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Posted to commits@hbase.apache.org by br...@apache.org on 2020/07/07 23:01:10 UTC

[hbase] branch branch-2 updated: HBASE-24650 Change the return types of the new checkAndMutate methods introduced in HBASE-8458 (#2033)

This is an automated email from the ASF dual-hosted git repository.

brfrn169 pushed a commit to branch branch-2
in repository https://gitbox.apache.org/repos/asf/hbase.git


The following commit(s) were added to refs/heads/branch-2 by this push:
     new f771fd2  HBASE-24650 Change the return types of the new checkAndMutate methods introduced in HBASE-8458 (#2033)
f771fd2 is described below

commit f771fd26b44929623ee31c866544cbc26dad3ffe
Author: Toshihiro Suzuki <br...@gmail.com>
AuthorDate: Wed Jul 8 08:00:48 2020 +0900

    HBASE-24650 Change the return types of the new checkAndMutate methods introduced in HBASE-8458 (#2033)
    
    Signed-off-by: Duo Zhang <zh...@apache.org>
---
 .../org/apache/hadoop/hbase/client/AsyncTable.java |   9 +-
 .../apache/hadoop/hbase/client/AsyncTableImpl.java |   5 +-
 .../hadoop/hbase/client/CheckAndMutateResult.java  |  48 +++++++
 .../org/apache/hadoop/hbase/client/HTable.java     |  77 ++++++-----
 .../hadoop/hbase/client/RawAsyncTableImpl.java     |  53 +++----
 .../java/org/apache/hadoop/hbase/client/Table.java |  12 +-
 .../hbase/shaded/protobuf/ResponseConverter.java   |  74 +++++++---
 .../hadoop/hbase/rest/client/RemoteHTable.java     |   6 +-
 .../apache/hadoop/hbase/client/TestAsyncTable.java | 154 ++++++++++-----------
 .../hadoop/hbase/client/TestAsyncTableBatch.java   |   4 +-
 .../hadoop/hbase/client/TestCheckAndMutate.java    | 129 ++++++++---------
 .../hadoop/hbase/client/TestFromClientSide3.java   |   4 +-
 .../hadoop/hbase/thrift2/client/ThriftTable.java   |   5 +-
 13 files changed, 342 insertions(+), 238 deletions(-)

diff --git a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/AsyncTable.java b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/AsyncTable.java
index fd10603..25ea143 100644
--- a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/AsyncTable.java
+++ b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/AsyncTable.java
@@ -367,7 +367,7 @@ public interface AsyncTable<C extends ScanResultConsumerBase> {
    * @param checkAndMutate The CheckAndMutate object.
    * @return A {@link CompletableFuture}s that represent the result for the CheckAndMutate.
    */
-  CompletableFuture<Boolean> checkAndMutate(CheckAndMutate checkAndMutate);
+  CompletableFuture<CheckAndMutateResult> checkAndMutate(CheckAndMutate checkAndMutate);
 
   /**
    * Batch version of checkAndMutate. The specified CheckAndMutates are batched only in the sense
@@ -378,15 +378,16 @@ public interface AsyncTable<C extends ScanResultConsumerBase> {
    * @return A list of {@link CompletableFuture}s that represent the result for each
    *   CheckAndMutate.
    */
-  List<CompletableFuture<Boolean>> checkAndMutate(List<CheckAndMutate> checkAndMutates);
+  List<CompletableFuture<CheckAndMutateResult>> checkAndMutate(
+    List<CheckAndMutate> checkAndMutates);
 
   /**
    * A simple version of batch checkAndMutate. It will fail if there are any failures.
    *
    * @param checkAndMutates The list of rows to apply.
-   * @return A {@link CompletableFuture} that wrapper the result boolean list.
+   * @return A {@link CompletableFuture} that wrapper the result list.
    */
-  default CompletableFuture<List<Boolean>> checkAndMutateAll(
+  default CompletableFuture<List<CheckAndMutateResult>> checkAndMutateAll(
     List<CheckAndMutate> checkAndMutates) {
     return allOf(checkAndMutate(checkAndMutates));
   }
diff --git a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/AsyncTableImpl.java b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/AsyncTableImpl.java
index 836c9b5..82e8cd5 100644
--- a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/AsyncTableImpl.java
+++ b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/AsyncTableImpl.java
@@ -205,12 +205,13 @@ class AsyncTableImpl implements AsyncTable<ScanResultConsumer> {
   }
 
   @Override
-  public CompletableFuture<Boolean> checkAndMutate(CheckAndMutate checkAndMutate) {
+  public CompletableFuture<CheckAndMutateResult> checkAndMutate(CheckAndMutate checkAndMutate) {
     return wrap(rawTable.checkAndMutate(checkAndMutate));
   }
 
   @Override
-  public List<CompletableFuture<Boolean>> checkAndMutate(List<CheckAndMutate> checkAndMutates) {
+  public List<CompletableFuture<CheckAndMutateResult>> checkAndMutate(
+    List<CheckAndMutate> checkAndMutates) {
     return rawTable.checkAndMutate(checkAndMutates).stream()
       .map(this::wrap).collect(toList());
   }
diff --git a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/CheckAndMutateResult.java b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/CheckAndMutateResult.java
new file mode 100644
index 0000000..88b438a
--- /dev/null
+++ b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/CheckAndMutateResult.java
@@ -0,0 +1,48 @@
+/*
+ * 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 org.apache.yetus.audience.InterfaceAudience;
+
+/**
+ * Represents a result of a CheckAndMutate operation
+ */
+@InterfaceAudience.Public
+public class CheckAndMutateResult {
+  private final boolean success;
+  private final Result result;
+
+  public CheckAndMutateResult(boolean success, Result result) {
+    this.success = success;
+    this.result = result;
+  }
+
+  /**
+   * @return Whether the CheckAndMutate operation is successful or not
+   */
+  public boolean isSuccess() {
+    return success;
+  }
+
+  /**
+   * @return It is used only for CheckAndMutate operations with Increment/Append. Otherwise null
+   */
+  public Result getResult() {
+    return result;
+  }
+}
diff --git a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/HTable.java b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/HTable.java
index 5f02260..51e45b1 100644
--- a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/HTable.java
+++ b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/HTable.java
@@ -676,7 +676,7 @@ public class HTable implements Table {
   public boolean checkAndPut(final byte [] row, final byte [] family, final byte [] qualifier,
       final byte [] value, final Put put) throws IOException {
     return doCheckAndPut(row, family, qualifier, CompareOperator.EQUAL, value, null, null,
-      put);
+      put).isSuccess();
   }
 
   @Override
@@ -684,7 +684,7 @@ public class HTable implements Table {
   public boolean checkAndPut(final byte [] row, final byte [] family, final byte [] qualifier,
       final CompareOp compareOp, final byte [] value, final Put put) throws IOException {
     return doCheckAndPut(row, family, qualifier, toCompareOperator(compareOp), value, null,
-      null, put);
+      null, put).isSuccess();
   }
 
   @Override
@@ -693,25 +693,25 @@ public class HTable implements Table {
       final CompareOperator op, final byte [] value, final Put put) throws IOException {
     // The name of the operators in CompareOperator are intentionally those of the
     // operators in the filter's CompareOp enum.
-    return doCheckAndPut(row, family, qualifier, op, value, null, null, put);
+    return doCheckAndPut(row, family, qualifier, op, value, null, null, put).isSuccess();
   }
 
-  private boolean doCheckAndPut(final byte[] row, final byte[] family, final byte[] qualifier,
-    final CompareOperator op, final byte[] value, final Filter filter, final TimeRange timeRange,
-    final Put put) throws IOException {
-    ClientServiceCallable<Boolean> callable =
-        new ClientServiceCallable<Boolean>(this.connection, getName(), row,
+  private CheckAndMutateResult doCheckAndPut(final byte[] row, final byte[] family,
+    final byte[] qualifier, final CompareOperator op, final byte[] value, final Filter filter,
+    final TimeRange timeRange, final Put put) throws IOException {
+    ClientServiceCallable<CheckAndMutateResult> callable =
+        new ClientServiceCallable<CheckAndMutateResult>(this.connection, getName(), row,
             this.rpcControllerFactory.newController(), put.getPriority()) {
       @Override
-      protected Boolean rpcCall() throws Exception {
+      protected CheckAndMutateResult rpcCall() throws Exception {
         MutateRequest request = RequestConverter.buildMutateRequest(
           getLocation().getRegionInfo().getRegionName(), row, family, qualifier, op, value,
           filter, timeRange, put);
         MutateResponse response = doMutate(request);
-        return Boolean.valueOf(response.getProcessed());
+        return new CheckAndMutateResult(response.getProcessed(), null);
       }
     };
-    return rpcCallerFactory.<Boolean> newCaller(this.writeRpcTimeoutMs)
+    return rpcCallerFactory.<CheckAndMutateResult> newCaller(this.writeRpcTimeoutMs)
         .callWithRetries(callable, this.operationTimeoutMs);
   }
 
@@ -720,7 +720,7 @@ public class HTable implements Table {
   public boolean checkAndDelete(final byte[] row, final byte[] family, final byte[] qualifier,
     final byte[] value, final Delete delete) throws IOException {
     return doCheckAndDelete(row, family, qualifier, CompareOperator.EQUAL, value, null,
-      null, delete);
+      null, delete).isSuccess();
   }
 
   @Override
@@ -728,19 +728,19 @@ public class HTable implements Table {
   public boolean checkAndDelete(final byte[] row, final byte[] family, final byte[] qualifier,
     final CompareOp compareOp, final byte[] value, final Delete delete) throws IOException {
     return doCheckAndDelete(row, family, qualifier, toCompareOperator(compareOp), value, null,
-      null, delete);
+      null, delete).isSuccess();
   }
 
   @Override
   @Deprecated
   public boolean checkAndDelete(final byte[] row, final byte[] family, final byte[] qualifier,
     final CompareOperator op, final byte[] value, final Delete delete) throws IOException {
-    return doCheckAndDelete(row, family, qualifier, op, value, null, null, delete);
+    return doCheckAndDelete(row, family, qualifier, op, value, null, null, delete).isSuccess();
   }
 
