {
+            builder.addResult(ResponseConverter.buildActionResult(ie));
+          }
+        }
+        if (!mutations.isEmpty()) {
+          doBatchOp(builder, region, mutations, cellScanner);
         }
-        // Have one regionmutationresult per regionmutation even if it is empty so we keep results
-        // aligned w/ how the requests came in.
-        responseBuilder.addRegionMutationResult(regionMutationResultBuilder == null?
-          RegionMutationResult.getDefaultInstance(): regionMutationResultBuilder.build());
       }
       // Load the controller with the Cells to return.
       if (cellsToReturn != null && !cellsToReturn.isEmpty() && controller != null) {
         controller.setCellScanner(CellUtil.createCellScanner(cellsToReturn));
       }
-      return responseBuilder.build();
+      return builder.build();
     } catch (IOException ie) {
       throw new ServiceException(ie);
     }
   }
 
-  /**
-   * Run through the regionMutation <code>rm</code> and per Mutation, do the work, and then when
-   * done, add an instance of a {@link ResultOrException} that corresponds to each Mutation.
-   * @param region
-   * @param rm
-   * @param cellScanner
-   * @param builder
-   * @param cellsToReturn  Could be null. May be allocated in this method.  This is what this
-   * method returns as a 'result'.
-   * @return Return the <code>cellScanner</code> passed
-   */
-  private List<CellScannable> doNonAtomicRegionMutation(final HRegion region,
-      final RegionMutation rm, final CellScanner cellScanner,
-      final RegionMutationResult.Builder builder, List<CellScannable> cellsToReturn) {
-    // Gather up CONTIGUOUS Puts and Deletes in this mutations List.  Idea is that rather than do
-    // one at a time, we instead pass them in batch.  Be aware that the corresponding
-    // ResultOrException instance that matches each Put or Delete is then added down in the
-    // doBatchOp call.  We should be staying aligned though the Put and Delete are deferred/batched
-    List<MutationProto> mutations = null;
-    for (ClientProtos.MutationProto m: rm.getMutationList()) {
-      ClientProtos.ResultOrException resultOrException = null;
-      try {
-        Result r = null;
-        MutationType type = m.getMutateType();
-        if (type != MutationType.PUT && type != MutationType.DELETE && mutations != null &&
-            !mutations.isEmpty()) {
-          // Flush out any Puts or Deletes already collected.
-          doBatchOp(builder, region, mutations, cellScanner);
-          mutations.clear();
-        }
-        switch (type) {
-        case APPEND:
-          r = append(region, m, cellScanner);
-          break;
-        case INCREMENT:
-          r = increment(region, m, cellScanner);
-          break;
-        case PUT:
-        case DELETE:
-          // Collect the individual mutations and apply in a batch
-          if (mutations == null) mutations =
-            new ArrayList<MutationProto>(rm.getMutationCount());
-          mutations.add(m);
-          break;
-        default:
-          throw new DoNotRetryIOException("Unsupported mutate type: " + type.name());
-        }
-        if (r != null) {
-          ClientProtos.Result pbResult = null;
-          if (isClientCellBlockSupport()) {
-            pbResult = ProtobufUtil.toResultNoData(r);
-            //  Hard to guess the size here.  Just make a rough guess.
-            if (cellsToReturn == null) cellsToReturn = new ArrayList<CellScannable>(256);
-            cellsToReturn.add(r);
-          } else {
-            pbResult = ProtobufUtil.toResult(r);
-          }
-          resultOrException =
-            ClientProtos.ResultOrException.newBuilder().setResult(pbResult).build();
-        }
-        // Could get to here and there was no result and no exception.  Presumes we added
-        // a Put or Delete to the collecting Mutations List for adding later.  In this
-        // case the corresponding ResultOrException instance for the Put or Delete will be added
-        // down in the doBatchOp method call rather than up here.
-      } catch (IOException ie) {
-        resultOrException = ResultOrException.newBuilder().
-          setException(ResponseConverter.buildException(ie)).build();
-      }
-      if (resultOrException != null) {
-        builder.addResultOrException(resultOrException);
-      }
-    }
-    // Finish up any outstanding mutations
-    if (!mutations.isEmpty()) {
-      doBatchOp(builder, region, mutations, cellScanner);
-    }
-    return cellsToReturn;
-  }
-
 // End Client methods
 // Start Admin methods
 