-  private boolean doCheckAndDelete(final byte[] row, final byte[] family, final byte[] qualifier,
-    final CompareOperator op, final byte[] value, final Filter filter, final TimeRange timeRange,
-    final Delete delete) throws IOException {
+  private CheckAndMutateResult doCheckAndDelete(final byte[] row, final byte[] family,
+    final byte[] qualifier, final CompareOperator op, final byte[] value, final Filter filter,
+    final TimeRange timeRange, final Delete delete) throws IOException {
     CancellableRegionServerCallable<SingleResponse> callable =
       new CancellableRegionServerCallable<SingleResponse>(this.connection, getName(), row,
         this.rpcControllerFactory.newController(), writeRpcTimeoutMs,
@@ -768,7 +768,7 @@ public class HTable implements Table {
     if (ars.hasError()) {
       throw ars.getErrors();
     }
-    return ((SingleResponse.Entry) results[0]).isProcessed();
+    return new CheckAndMutateResult(((SingleResponse.Entry) results[0]).isProcessed(), null);
   }
 
   @Override
@@ -783,10 +783,9 @@ public class HTable implements Table {
     return new CheckAndMutateWithFilterBuilderImpl(row, filter);
   }
 
-  private boolean doCheckAndMutate(final byte[] row, final byte[] family, final byte[] qualifier,
-    final CompareOperator op, final byte[] value, final Filter filter, final TimeRange timeRange,
-    final RowMutations rm)
-    throws IOException {
+  private CheckAndMutateResult doCheckAndMutate(final byte[] row, final byte[] family,
+    final byte[] qualifier, final CompareOperator op, final byte[] value, final Filter filter,
+    final TimeRange timeRange, final RowMutations rm) throws IOException {
     CancellableRegionServerCallable<MultiResponse> callable =
     new CancellableRegionServerCallable<MultiResponse>(connection, getName(), rm.getRow(),
     rpcControllerFactory.newController(), writeRpcTimeoutMs, new RetryingTimeTracker().start(),
@@ -832,7 +831,7 @@ public class HTable implements Table {
       throw ars.getErrors();
     }
 
-    return ((Result)results[0]).getExists();
+    return (CheckAndMutateResult) results[0];
   }
 
   @Override
@@ -841,18 +840,18 @@ public class HTable implements Table {
     final CompareOp compareOp, final byte [] value, final RowMutations rm)
   throws IOException {
     return doCheckAndMutate(row, family, qualifier, toCompareOperator(compareOp), value, null,
-      null, rm);
+      null, rm).isSuccess();
   }
 
   @Override
   @Deprecated
   public boolean checkAndMutate(final byte [] row, final byte [] family, final byte [] qualifier,
       final CompareOperator op, final byte [] value, final RowMutations rm) throws IOException {
-    return doCheckAndMutate(row, family, qualifier, op, value, null, null, rm);
+    return doCheckAndMutate(row, family, qualifier, op, value, null, null, rm).isSuccess();
   }
 
   @Override
-  public boolean checkAndMutate(CheckAndMutate checkAndMutate) throws IOException {
+  public CheckAndMutateResult checkAndMutate(CheckAndMutate checkAndMutate) throws IOException {
     Row action = checkAndMutate.getAction();
     if (action instanceof Put) {
       Put put = (Put) action;
@@ -872,12 +871,13 @@ public class HTable implements Table {
   }
 
   @Override
-  public boolean[] checkAndMutate(List<CheckAndMutate> checkAndMutates) throws IOException {
+  public List<CheckAndMutateResult> checkAndMutate(List<CheckAndMutate> checkAndMutates)
+    throws IOException {
     if (checkAndMutates.isEmpty()) {
-      return new boolean[]{};
+      return Collections.emptyList();
     }
     if (checkAndMutates.size() == 1) {
-      return new boolean[]{ checkAndMutate(checkAndMutates.get(0)) };
+      return Collections.singletonList(checkAndMutate(checkAndMutates.get(0)));
     }
 
     Object[] results = new Object[checkAndMutates.size()];
@@ -888,11 +888,10 @@ public class HTable implements Table {
     }
 
     // translate.
-    boolean[] ret = new boolean[results.length];
-    int i = 0;
+    List<CheckAndMutateResult> ret = new ArrayList<>(results.length);
     for (Object r : results) {
       // Batch ensures if there is a failure we get an exception instead
-      ret[i++] = ((Result) r).getExists();
+      ret.add((CheckAndMutateResult) r);
     }
     return ret;
   }
@@ -1329,20 +1328,21 @@ public class HTable implements Table {
     public boolean thenPut(Put put) throws IOException {
       validatePut(put);
       preCheck();
-      return doCheckAndPut(row, family, qualifier, op, value, null, timeRange, put);
+      return doCheckAndPut(row, family, qualifier, op, value, null, timeRange, put).isSuccess();
     }
 
     @Override
     public boolean thenDelete(Delete delete) throws IOException {
       preCheck();
-      return doCheckAndDelete(row, family, qualifier, op, value, null, timeRange, delete);
+      return doCheckAndDelete(row, family, qualifier, op, value, null, timeRange, delete)
+        .isSuccess();
     }
 
     @Override
     public boolean thenMutate(RowMutations mutation) throws IOException {
       preCheck();
       return doCheckAndMutate(row, family, qualifier, op, value, null, timeRange,
-        mutation);
+        mutation).isSuccess();
     }
   }
 
@@ -1366,17 +1366,18 @@ public class HTable implements Table {
     @Override
     public boolean thenPut(Put put) throws IOException {
       validatePut(put);
-      return doCheckAndPut(row, null, null, null, null, filter, timeRange, put);
+      return doCheckAndPut(row, null, null, null, null, filter, timeRange, put).isSuccess();
     }
 
     @Override
     public boolean thenDelete(Delete delete) throws IOException {
-      return doCheckAndDelete(row, null, null, null, null, filter, timeRange, delete);
+      return doCheckAndDelete(row, null, null, null, null, filter, timeRange, delete).isSuccess();
     }
 
     @Override
     public boolean thenMutate(RowMutations mutation) throws IOException {
-      return doCheckAndMutate(row, null, null, null, null, filter, timeRange, mutation);
+      return doCheckAndMutate(row, null, null, null, null, filter, timeRange, mutation)
+        .isSuccess();
     }
   }
 }
diff --git a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/RawAsyncTableImpl.java b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/RawAsyncTableImpl.java
index dc3e530..aa42838 100644
--- a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/RawAsyncTableImpl.java
+++ b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/RawAsyncTableImpl.java
@@ -386,8 +386,7 @@ class RawAsyncTableImpl implements AsyncTable<AdvancedScanResultConsumer> {
         .action((controller, loc, stub) -> RawAsyncTableImpl.this.mutateRow(controller,
           loc, stub, mutation,
           (rn, rm) -> RequestConverter.buildMutateRequest(rn, row, family, qualifier, op, value,
-            null, timeRange, rm),
-          resp -> resp.getExists()))
+            null, timeRange, rm), CheckAndMutateResult::isSuccess))
         .call();
     }
   }
@@ -447,8 +446,7 @@ class RawAsyncTableImpl implements AsyncTable<AdvancedScanResultConsumer> {
         .action((controller, loc, stub) -> RawAsyncTableImpl.this.mutateRow(controller,
           loc, stub, mutation,
           (rn, rm) -> RequestConverter.buildMutateRequest(rn, row, null, null, null, null,
-            filter, timeRange, rm),
-          resp -> resp.getExists()))
+            filter, timeRange, rm), CheckAndMutateResult::isSuccess))
         .call();
     }
   }
@@ -459,7 +457,7 @@ class RawAsyncTableImpl implements AsyncTable<AdvancedScanResultConsumer> {
   }
 
   @Override
-  public CompletableFuture<Boolean> checkAndMutate(CheckAndMutate checkAndMutate) {
+  public CompletableFuture<CheckAndMutateResult> checkAndMutate(CheckAndMutate checkAndMutate) {
     if (checkAndMutate.getAction() instanceof Put) {
       validatePut((Put) checkAndMutate.getAction(), conn.connConf.getMaxKeyValueSize());
     }
@@ -469,7 +467,7 @@ class RawAsyncTableImpl implements AsyncTable<AdvancedScanResultConsumer> {
       if (mutation instanceof Put) {
         validatePut((Put) mutation, conn.connConf.getMaxKeyValueSize());
       }
-      return RawAsyncTableImpl.this.<Boolean> newCaller(checkAndMutate.getRow(),
+      return RawAsyncTableImpl.this.<CheckAndMutateResult> newCaller(checkAndMutate.getRow(),
         mutation.getPriority(), rpcTimeoutNs)
         .action((controller, loc, stub) -> RawAsyncTableImpl.mutate(controller,
           loc, stub, mutation,
@@ -477,22 +475,23 @@ class RawAsyncTableImpl implements AsyncTable<AdvancedScanResultConsumer> {
             checkAndMutate.getFamily(), checkAndMutate.getQualifier(),
             checkAndMutate.getCompareOp(), checkAndMutate.getValue(), checkAndMutate.getFilter(),
             checkAndMutate.getTimeRange(), m),
-          (c, r) -> r.getProcessed()))
+          (c, r) -> ResponseConverter.getCheckAndMutateResult(r)))
         .call();
     } else if (checkAndMutate.getAction() instanceof RowMutations) {
       RowMutations rowMutations = (RowMutations) checkAndMutate.getAction();
-      return RawAsyncTableImpl.this.<Boolean> newCaller(checkAndMutate.getRow(),
+      return RawAsyncTableImpl.this.<CheckAndMutateResult> newCaller(checkAndMutate.getRow(),
         rowMutations.getMaxPriority(), rpcTimeoutNs)
-        .action((controller, loc, stub) -> RawAsyncTableImpl.this.mutateRow(controller,
-          loc, stub, rowMutations,
-          (rn, rm) -> RequestConverter.buildMutateRequest(rn, checkAndMutate.getRow(),
+        .action((controller, loc, stub) ->
+          RawAsyncTableImpl.this.<CheckAndMutateResult, CheckAndMutateResult> mutateRow(
+            controller, loc, stub, rowMutations,
+            (rn, rm) -> RequestConverter.buildMutateRequest(rn, checkAndMutate.getRow(),
             checkAndMutate.getFamily(), checkAndMutate.getQualifier(),
             checkAndMutate.getCompareOp(), checkAndMutate.getValue(), checkAndMutate.getFilter(),
             checkAndMutate.getTimeRange(), rm),
-          resp -> resp.getExists()))
+            resp -> resp))
         .call();
     } else {
-      CompletableFuture<Boolean> future = new CompletableFuture<>();
+      CompletableFuture<CheckAndMutateResult> future = new CompletableFuture<>();
       future.completeExceptionally(new DoNotRetryIOException(
         "CheckAndMutate doesn't support " + checkAndMutate.getAction().getClass().getName()));
       return future;
@@ -500,18 +499,19 @@ class RawAsyncTableImpl implements AsyncTable<AdvancedScanResultConsumer> {
   }
 
   @Override
-  public List<CompletableFuture<Boolean>> checkAndMutate(List<CheckAndMutate> checkAndMutates) {
+  public List<CompletableFuture<CheckAndMutateResult>> checkAndMutate(
+    List<CheckAndMutate> checkAndMutates) {
     return batch(checkAndMutates, rpcTimeoutNs).stream()
-      .map(f -> f.thenApply(r -> ((Result)r).getExists()))
-      .collect(toList());
+      .map(f -> f.thenApply(r -> (CheckAndMutateResult) r)).collect(toList());
   }
 
   // We need the MultiRequest when constructing the org.apache.hadoop.hbase.client.MultiResponse,
   // so here I write a new method as I do not want to change the abstraction of call method.
-  private <RESP> CompletableFuture<RESP> mutateRow(HBaseRpcController controller,
+  @SuppressWarnings("unchecked")
+  private <RES, RESP> CompletableFuture<RESP> mutateRow(HBaseRpcController controller,
       HRegionLocation loc, ClientService.Interface stub, RowMutations mutation,
       Converter<MultiRequest, byte[], RowMutations> reqConvert,
-      Function<Result, RESP> respConverter) {
+      Function<RES, RESP> respConverter) {
     CompletableFuture<RESP> future = new CompletableFuture<>();
     try {
       byte[] regionName = loc.getRegion().getRegionName();
@@ -535,7 +535,7 @@ class RawAsyncTableImpl implements AsyncTable<AdvancedScanResultConsumer> {
                     "Failed to mutate row: " + Bytes.toStringBinary(mutation.getRow()), ex));
               } else {
                 future.complete(respConverter
-                  .apply((Result) multiResp.getResults().get(regionName).result.get(0)));
+                  .apply((RES) multiResp.getResults().get(regionName).result.get(0)));
               }
             } catch (IOException e) {
               future.completeExceptionally(e);
@@ -552,12 +552,15 @@ class RawAsyncTableImpl implements AsyncTable<AdvancedScanResultConsumer> {
   @Override
   public CompletableFuture<Void> mutateRow(RowMutations mutation) {
     return this.<Void> newCaller(mutation.getRow(), mutation.getMaxPriority(), writeRpcTimeoutNs)
-      .action((controller, loc, stub) -> this.<Void> mutateRow(controller, loc, stub, mutation,
-        (rn, rm) -> {
-          RegionAction.Builder regionMutationBuilder = RequestConverter.buildRegionAction(rn, rm);
-          regionMutationBuilder.setAtomic(true);
-          return MultiRequest.newBuilder().addRegionAction(regionMutationBuilder.build()).build();
-        }, resp -> null))
+      .action((controller, loc, stub) ->
+        this.<Result, Void> mutateRow(controller, loc, stub, mutation,
+          (rn, rm) -> {
+            RegionAction.Builder regionMutationBuilder = RequestConverter
+              .buildRegionAction(rn, rm);
+            regionMutationBuilder.setAtomic(true);
+            return MultiRequest.newBuilder().addRegionAction(regionMutationBuilder.build())
+              .build();
+          }, resp -> null))
       .call();
   }
 
diff --git a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/Table.java b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/Table.java
index b219980..34f5e39 100644
--- a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/Table.java
+++ b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/Table.java
@@ -617,11 +617,11 @@ public interface Table extends Closeable {
    * it performs the specified action.
    *
    * @param checkAndMutate The CheckAndMutate object.
-   * @return boolean that represents the result for the CheckAndMutate.
+   * @return A CheckAndMutateResult object that represents the result for the CheckAndMutate.
    * @throws IOException if a remote or network exception occurs.
    */
-  default boolean checkAndMutate(CheckAndMutate checkAndMutate) throws IOException {
-    return checkAndMutate(Collections.singletonList(checkAndMutate))[0];
+  default CheckAndMutateResult checkAndMutate(CheckAndMutate checkAndMutate) throws IOException {
+    return checkAndMutate(Collections.singletonList(checkAndMutate)).get(0);
   }
 
   /**
@@ -630,10 +630,12 @@ public interface Table extends Closeable {
    * atomically (and thus, each may fail independently of others).
    *
    * @param checkAndMutates The list of CheckAndMutate.
-   * @return A array of boolean that represents the result for each CheckAndMutate.
+   * @return A list of CheckAndMutateResult objects that represents the result for each
+   *   CheckAndMutate.
    * @throws IOException if a remote or network exception occurs.
    */
-  default boolean[] checkAndMutate(List<CheckAndMutate> checkAndMutates) throws IOException {
+  default List<CheckAndMutateResult> checkAndMutate(List<CheckAndMutate> checkAndMutates)
+    throws IOException {
     throw new NotImplementedException("Add an implementation!");
   }
 
diff --git a/hbase-client/src/main/java/org/apache/hadoop/hbase/shaded/protobuf/ResponseConverter.java b/hbase-client/src/main/java/org/apache/hadoop/hbase/shaded/protobuf/ResponseConverter.java
index b414b7b..ffe3970 100644
--- a/hbase-client/src/main/java/org/apache/hadoop/hbase/shaded/protobuf/ResponseConverter.java
+++ b/hbase-client/src/main/java/org/apache/hadoop/hbase/shaded/protobuf/ResponseConverter.java
@@ -27,6 +27,7 @@ import org.apache.hadoop.hbase.Cell;
 import org.apache.hadoop.hbase.CellScanner;
 import org.apache.hadoop.hbase.DoNotRetryIOException;
 import org.apache.hadoop.hbase.ServerName;
+import org.apache.hadoop.hbase.client.CheckAndMutateResult;
 import org.apache.hadoop.hbase.client.RegionInfo;
 import org.apache.hadoop.hbase.client.Result;
 import org.apache.hadoop.hbase.client.SingleResponse;
@@ -156,29 +157,55 @@ public final class ResponseConverter {
         // This RegionAction is from a RowMutations/CheckAndMutate in a batch.
         // If there is an exception from the server, the exception is set at
         // the RegionActionResult level, which has been handled above.
-        responseValue = actionResult.getProcessed() ?
+        if (actions.hasCondition()) {
+          Result result = null;
+          if (actionResult.getResultOrExceptionCount() > 0) {
+            ResultOrException roe = actionResult.getResultOrException(0);
+            if (roe.hasResult()) {
+              Result r = ProtobufUtil.toResult(roe.getResult(), cells);
+              if (!r.isEmpty()) {
+                result = r;
+              }
+            }
+          }
+          responseValue = new CheckAndMutateResult(actionResult.getProcessed(), result);
+        } else {
+          responseValue = actionResult.getProcessed() ?
             ProtobufUtil.EMPTY_RESULT_EXISTS_TRUE :
             ProtobufUtil.EMPTY_RESULT_EXISTS_FALSE;
+        }
         results.add(regionName, index, responseValue);
         continue;
       }
 
-      for (ResultOrException roe : actionResult.getResultOrExceptionList()) {
-        if (roe.hasException()) {
-          responseValue = ProtobufUtil.toException(roe.getException());
-        } else if (roe.hasResult()) {
-          responseValue = ProtobufUtil.toResult(roe.getResult(), cells);
-        } else if (roe.hasServiceResult()) {
-          responseValue = roe.getServiceResult();
-        } else {
-          // Sometimes, the response is just "it was processed". Generally, this occurs for things
-          // like mutateRows where either we get back 'processed' (or not) and optionally some
-          // statistics about the regions we touched.
-          responseValue = actionResult.getProcessed() ?
-                          ProtobufUtil.EMPTY_RESULT_EXISTS_TRUE :
-                          ProtobufUtil.EMPTY_RESULT_EXISTS_FALSE;
+      if (actions.hasCondition()) {
+        for (ResultOrException roe : actionResult.getResultOrExceptionList()) {
+          Result result = null;
+          Result r = ProtobufUtil.toResult(roe.getResult(), cells);
+          if (!r.isEmpty()) {
+            result = r;
+          }
+          responseValue = new CheckAndMutateResult(actionResult.getProcessed(), result);
+          results.add(regionName, roe.getIndex(), responseValue);
+        }
+      } else {
+        for (ResultOrException roe : actionResult.getResultOrExceptionList()) {
+          if (roe.hasException()) {
+            responseValue = ProtobufUtil.toException(roe.getException());
+          } else if (roe.hasResult()) {
+            responseValue = ProtobufUtil.toResult(roe.getResult(), cells);
+          } else if (roe.hasServiceResult()) {
+            responseValue = roe.getServiceResult();
+          } else {
+            // Sometimes, the response is just "it was processed". Generally, this occurs for things
+            // like mutateRows where either we get back 'processed' (or not) and optionally some
+            // statistics about the regions we touched.
+            responseValue = actionResult.getProcessed() ?
+              ProtobufUtil.EMPTY_RESULT_EXISTS_TRUE :
+              ProtobufUtil.EMPTY_RESULT_EXISTS_FALSE;
+          }
+          results.add(regionName, roe.getIndex(), responseValue);
         }
-        results.add(regionName, roe.getIndex(), responseValue);
       }
     }
 