@@ -3887,10 +3882,11 @@ public class HRegionServer implements ClientProtos.ClientService.BlockingInterfa
     try {
       checkOpen();
       List<WALEntry> entries = request.getEntryList();
-      if (entries == null || entries.isEmpty()) {
+      if(entries == null || entries.isEmpty()) {
         // empty input
         return ReplicateWALEntryResponse.newBuilder().build();
       }
+      
       HRegion region = this.getRegionByEncodedName(
         entries.get(0).getKey().getEncodedRegionName().toStringUtf8());
       RegionCoprocessorHost coprocessorHost = region.getCoprocessorHost();
@@ -4071,13 +4067,15 @@ public class HRegionServer implements ClientProtos.ClientService.BlockingInterfa
    * @param region
    * @param mutations
    */
-  protected void doBatchOp(final RegionMutationResult.Builder builder, final HRegion region,
+  protected void doBatchOp(final MultiResponse.Builder builder, final HRegion region,
       final List<MutationProto> mutations, final CellScanner cells) {
     Mutation[] mArray = new Mutation[mutations.size()];
     long before = EnvironmentEdgeManager.currentTimeMillis();
     boolean batchContainsPuts = false, batchContainsDelete = false;
-    ResultOrException resultOrException = null;
     try {
+      ActionResult.Builder resultBuilder = ActionResult.newBuilder();
+      resultBuilder.setValue(ClientProtos.Result.newBuilder().build());
+      ActionResult result = resultBuilder.build();
       int i = 0;
       for (MutationProto m : mutations) {
         Mutation mutation;
@@ -4089,6 +4087,7 @@ public class HRegionServer implements ClientProtos.ClientService.BlockingInterfa
           batchContainsDelete = true;
         }
         mArray[i++] = mutation;
+        builder.addResult(result);
       }
 
       requestCount.add(mutations.size());
@@ -4100,21 +4099,21 @@ public class HRegionServer implements ClientProtos.ClientService.BlockingInterfa
       for (i = 0; i < codes.length; i++) {
         switch (codes[i].getOperationStatusCode()) {
           case BAD_FAMILY:
-            resultOrException = ResponseConverter.buildActionResult(
+            result = ResponseConverter.buildActionResult(
                 new NoSuchColumnFamilyException(codes[i].getExceptionMsg()));
-            builder.setResultOrException(i, resultOrException);
+            builder.setResult(i, result);
             break;
 
           case SANITY_CHECK_FAILURE:
-            resultOrException = ResponseConverter.buildActionResult(
+            result = ResponseConverter.buildActionResult(
                 new FailedSanityCheckException(codes[i].getExceptionMsg()));
-            builder.setResultOrException(i, resultOrException);
+            builder.setResult(i, result);
             break;
 
           default:
-            resultOrException = ResponseConverter.buildActionResult(
+            result = ResponseConverter.buildActionResult(
                 new DoNotRetryIOException(codes[i].getExceptionMsg()));
-            builder.setResultOrException(i, resultOrException);
+            builder.setResult(i, result);
             break;
 
           case SUCCESS:
@@ -4122,9 +4121,9 @@ public class HRegionServer implements ClientProtos.ClientService.BlockingInterfa
         }
       }
     } catch (IOException ie) {
-      resultOrException = ResponseConverter.buildActionResult(ie);
+      ActionResult result = ResponseConverter.buildActionResult(ie);
       for (int i = 0; i < mutations.size(); i++) {
-        builder.setResultOrException(i, resultOrException);
+        builder.setResult(i, result);
       }
     }
     long after = EnvironmentEdgeManager.currentTimeMillis();
@@ -4146,9 +4145,8 @@ public class HRegionServer implements ClientProtos.ClientService.BlockingInterfa
    *         exceptionMessage if any
    * @throws IOException
    */
-  protected OperationStatus [] doBatchOp(final HRegion region,
+  protected OperationStatus[] doBatchOp(final HRegion region,
-      final List<Pair<MutationType, Mutation>> mutations, boolean isReplay)
+      final List<Pair<MutationType, Mutation>> mutations, boolean isReplay) throws IOException {
-  throws IOException {
     Mutation[] mArray = new Mutation[mutations.size()];
     long before = EnvironmentEdgeManager.currentTimeMillis();
     boolean batchContainsPuts = false, batchContainsDelete = false;

hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/wal/WALEditsReplaySink.java

@@ -33,14 +33,16 @@ import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.hbase.CellScanner;
 import org.apache.hadoop.hbase.KeyValue;
+import org.apache.hadoop.hbase.TableName;
+import org.apache.hadoop.hbase.DoNotRetryIOException;
 import org.apache.hadoop.hbase.HConstants;
 import org.apache.hadoop.hbase.HRegionInfo;
 import org.apache.hadoop.hbase.HRegionLocation;
-import org.apache.hadoop.hbase.TableName;
 import org.apache.hadoop.hbase.client.Action;
 import org.apache.hadoop.hbase.client.HConnection;
 import org.apache.hadoop.hbase.client.RegionServerCallable;
 import org.apache.hadoop.hbase.client.Row;
+import org.apache.hadoop.hbase.client.RpcRetryingCaller;
 import org.apache.hadoop.hbase.client.RpcRetryingCallerFactory;
 import org.apache.hadoop.hbase.ipc.PayloadCarryingRpcController;
 import org.apache.hadoop.hbase.protobuf.ProtobufUtil;
@@ -51,10 +53,10 @@ import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.ReplicateWALEntryR
 import org.apache.hadoop.hbase.protobuf.generated.HBaseProtos;
 import org.apache.hadoop.hbase.protobuf.generated.WALProtos;
 import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.AdminService;
+import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.ActionResult;
 import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.MultiRequest;
 import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.MultiResponse;
-import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.RegionMutationResult;
+import org.apache.hadoop.hbase.regionserver.NoSuchColumnFamilyException;
-import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.ResultOrException;
 import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;
 import org.apache.hadoop.hbase.util.Pair;
 

hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestQosFunction.java

@@ -20,8 +20,8 @@ import static org.junit.Assert.assertEquals;
 
 import org.apache.hadoop.hbase.HConstants;
 import org.apache.hadoop.hbase.SmallTests;
-import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.MultiRequest;
 import org.apache.hadoop.hbase.protobuf.generated.RPCProtos.RequestHeader;
+import org.apache.hadoop.hbase.util.Pair;
 import org.junit.Test;
 import org.junit.experimental.categories.Category;
 import org.mockito.Mockito;
@@ -43,19 +43,11 @@ public class TestQosFunction {
     checkMethod("ReplicateWALEntry", HConstants.REPLICATION_QOS, qosFunction);
     // Set method name in pb style with the method name capitalized.
     checkMethod("OpenRegion", HConstants.HIGH_QOS, qosFunction);
-    // Check multi works.
-    checkMethod("Multi", HConstants.NORMAL_QOS, qosFunction, MultiRequest.getDefaultInstance());
   }
 
-  private void checkMethod(final String methodName, final int expected,
+  private void checkMethod(final String methodName, final int expected, final AnnotationReadingPriorityFunction qosf) {
-      final AnnotationReadingPriorityFunction qosf) {
-    checkMethod(methodName, expected, qosf, null);
-  }
-
-  private void checkMethod(final String methodName, final int expected,
-      final AnnotationReadingPriorityFunction qosf, final Message param) {
     RequestHeader.Builder builder = RequestHeader.newBuilder();
     builder.setMethodName(methodName);
-    assertEquals(methodName, expected, qosf.getPriority(builder.build(), param));
+    assertEquals(methodName, expected, qosf.getPriority(builder.build(), null));
   }
 }