@@ -193,6 +220,21 @@ public final class ResponseConverter {
   }
 
   /**
+   * Create a CheckAndMutateResult object from a protocol buffer MutateResponse
+   *
+   * @return a CheckAndMutateResult object
+   */
+  public static CheckAndMutateResult getCheckAndMutateResult(
+    ClientProtos.MutateResponse mutateResponse) {
+    boolean success = mutateResponse.getProcessed();
+    Result result = null;
+    if (mutateResponse.hasResult()) {
+      result = ProtobufUtil.toResult(mutateResponse.getResult());
+    }
+    return new CheckAndMutateResult(success, result);
+  }
+
+  /**
    * Wrap a throwable to an action result.
    *
    * @param t
diff --git a/hbase-rest/src/test/java/org/apache/hadoop/hbase/rest/client/RemoteHTable.java b/hbase-rest/src/test/java/org/apache/hadoop/hbase/rest/client/RemoteHTable.java
index cd9ec7f..f849601 100644
--- a/hbase-rest/src/test/java/org/apache/hadoop/hbase/rest/client/RemoteHTable.java
+++ b/hbase-rest/src/test/java/org/apache/hadoop/hbase/rest/client/RemoteHTable.java
@@ -53,6 +53,7 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.apache.hadoop.hbase.client.Append;
 import org.apache.hadoop.hbase.client.CheckAndMutate;
+import org.apache.hadoop.hbase.client.CheckAndMutateResult;
 import org.apache.hadoop.hbase.client.Delete;
 import org.apache.hadoop.hbase.client.Get;
 import org.apache.hadoop.hbase.client.Increment;
@@ -812,13 +813,12 @@ public class RemoteHTable implements Table {
     throw new UnsupportedOperationException("checkAndMutate not implemented");
   }
 
-  @Override
-  public boolean checkAndMutate(CheckAndMutate checkAndMutate) {
+  public CheckAndMutateResult checkAndMutate(CheckAndMutate checkAndMutate) {
     throw new NotImplementedException("Implement later");
   }
 
   @Override
-  public boolean[] checkAndMutate(List<CheckAndMutate> checkAndMutates) {
+  public List<CheckAndMutateResult> checkAndMutate(List<CheckAndMutate> checkAndMutates) {
     throw new NotImplementedException("Implement later");
   }
 
diff --git a/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestAsyncTable.java b/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestAsyncTable.java
index 0de1892..de81750 100644
--- a/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestAsyncTable.java
+++ b/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestAsyncTable.java
@@ -632,7 +632,7 @@ public class TestAsyncTable {
           .ifNotExists(FAMILY, QUALIFIER)
           .build(new Put(row).addColumn(FAMILY, QUALIFIER, concat(VALUE, i))))
         .thenAccept(x -> {
-          if (x) {
+          if (x.isSuccess()) {
             successCount.incrementAndGet();
             successIndex.set(i);
           }
@@ -666,7 +666,7 @@ public class TestAsyncTable {
           .build(
             new Delete(row).addColumn(FAMILY, QUALIFIER).addColumn(FAMILY, concat(QUALIFIER, i))))
         .thenAccept(x -> {
-          if (x) {
+          if (x.isSuccess()) {
             successCount.incrementAndGet();
             successIndex.set(i);
           }
@@ -713,7 +713,7 @@ public class TestAsyncTable {
           .ifEquals(FAMILY, QUALIFIER, VALUE)
           .build(mutation))
         .thenAccept(x -> {
-          if (x) {
+          if (x.isSuccess()) {
             successCount.incrementAndGet();
             successIndex.set(i);
           }
@@ -739,50 +739,50 @@ public class TestAsyncTable {
     Put put = new Put(row);
     put.addColumn(FAMILY, QUALIFIER, ts, VALUE);
 
-    boolean ok = table.checkAndMutate(CheckAndMutate.newBuilder(row)
+    CheckAndMutateResult result = table.checkAndMutate(CheckAndMutate.newBuilder(row)
       .ifNotExists(FAMILY, QUALIFIER)
       .build(put)).get();
-    assertTrue(ok);
+    assertTrue(result.isSuccess());
 
-    ok = table.checkAndMutate(CheckAndMutate.newBuilder(row)
+    result = table.checkAndMutate(CheckAndMutate.newBuilder(row)
       .ifEquals(FAMILY, QUALIFIER, VALUE)
       .timeRange(TimeRange.at(ts + 10000))
       .build(put)).get();
-    assertFalse(ok);
+    assertFalse(result.isSuccess());
 
-    ok = table.checkAndMutate(CheckAndMutate.newBuilder(row)
+    result = table.checkAndMutate(CheckAndMutate.newBuilder(row)
       .ifEquals(FAMILY, QUALIFIER, VALUE)
       .timeRange(TimeRange.at(ts))
       .build(put)).get();
-    assertTrue(ok);
+    assertTrue(result.isSuccess());
 
     RowMutations rm = new RowMutations(row).add((Mutation) put);
 
-    ok = table.checkAndMutate(CheckAndMutate.newBuilder(row)
+    result = table.checkAndMutate(CheckAndMutate.newBuilder(row)
       .ifEquals(FAMILY, QUALIFIER, VALUE)
       .timeRange(TimeRange.at(ts + 10000))
       .build(rm)).get();
-    assertFalse(ok);
+    assertFalse(result.isSuccess());
 
-    ok = table.checkAndMutate(CheckAndMutate.newBuilder(row)
+    result = table.checkAndMutate(CheckAndMutate.newBuilder(row)
       .ifEquals(FAMILY, QUALIFIER, VALUE)
       .timeRange(TimeRange.at(ts))
       .build(rm)).get();
-    assertTrue(ok);
+    assertTrue(result.isSuccess());
 
     Delete delete = new Delete(row).addColumn(FAMILY, QUALIFIER);
 
-    ok = table.checkAndMutate(CheckAndMutate.newBuilder(row)
+    result = table.checkAndMutate(CheckAndMutate.newBuilder(row)
       .ifEquals(FAMILY, QUALIFIER, VALUE)
       .timeRange(TimeRange.at(ts + 10000))
       .build(delete)).get();
-    assertFalse(ok);
+    assertFalse(result.isSuccess());
 
-    ok = table.checkAndMutate(CheckAndMutate.newBuilder(row)
+    result = table.checkAndMutate(CheckAndMutate.newBuilder(row)
       .ifEquals(FAMILY, QUALIFIER, VALUE)
       .timeRange(TimeRange.at(ts))
       .build(delete)).get();
-    assertTrue(ok);
+    assertTrue(result.isSuccess());
   }
 
   @Test
@@ -797,45 +797,45 @@ public class TestAsyncTable {
     table.put(put).get();
 
     // Put with success
-    boolean ok = table.checkAndMutate(CheckAndMutate.newBuilder(row)
+    CheckAndMutateResult result = table.checkAndMutate(CheckAndMutate.newBuilder(row)
       .ifMatches(new SingleColumnValueFilter(FAMILY, Bytes.toBytes("A"),
         CompareOperator.EQUAL, Bytes.toBytes("a")))
       .build(new Put(row).addColumn(FAMILY, Bytes.toBytes("D"), Bytes.toBytes("d")))).get();
-    assertTrue(ok);
+    assertTrue(result.isSuccess());
 
-    Result result = table.get(new Get(row).addColumn(FAMILY, Bytes.toBytes("D"))).get();
-    assertEquals("d", Bytes.toString(result.getValue(FAMILY, Bytes.toBytes("D"))));
+    Result r = table.get(new Get(row).addColumn(FAMILY, Bytes.toBytes("D"))).get();
+    assertEquals("d", Bytes.toString(r.getValue(FAMILY, Bytes.toBytes("D"))));
 
     // Put with failure
-    ok = table.checkAndMutate(CheckAndMutate.newBuilder(row)
+    result = table.checkAndMutate(CheckAndMutate.newBuilder(row)
       .ifMatches(new SingleColumnValueFilter(FAMILY, Bytes.toBytes("A"),
         CompareOperator.EQUAL, Bytes.toBytes("b")))
       .build(new Put(row).addColumn(FAMILY, Bytes.toBytes("E"), Bytes.toBytes("e")))).get();
-    assertFalse(ok);
+    assertFalse(result.isSuccess());
 
     assertFalse(table.exists(new Get(row).addColumn(FAMILY, Bytes.toBytes("E"))).get());
 
     // Delete with success
-    ok = table.checkAndMutate(CheckAndMutate.newBuilder(row)
+    result = table.checkAndMutate(CheckAndMutate.newBuilder(row)
       .ifMatches(new SingleColumnValueFilter(FAMILY, Bytes.toBytes("A"),
         CompareOperator.EQUAL, Bytes.toBytes("a")))
       .build(new Delete(row).addColumns(FAMILY, Bytes.toBytes("D")))).get();
-    assertTrue(ok);
+    assertTrue(result.isSuccess());
 
     assertFalse(table.exists(new Get(row).addColumn(FAMILY, Bytes.toBytes("D"))).get());
 
     // Mutate with success
-    ok = table.checkAndMutate(CheckAndMutate.newBuilder(row)
+    result = table.checkAndMutate(CheckAndMutate.newBuilder(row)
       .ifMatches(new SingleColumnValueFilter(FAMILY, Bytes.toBytes("B"),
         CompareOperator.EQUAL, Bytes.toBytes("b")))
       .build(new RowMutations(row)
         .add((Mutation) new Put(row)
           .addColumn(FAMILY, Bytes.toBytes("D"), Bytes.toBytes("d")))
         .add((Mutation) new Delete(row).addColumns(FAMILY, Bytes.toBytes("A"))))).get();
-    assertTrue(ok);
+    assertTrue(result.isSuccess());
 
-    result = table.get(new Get(row).addColumn(FAMILY, Bytes.toBytes("D"))).get();
-    assertEquals("d", Bytes.toString(result.getValue(FAMILY, Bytes.toBytes("D"))));
+    r = table.get(new Get(row).addColumn(FAMILY, Bytes.toBytes("D"))).get();
+    assertEquals("d", Bytes.toString(r.getValue(FAMILY, Bytes.toBytes("D"))));
 
     assertFalse(table.exists(new Get(row).addColumn(FAMILY, Bytes.toBytes("A"))).get());
   }
@@ -852,44 +852,44 @@ public class TestAsyncTable {
     table.put(put).get();
 
     // Put with success
-    boolean ok = table.checkAndMutate(CheckAndMutate.newBuilder(row)
+    CheckAndMutateResult result = table.checkAndMutate(CheckAndMutate.newBuilder(row)
       .ifMatches(new FilterList(
         new SingleColumnValueFilter(FAMILY, Bytes.toBytes("A"), CompareOperator.EQUAL,
           Bytes.toBytes("a")),
         new SingleColumnValueFilter(FAMILY, Bytes.toBytes("B"), CompareOperator.EQUAL,
           Bytes.toBytes("b"))))
       .build(new Put(row).addColumn(FAMILY, Bytes.toBytes("D"), Bytes.toBytes("d")))).get();
-    assertTrue(ok);
+    assertTrue(result.isSuccess());
 
-    Result result = table.get(new Get(row).addColumn(FAMILY, Bytes.toBytes("D"))).get();
-    assertEquals("d", Bytes.toString(result.getValue(FAMILY, Bytes.toBytes("D"))));
+    Result r = table.get(new Get(row).addColumn(FAMILY, Bytes.toBytes("D"))).get();
+    assertEquals("d", Bytes.toString(r.getValue(FAMILY, Bytes.toBytes("D"))));
 
     // Put with failure
-    ok = table.checkAndMutate(CheckAndMutate.newBuilder(row)
+    result = table.checkAndMutate(CheckAndMutate.newBuilder(row)
       .ifMatches(new FilterList(
         new SingleColumnValueFilter(FAMILY, Bytes.toBytes("A"), CompareOperator.EQUAL,
           Bytes.toBytes("a")),
         new SingleColumnValueFilter(FAMILY, Bytes.toBytes("B"), CompareOperator.EQUAL,
           Bytes.toBytes("c"))))
       .build(new Put(row).addColumn(FAMILY, Bytes.toBytes("E"), Bytes.toBytes("e")))).get();
-    assertFalse(ok);
+    assertFalse(result.isSuccess());
 
     assertFalse(table.exists(new Get(row).addColumn(FAMILY, Bytes.toBytes("E"))).get());
 
     // Delete with success
-    ok = table.checkAndMutate(CheckAndMutate.newBuilder(row)
+    result = table.checkAndMutate(CheckAndMutate.newBuilder(row)
       .ifMatches(new FilterList(
         new SingleColumnValueFilter(FAMILY, Bytes.toBytes("A"), CompareOperator.EQUAL,
           Bytes.toBytes("a")),
         new SingleColumnValueFilter(FAMILY, Bytes.toBytes("B"), CompareOperator.EQUAL,
           Bytes.toBytes("b"))))
       .build(new Delete(row).addColumns(FAMILY, Bytes.toBytes("D")))).get();
-    assertTrue(ok);
+    assertTrue(result.isSuccess());
 
     assertFalse(table.exists(new Get(row).addColumn(FAMILY, Bytes.toBytes("D"))).get());
 
     // Mutate with success
-    ok = table.checkAndMutate(CheckAndMutate.newBuilder(row)
+    result = table.checkAndMutate(CheckAndMutate.newBuilder(row)
       .ifMatches(new FilterList(
         new SingleColumnValueFilter(FAMILY, Bytes.toBytes("A"), CompareOperator.EQUAL,
           Bytes.toBytes("a")),
@@ -899,10 +899,10 @@ public class TestAsyncTable {
         .add((Mutation) new Put(row)
           .addColumn(FAMILY, Bytes.toBytes("D"), Bytes.toBytes("d")))
         .add((Mutation) new Delete(row).addColumns(FAMILY, Bytes.toBytes("A"))))).get();
-    assertTrue(ok);
+    assertTrue(result.isSuccess());
 
-    result = table.get(new Get(row).addColumn(FAMILY, Bytes.toBytes("D"))).get();
-    assertEquals("d", Bytes.toString(result.getValue(FAMILY, Bytes.toBytes("D"))));
+    r = table.get(new Get(row).addColumn(FAMILY, Bytes.toBytes("D"))).get();
+    assertEquals("d", Bytes.toString(r.getValue(FAMILY, Bytes.toBytes("D"))));
 
     assertFalse(table.exists(new Get(row).addColumn(FAMILY, Bytes.toBytes("A"))).get());
   }
@@ -915,25 +915,25 @@ public class TestAsyncTable {
     table.put(new Put(row).addColumn(FAMILY, Bytes.toBytes("A"), 100, Bytes.toBytes("a"))).get();
 
     // Put with success
-    boolean ok = table.checkAndMutate(CheckAndMutate.newBuilder(row)
+    CheckAndMutateResult result = table.checkAndMutate(CheckAndMutate.newBuilder(row)
       .ifMatches(new FilterList(
         new FamilyFilter(CompareOperator.EQUAL, new BinaryComparator(FAMILY)),
         new QualifierFilter(CompareOperator.EQUAL, new BinaryComparator(Bytes.toBytes("A"))),
         new TimestampsFilter(Collections.singletonList(100L))))
       .build(new Put(row).addColumn(FAMILY, Bytes.toBytes("B"), Bytes.toBytes("b")))).get();
-    assertTrue(ok);
+    assertTrue(result.isSuccess());
 
-    Result result = table.get(new Get(row).addColumn(FAMILY, Bytes.toBytes("B"))).get();
-    assertEquals("b", Bytes.toString(result.getValue(FAMILY, Bytes.toBytes("B"))));
+    Result r = table.get(new Get(row).addColumn(FAMILY, Bytes.toBytes("B"))).get();
+    assertEquals("b", Bytes.toString(r.getValue(FAMILY, Bytes.toBytes("B"))));
 
     // Put with failure
-    ok = table.checkAndMutate(CheckAndMutate.newBuilder(row)
+    result = table.checkAndMutate(CheckAndMutate.newBuilder(row)
       .ifMatches(new FilterList(
         new FamilyFilter(CompareOperator.EQUAL, new BinaryComparator(FAMILY)),
         new QualifierFilter(CompareOperator.EQUAL, new BinaryComparator(Bytes.toBytes("A"))),
         new TimestampsFilter(Collections.singletonList(101L))))
       .build(new Put(row).addColumn(FAMILY, Bytes.toBytes("C"), Bytes.toBytes("c")))).get();
-    assertFalse(ok);
+    assertFalse(result.isSuccess());
 
     assertFalse(table.exists(new Get(row).addColumn(FAMILY, Bytes.toBytes("C"))).get());
   }
@@ -947,24 +947,24 @@ public class TestAsyncTable {
       .get();
 
     // Put with success
-    boolean ok = table.checkAndMutate(CheckAndMutate.newBuilder(row)
+    CheckAndMutateResult result = table.checkAndMutate(CheckAndMutate.newBuilder(row)
       .ifMatches(new SingleColumnValueFilter(FAMILY, Bytes.toBytes("A"),
         CompareOperator.EQUAL, Bytes.toBytes("a")))
       .timeRange(TimeRange.between(0, 101))
       .build(new Put(row).addColumn(FAMILY, Bytes.toBytes("B"), Bytes.toBytes("b")))).get();
-    assertTrue(ok);
+    assertTrue(result.isSuccess());
 
-    Result result = table.get(new Get(row).addColumn(FAMILY, Bytes.toBytes("B"))).get();
-    assertEquals("b", Bytes.toString(result.getValue(FAMILY, Bytes.toBytes("B"))));
+    Result r = table.get(new Get(row).addColumn(FAMILY, Bytes.toBytes("B"))).get();
+    assertEquals("b", Bytes.toString(r.getValue(FAMILY, Bytes.toBytes("B"))));
 
     // Put with failure
-    ok = table.checkAndMutate(CheckAndMutate.newBuilder(row)
+    result = table.checkAndMutate(CheckAndMutate.newBuilder(row)
       .ifMatches(new SingleColumnValueFilter(FAMILY, Bytes.toBytes("A"),
         CompareOperator.EQUAL, Bytes.toBytes("a")))
       .timeRange(TimeRange.between(0, 100))
       .build(new Put(row).addColumn(FAMILY, Bytes.toBytes("C"), Bytes.toBytes("c"))))
       .get();
-    assertFalse(ok);
+    assertFalse(result.isSuccess());
 
     assertFalse(table.exists(new Get(row).addColumn(FAMILY, Bytes.toBytes("C"))).get());
   }
@@ -993,11 +993,11 @@ public class TestAsyncTable {
       .ifEquals(FAMILY, Bytes.toBytes("B"), Bytes.toBytes("a"))
       .build(new Put(row2).addColumn(FAMILY, Bytes.toBytes("B"), Bytes.toBytes("f")));
 
-    List<Boolean> results =
+    List<CheckAndMutateResult> results =
       table.checkAndMutateAll(Arrays.asList(checkAndMutate1, checkAndMutate2)).get();
 
-    assertTrue(results.get(0));
-    assertFalse(results.get(1));
+    assertTrue(results.get(0).isSuccess());
+    assertFalse(results.get(1).isSuccess());
 
     Result result = table.get(new Get(row).addColumn(FAMILY, Bytes.toBytes("A"))).get();
     assertEquals("e", Bytes.toString(result.getValue(FAMILY, Bytes.toBytes("A"))));
@@ -1016,8 +1016,8 @@ public class TestAsyncTable {
 
     results = table.checkAndMutateAll(Arrays.asList(checkAndMutate1, checkAndMutate2)).get();
 
-    assertTrue(results.get(0));
-    assertFalse(results.get(1));
+    assertTrue(results.get(0).isSuccess());
+    assertFalse(results.get(1).isSuccess());
 
     assertFalse(table.exists(new Get(row).addColumn(FAMILY, Bytes.toBytes("A"))).get());
 
@@ -1041,8 +1041,8 @@ public class TestAsyncTable {
 
     results = table.checkAndMutateAll(Arrays.asList(checkAndMutate1, checkAndMutate2)).get();
 
-    assertTrue(results.get(0));
-    assertFalse(results.get(1));
+    assertTrue(results.get(0).isSuccess());
+    assertFalse(results.get(1).isSuccess());
 
     result = table.get(new Get(row3)).get();
     assertEquals("f", Bytes.toString(result.getValue(FAMILY, Bytes.toBytes("F"))));
@@ -1075,11 +1075,11 @@ public class TestAsyncTable {
       .ifNotExists(FAMILY, Bytes.toBytes("B"))
       .build(new Put(row2).addColumn(FAMILY, Bytes.toBytes("B"), Bytes.toBytes("f")));
 
-    List<Boolean> results =
+    List<CheckAndMutateResult> results =
       table.checkAndMutateAll(Arrays.asList(checkAndMutate1, checkAndMutate2)).get();
 
-    assertTrue(results.get(0));
-    assertFalse(results.get(1));
+    assertTrue(results.get(0).isSuccess());
+    assertFalse(results.get(1).isSuccess());
 
     Result result = table.get(new Get(row).addColumn(FAMILY, Bytes.toBytes("A"))).get();
     assertEquals("e", Bytes.toString(result.getValue(FAMILY, Bytes.toBytes("A"))));
@@ -1098,8 +1098,8 @@ public class TestAsyncTable {
 
     results = table.checkAndMutateAll(Arrays.asList(checkAndMutate1, checkAndMutate2)).get();
 
-    assertTrue(results.get(0));
-    assertFalse(results.get(1));
+    assertTrue(results.get(0).isSuccess());
+    assertFalse(results.get(1).isSuccess());
 
     result = table.get(new Get(row).addColumn(FAMILY, Bytes.toBytes("A"))).get();
     assertEquals("a", Bytes.toString(result.getValue(FAMILY, Bytes.toBytes("A"))));
@@ -1120,8 +1120,8 @@ public class TestAsyncTable {
 
     results = table.checkAndMutateAll(Arrays.asList(checkAndMutate1, checkAndMutate2)).get();
 
-    assertTrue(results.get(0));
-    assertFalse(results.get(1));
+    assertTrue(results.get(0).isSuccess());
+    assertFalse(results.get(1).isSuccess());
 
     result = table.get(new Get(row3).addColumn(FAMILY, Bytes.toBytes("C"))).get();
     assertEquals("e", Bytes.toString(result.getValue(FAMILY, Bytes.toBytes("C"))));
@@ -1162,11 +1162,11 @@ public class TestAsyncTable {
           Bytes.toBytes("b"))))
       .build(new Put(row2).addColumn(FAMILY, Bytes.toBytes("F"), Bytes.toBytes("h")));
 
-    List<Boolean> results =
+    List<CheckAndMutateResult> results =
       table.checkAndMutateAll(Arrays.asList(checkAndMutate1, checkAndMutate2)).get();
 
-    assertTrue(results.get(0));
-    assertFalse(results.get(1));
+    assertTrue(results.get(0).isSuccess());
+    assertFalse(results.get(1).isSuccess());
 
     Result result = table.get(new Get(row).addColumn(FAMILY, Bytes.toBytes("C"))).get();
     assertEquals("g", Bytes.toString(result.getValue(FAMILY, Bytes.toBytes("C"))));
@@ -1193,8 +1193,8 @@ public class TestAsyncTable {
 
     results = table.checkAndMutateAll(Arrays.asList(checkAndMutate1, checkAndMutate2)).get();
 
-    assertTrue(results.get(0));
-    assertFalse(results.get(1));
+    assertTrue(results.get(0).isSuccess());
+    assertFalse(results.get(1).isSuccess());
 
     assertFalse(table.exists(new Get(row).addColumn(FAMILY, Bytes.toBytes("C"))).get());
 
@@ -1226,8 +1226,8 @@ public class TestAsyncTable {
 
     results = table.checkAndMutateAll(Arrays.asList(checkAndMutate1, checkAndMutate2)).get();
 
-    assertTrue(results.get(0));
-    assertFalse(results.get(1));
+    assertTrue(results.get(0).isSuccess());
+    assertFalse(results.get(1).isSuccess());
 
     result = table.get(new Get(row)).get();
     assertNull(result.getValue(FAMILY, Bytes.toBytes("A")));
@@ -1269,11 +1269,11 @@ public class TestAsyncTable {
       .timeRange(TimeRange.between(0, 100))
       .build(new Put(row2).addColumn(FAMILY, Bytes.toBytes("F"), Bytes.toBytes("h")));
 
-    List<Boolean> results =
+    List<CheckAndMutateResult> results =
       table.checkAndMutateAll(Arrays.asList(checkAndMutate1, checkAndMutate2)).get();
 
-    assertTrue(results.get(0));
-    assertFalse(results.get(1));
+    assertTrue(results.get(0).isSuccess());
+    assertFalse(results.get(1).isSuccess());
 
     Result result = table.get(new Get(row).addColumn(FAMILY, Bytes.toBytes("C"))).get();
     assertEquals("g", Bytes.toString(result.getValue(FAMILY, Bytes.toBytes("C"))));
diff --git a/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestAsyncTableBatch.java b/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestAsyncTableBatch.java
index ac82314..cb53f30 100644
--- a/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestAsyncTableBatch.java
+++ b/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestAsyncTableBatch.java
@@ -367,11 +367,11 @@ public class TestAsyncTableBatch {
     List<Row> actions = Arrays.asList(checkAndMutate1, get, mutations, checkAndMutate2, put);
     List<Object> results = table.batchAll(actions).get();
 
-    assertTrue(((Result) results.get(0)).getExists());
+    assertTrue(((CheckAndMutateResult) results.get(0)).isSuccess());
     assertEquals("b",
       Bytes.toString(((Result) results.get(1)).getValue(FAMILY, Bytes.toBytes("B"))));
     assertTrue(((Result) results.get(2)).getExists());
-    assertFalse(((Result) results.get(3)).getExists());
+    assertFalse(((CheckAndMutateResult) results.get(3)).isSuccess());
     assertTrue(((Result) results.get(4)).isEmpty());
 
     Result result = table.get(new Get(row1)).get();
diff --git a/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestCheckAndMutate.java b/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestCheckAndMutate.java
index 67dad19..72524c4 100644
--- a/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestCheckAndMutate.java
+++ b/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestCheckAndMutate.java
@@ -26,6 +26,7 @@ import static org.junit.Assert.fail;
 import java.io.IOException;
 import java.util.Arrays;
 import java.util.Collections;
+import java.util.List;
 import org.apache.hadoop.hbase.CompareOperator;
 import org.apache.hadoop.hbase.HBaseClassTestRule;
 import org.apache.hadoop.hbase.HBaseTestingUtility;
@@ -367,10 +368,10 @@ public class TestCheckAndMutate {
 
       // put the same row again with C column deleted
       RowMutations rm = makeRowMutationsWithColumnCDeleted();
-      boolean res = table.checkAndMutate(CheckAndMutate.newBuilder(ROWKEY)
+      CheckAndMutateResult res = table.checkAndMutate(CheckAndMutate.newBuilder(ROWKEY)
         .ifEquals(FAMILY, Bytes.toBytes("A"), Bytes.toBytes("a"))
         .build(rm));
-      assertTrue(res);
+      assertTrue(res.isSuccess());
 
       // get row back and assert the values
       getOneRowAndAssertAllButCExist(table);
@@ -401,45 +402,45 @@ public class TestCheckAndMutate {
       getOneRowAndAssertAllExist(table);
 
       // Put with success
-      boolean ok = table.checkAndMutate(CheckAndMutate.newBuilder(ROWKEY)
+      CheckAndMutateResult result = table.checkAndMutate(CheckAndMutate.newBuilder(ROWKEY)
         .ifMatches(new SingleColumnValueFilter(FAMILY,
           Bytes.toBytes("A"), CompareOperator.EQUAL, Bytes.toBytes("a")))
         .build(new Put(ROWKEY).addColumn(FAMILY, Bytes.toBytes("D"), Bytes.toBytes("d"))));
-      assertTrue(ok);
+      assertTrue(result.isSuccess());
 
-      Result result = table.get(new Get(ROWKEY).addColumn(FAMILY, Bytes.toBytes("D")));
-      assertEquals("d", Bytes.toString(result.getValue(FAMILY, Bytes.toBytes("D"))));
+      Result r = table.get(new Get(ROWKEY).addColumn(FAMILY, Bytes.toBytes("D")));
+      assertEquals("d", Bytes.toString(r.getValue(FAMILY, Bytes.toBytes("D"))));
 
       // Put with failure
-      ok = table.checkAndMutate(CheckAndMutate.newBuilder(ROWKEY)
+      result = table.checkAndMutate(CheckAndMutate.newBuilder(ROWKEY)
         .ifMatches(new SingleColumnValueFilter(FAMILY, Bytes.toBytes("A"),
         CompareOperator.EQUAL, Bytes.toBytes("b")))
         .build(new Put(ROWKEY).addColumn(FAMILY, Bytes.toBytes("E"), Bytes.toBytes("e"))));
-      assertFalse(ok);
+      assertFalse(result.isSuccess());
 
       assertFalse(table.exists(new Get(ROWKEY).addColumn(FAMILY, Bytes.toBytes("E"))));
 
       // Delete with success
-      ok = table.checkAndMutate(CheckAndMutate.newBuilder(ROWKEY)
+      result = table.checkAndMutate(CheckAndMutate.newBuilder(ROWKEY)
         .ifMatches(new SingleColumnValueFilter(FAMILY, Bytes.toBytes("A"),
           CompareOperator.EQUAL, Bytes.toBytes("a")))
         .build(new Delete(ROWKEY).addColumns(FAMILY, Bytes.toBytes("D"))));
-      assertTrue(ok);
+      assertTrue(result.isSuccess());
 
       assertFalse(table.exists(new Get(ROWKEY).addColumn(FAMILY, Bytes.toBytes("D"))));
 
       // Mutate with success
-      ok = table.checkAndMutate(CheckAndMutate.newBuilder(ROWKEY)
+      result = table.checkAndMutate(CheckAndMutate.newBuilder(ROWKEY)
         .ifMatches(new SingleColumnValueFilter(FAMILY, Bytes.toBytes("B"),
           CompareOperator.EQUAL, Bytes.toBytes("b")))
         .build(new RowMutations(ROWKEY)
           .add((Mutation) new Put(ROWKEY)
             .addColumn(FAMILY, Bytes.toBytes("D"), Bytes.toBytes("d")))
           .add((Mutation) new Delete(ROWKEY).addColumns(FAMILY, Bytes.toBytes("A")))));
-      assertTrue(ok);
+      assertTrue(result.isSuccess());
 
-      result = table.get(new Get(ROWKEY).addColumn(FAMILY, Bytes.toBytes("D")));
-      assertEquals("d", Bytes.toString(result.getValue(FAMILY, Bytes.toBytes("D"))));
+      r = table.get(new Get(ROWKEY).addColumn(FAMILY, Bytes.toBytes("D")));
+      assertEquals("d", Bytes.toString(r.getValue(FAMILY, Bytes.toBytes("D"))));
 
       assertFalse(table.exists(new Get(ROWKEY).addColumn(FAMILY, Bytes.toBytes("A"))));
     }
@@ -454,44 +455,44 @@ public class TestCheckAndMutate {
       getOneRowAndAssertAllExist(table);
 
       // Put with success
-      boolean ok = table.checkAndMutate(CheckAndMutate.newBuilder(ROWKEY)
+      CheckAndMutateResult result = table.checkAndMutate(CheckAndMutate.newBuilder(ROWKEY)
         .ifMatches(new FilterList(
           new SingleColumnValueFilter(FAMILY, Bytes.toBytes("A"), CompareOperator.EQUAL,
             Bytes.toBytes("a")),
           new SingleColumnValueFilter(FAMILY, Bytes.toBytes("B"), CompareOperator.EQUAL,
             Bytes.toBytes("b"))))
         .build(new Put(ROWKEY).addColumn(FAMILY, Bytes.toBytes("D"), Bytes.toBytes("d"))));
-      assertTrue(ok);
+      assertTrue(result.isSuccess());
 
-      Result result = table.get(new Get(ROWKEY).addColumn(FAMILY, Bytes.toBytes("D")));
-      assertEquals("d", Bytes.toString(result.getValue(FAMILY, Bytes.toBytes("D"))));
+      Result r = table.get(new Get(ROWKEY).addColumn(FAMILY, Bytes.toBytes("D")));
+      assertEquals("d", Bytes.toString(r.getValue(FAMILY, Bytes.toBytes("D"))));
 
       // Put with failure
-      ok = table.checkAndMutate(CheckAndMutate.newBuilder(ROWKEY)
+      result = table.checkAndMutate(CheckAndMutate.newBuilder(ROWKEY)
         .ifMatches(new FilterList(
           new SingleColumnValueFilter(FAMILY, Bytes.toBytes("A"), CompareOperator.EQUAL,
             Bytes.toBytes("a")),
           new SingleColumnValueFilter(FAMILY, Bytes.toBytes("B"), CompareOperator.EQUAL,
             Bytes.toBytes("c"))))
         .build(new Put(ROWKEY).addColumn(FAMILY, Bytes.toBytes("E"), Bytes.toBytes("e"))));
-      assertFalse(ok);
+      assertFalse(result.isSuccess());
 
       assertFalse(table.exists(new Get(ROWKEY).addColumn(FAMILY, Bytes.toBytes("E"))));
 
       // Delete with success
-      ok = table.checkAndMutate(CheckAndMutate.newBuilder(ROWKEY)
+      result = table.checkAndMutate(CheckAndMutate.newBuilder(ROWKEY)
         .ifMatches(new FilterList(
             new SingleColumnValueFilter(FAMILY, Bytes.toBytes("A"), CompareOperator.EQUAL,
               Bytes.toBytes("a")),
             new SingleColumnValueFilter(FAMILY, Bytes.toBytes("B"), CompareOperator.EQUAL,
               Bytes.toBytes("b"))))
         .build(new Delete(ROWKEY).addColumns(FAMILY, Bytes.toBytes("D"))));
-      assertTrue(ok);
+      assertTrue(result.isSuccess());
 
       assertFalse(table.exists(new Get(ROWKEY).addColumn(FAMILY, Bytes.toBytes("D"))));
 
       // Mutate with success
-      ok = table.checkAndMutate(CheckAndMutate.newBuilder(ROWKEY)
+      result = table.checkAndMutate(CheckAndMutate.newBuilder(ROWKEY)
         .ifMatches(new FilterList(
           new SingleColumnValueFilter(FAMILY, Bytes.toBytes("A"), CompareOperator.EQUAL,
             Bytes.toBytes("a")),
@@ -501,10 +502,10 @@ public class TestCheckAndMutate {
           .add((Mutation) new Put(ROWKEY)
             .addColumn(FAMILY, Bytes.toBytes("D"), Bytes.toBytes("d")))
           .add((Mutation) new Delete(ROWKEY).addColumns(FAMILY, Bytes.toBytes("A")))));
-      assertTrue(ok);
+      assertTrue(result.isSuccess());
 
-      result = table.get(new Get(ROWKEY).addColumn(FAMILY, Bytes.toBytes("D")));
-      assertEquals("d", Bytes.toString(result.getValue(FAMILY, Bytes.toBytes("D"))));
+      r = table.get(new Get(ROWKEY).addColumn(FAMILY, Bytes.toBytes("D")));
+      assertEquals("d", Bytes.toString(r.getValue(FAMILY, Bytes.toBytes("D"))));
 
       assertFalse(table.exists(new Get(ROWKEY).addColumn(FAMILY, Bytes.toBytes("A"))));
     }
@@ -517,25 +518,25 @@ public class TestCheckAndMutate {
       table.put(new Put(ROWKEY).addColumn(FAMILY, Bytes.toBytes("A"), 100, Bytes.toBytes("a")));
 
       // Put with success
-      boolean ok = table.checkAndMutate(CheckAndMutate.newBuilder(ROWKEY)
+      CheckAndMutateResult result = table.checkAndMutate(CheckAndMutate.newBuilder(ROWKEY)
         .ifMatches(new FilterList(
           new FamilyFilter(CompareOperator.EQUAL, new BinaryComparator(FAMILY)),
           new QualifierFilter(CompareOperator.EQUAL, new BinaryComparator(Bytes.toBytes("A"))),
           new TimestampsFilter(Collections.singletonList(100L))))
         .build(new Put(ROWKEY).addColumn(FAMILY, Bytes.toBytes("B"), Bytes.toBytes("b"))));
-      assertTrue(ok);
+      assertTrue(result.isSuccess());
 
-      Result result = table.get(new Get(ROWKEY).addColumn(FAMILY, Bytes.toBytes("B")));
-      assertEquals("b", Bytes.toString(result.getValue(FAMILY, Bytes.toBytes("B"))));
+      Result r = table.get(new Get(ROWKEY).addColumn(FAMILY, Bytes.toBytes("B")));
+      assertEquals("b", Bytes.toString(r.getValue(FAMILY, Bytes.toBytes("B"))));
 
       // Put with failure
-      ok = table.checkAndMutate(CheckAndMutate.newBuilder(ROWKEY)
+      result = table.checkAndMutate(CheckAndMutate.newBuilder(ROWKEY)
         .ifMatches(new FilterList(
           new FamilyFilter(CompareOperator.EQUAL, new BinaryComparator(FAMILY)),
           new QualifierFilter(CompareOperator.EQUAL, new BinaryComparator(Bytes.toBytes("A"))),
           new TimestampsFilter(Collections.singletonList(101L))))
         .build(new Put(ROWKEY).addColumn(FAMILY, Bytes.toBytes("C"), Bytes.toBytes("c"))));
-      assertFalse(ok);
+      assertFalse(result.isSuccess());
 
       assertFalse(table.exists(new Get(ROWKEY).addColumn(FAMILY, Bytes.toBytes("C"))));
     }
@@ -548,23 +549,23 @@ public class TestCheckAndMutate {
       table.put(new Put(ROWKEY).addColumn(FAMILY, Bytes.toBytes("A"), 100, Bytes.toBytes("a")));
 
       // Put with success
-      boolean ok = table.checkAndMutate(CheckAndMutate.newBuilder(ROWKEY)
+      CheckAndMutateResult result = table.checkAndMutate(CheckAndMutate.newBuilder(ROWKEY)
         .ifMatches(new SingleColumnValueFilter(FAMILY,
           Bytes.toBytes("A"), CompareOperator.EQUAL, Bytes.toBytes("a")))
         .timeRange(TimeRange.between(0, 101))
         .build(new Put(ROWKEY).addColumn(FAMILY, Bytes.toBytes("B"), Bytes.toBytes("b"))));
-      assertTrue(ok);
+      assertTrue(result.isSuccess());
 
-      Result result = table.get(new Get(ROWKEY).addColumn(FAMILY, Bytes.toBytes("B")));
-      assertEquals("b", Bytes.toString(result.getValue(FAMILY, Bytes.toBytes("B"))));
+      Result r = table.get(new Get(ROWKEY).addColumn(FAMILY, Bytes.toBytes("B")));
+      assertEquals("b", Bytes.toString(r.getValue(FAMILY, Bytes.toBytes("B"))));
 
       // Put with failure
-      ok = table.checkAndMutate(CheckAndMutate.newBuilder(ROWKEY)
+      result = table.checkAndMutate(CheckAndMutate.newBuilder(ROWKEY)
         .ifMatches(new SingleColumnValueFilter(FAMILY, Bytes.toBytes("A"),
           CompareOperator.EQUAL, Bytes.toBytes("a")))
         .timeRange(TimeRange.between(0, 100))
         .build(new Put(ROWKEY).addColumn(FAMILY, Bytes.toBytes("C"), Bytes.toBytes("c"))));
-      assertFalse(ok);
+      assertFalse(result.isSuccess());
 
       assertFalse(table.exists(new Get(ROWKEY).addColumn(FAMILY, Bytes.toBytes("C"))));
     }
@@ -596,10 +597,11 @@ public class TestCheckAndMutate {
         .ifEquals(FAMILY, Bytes.toBytes("B"), Bytes.toBytes("a"))
         .build(new Put(ROWKEY2).addColumn(FAMILY, Bytes.toBytes("B"), Bytes.toBytes("f")));
 
-      boolean[] results = table.checkAndMutate(Arrays.asList(checkAndMutate1, checkAndMutate2));
+      List<CheckAndMutateResult> results =
+        table.checkAndMutate(Arrays.asList(checkAndMutate1, checkAndMutate2));
 
-      assertTrue(results[0]);
-      assertFalse(results[1]);
+      assertTrue(results.get(0).isSuccess());
+      assertFalse(results.get(1).isSuccess());
 
       Result result = table.get(new Get(ROWKEY).addColumn(FAMILY, Bytes.toBytes("A")));
       assertEquals("e", Bytes.toString(result.getValue(FAMILY, Bytes.toBytes("A"))));
@@ -618,8 +620,8 @@ public class TestCheckAndMutate {
 
       results = table.checkAndMutate(Arrays.asList(checkAndMutate1, checkAndMutate2));
 
-      assertTrue(results[0]);
-      assertFalse(results[1]);
+      assertTrue(results.get(0).isSuccess());
+      assertFalse(results.get(1).isSuccess());
 
       assertFalse(table.exists(new Get(ROWKEY).addColumn(FAMILY, Bytes.toBytes("A"))));
 
@@ -643,8 +645,8 @@ public class TestCheckAndMutate {
 
       results = table.checkAndMutate(Arrays.asList(checkAndMutate1, checkAndMutate2));
 
-      assertTrue(results[0]);
-      assertFalse(results[1]);
+      assertTrue(results.get(0).isSuccess());
+      assertFalse(results.get(1).isSuccess());
 
       result = table.get(new Get(ROWKEY3));
       assertEquals("f", Bytes.toString(result.getValue(FAMILY, Bytes.toBytes("F"))));
@@ -674,10 +676,11 @@ public class TestCheckAndMutate {
         .ifNotExists(FAMILY, Bytes.toBytes("B"))
         .build(new Put(ROWKEY2).addColumn(FAMILY, Bytes.toBytes("B"), Bytes.toBytes("f")));
 
-      boolean[] results = table.checkAndMutate(Arrays.asList(checkAndMutate1, checkAndMutate2));
+      List<CheckAndMutateResult> results =
+        table.checkAndMutate(Arrays.asList(checkAndMutate1, checkAndMutate2));
 
-      assertTrue(results[0]);
-      assertFalse(results[1]);
+      assertTrue(results.get(0).isSuccess());
+      assertFalse(results.get(1).isSuccess());
 
       Result result = table.get(new Get(ROWKEY).addColumn(FAMILY, Bytes.toBytes("A")));
       assertEquals("e", Bytes.toString(result.getValue(FAMILY, Bytes.toBytes("A"))));
@@ -696,8 +699,8 @@ public class TestCheckAndMutate {
 
       results = table.checkAndMutate(Arrays.asList(checkAndMutate1, checkAndMutate2));
 
-      assertTrue(results[0]);
-      assertFalse(results[1]);
+      assertTrue(results.get(0).isSuccess());
+      assertFalse(results.get(1).isSuccess());
 
       result = table.get(new Get(ROWKEY).addColumn(FAMILY, Bytes.toBytes("A")));
       assertEquals("a", Bytes.toString(result.getValue(FAMILY, Bytes.toBytes("A"))));
@@ -718,8 +721,8 @@ public class TestCheckAndMutate {
 
       results = table.checkAndMutate(Arrays.asList(checkAndMutate1, checkAndMutate2));
 
-      assertTrue(results[0]);
-      assertFalse(results[1]);
+      assertTrue(results.get(0).isSuccess());
+      assertFalse(results.get(1).isSuccess());
 
       result = table.get(new Get(ROWKEY3).addColumn(FAMILY, Bytes.toBytes("C")));
       assertEquals("e", Bytes.toString(result.getValue(FAMILY, Bytes.toBytes("C"))));
@@ -759,10 +762,11 @@ public class TestCheckAndMutate {
             Bytes.toBytes("b"))))
         .build(new Put(ROWKEY2).addColumn(FAMILY, Bytes.toBytes("F"), Bytes.toBytes("h")));
 
-      boolean[] results = table.checkAndMutate(Arrays.asList(checkAndMutate1, checkAndMutate2));
+      List<CheckAndMutateResult> results =
+        table.checkAndMutate(Arrays.asList(checkAndMutate1, checkAndMutate2));
 
-      assertTrue(results[0]);
-      assertFalse(results[1]);
+      assertTrue(results.get(0).isSuccess());
+      assertFalse(results.get(1).isSuccess());
 
       Result result = table.get(new Get(ROWKEY).addColumn(FAMILY, Bytes.toBytes("C")));
       assertEquals("g", Bytes.toString(result.getValue(FAMILY, Bytes.toBytes("C"))));
@@ -789,8 +793,8 @@ public class TestCheckAndMutate {
 
       results = table.checkAndMutate(Arrays.asList(checkAndMutate1, checkAndMutate2));
 
-      assertTrue(results[0]);
-      assertFalse(results[1]);
+      assertTrue(results.get(0).isSuccess());
+      assertFalse(results.get(1).isSuccess());
 
       assertFalse(table.exists(new Get(ROWKEY).addColumn(FAMILY, Bytes.toBytes("C"))));
 
@@ -822,8 +826,8 @@ public class TestCheckAndMutate {
 
       results = table.checkAndMutate(Arrays.asList(checkAndMutate1, checkAndMutate2));
 
-      assertTrue(results[0]);
-      assertFalse(results[1]);
+      assertTrue(results.get(0).isSuccess());
+      assertFalse(results.get(1).isSuccess());
 
       result = table.get(new Get(ROWKEY));
       assertNull(result.getValue(FAMILY, Bytes.toBytes("A")));
@@ -864,10 +868,11 @@ public class TestCheckAndMutate {
         .timeRange(TimeRange.between(0, 100))
         .build(new Put(ROWKEY2).addColumn(FAMILY, Bytes.toBytes("F"), Bytes.toBytes("h")));
 
-      boolean[] results = table.checkAndMutate(Arrays.asList(checkAndMutate1, checkAndMutate2));
+      List<CheckAndMutateResult> results =
+        table.checkAndMutate(Arrays.asList(checkAndMutate1, checkAndMutate2));
 
-      assertTrue(results[0]);
-      assertFalse(results[1]);
+      assertTrue(results.get(0).isSuccess());
+      assertFalse(results.get(1).isSuccess());
 
       Result result = table.get(new Get(ROWKEY).addColumn(FAMILY, Bytes.toBytes("C")));
       assertEquals("g", Bytes.toString(result.getValue(FAMILY, Bytes.toBytes("C"))));
diff --git a/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestFromClientSide3.java b/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestFromClientSide3.java
index ffe1fb7..f14b0a0 100644
--- a/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestFromClientSide3.java
+++ b/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestFromClientSide3.java
@@ -516,11 +516,11 @@ public class TestFromClientSide3 {
       Object[] results = new Object[actions.size()];
       table.batch(actions, results);
 
-      assertTrue(((Result) results[0]).getExists());
+      assertTrue(((CheckAndMutateResult) results[0]).isSuccess());
       assertEquals("b",
         Bytes.toString(((Result) results[1]).getValue(FAMILY, Bytes.toBytes("B"))));
       assertTrue(((Result) results[2]).getExists());
-      assertFalse(((Result) results[3]).getExists());
+      assertFalse(((CheckAndMutateResult) results[3]).isSuccess());
       assertTrue(((Result) results[4]).isEmpty());
 
       Result result = table.get(new Get(row1));
diff --git a/hbase-thrift/src/main/java/org/apache/hadoop/hbase/thrift2/client/ThriftTable.java b/hbase-thrift/src/main/java/org/apache/hadoop/hbase/thrift2/client/ThriftTable.java
index 9d94080..9469f26 100644
--- a/hbase-thrift/src/main/java/org/apache/hadoop/hbase/thrift2/client/ThriftTable.java
+++ b/hbase-thrift/src/main/java/org/apache/hadoop/hbase/thrift2/client/ThriftTable.java
@@ -37,6 +37,7 @@ import org.apache.hadoop.hbase.HConstants;
 import org.apache.hadoop.hbase.TableName;
 import org.apache.hadoop.hbase.client.Append;
 import org.apache.hadoop.hbase.client.CheckAndMutate;
+import org.apache.hadoop.hbase.client.CheckAndMutateResult;
 import org.apache.hadoop.hbase.client.Delete;
 import org.apache.hadoop.hbase.client.Get;
 import org.apache.hadoop.hbase.client.Increment;
@@ -436,12 +437,12 @@ public class ThriftTable implements Table {
   }
 
   @Override
-  public boolean checkAndMutate(CheckAndMutate checkAndMutate) {
+  public CheckAndMutateResult checkAndMutate(CheckAndMutate checkAndMutate) {
     throw new NotImplementedException("Implement later");
   }
 
   @Override
-  public boolean[] checkAndMutate(List<CheckAndMutate> checkAndMutates) {
+  public List<CheckAndMutateResult> checkAndMutate(List<CheckAndMutate> checkAndMutates) {
     throw new NotImplementedException("Implement later");
   }