drcrallen commented on a change in pull request #5492: Native parallel batch 
indexing without shuffle
URL: https://github.com/apache/incubator-druid/pull/5492#discussion_r201761583
 
 

 ##########
 File path: 
extensions-core/kafka-indexing-service/src/main/java/io/druid/indexing/kafka/KafkaIndexTaskClient.java
 ##########
 @@ -362,317 +288,70 @@ public boolean setEndOffsets(
     log.debug("SetEndOffsets task[%s] endOffsets[%s] finalize[%s]", id, 
endOffsets, finalize);
 
     try {
-      final FullResponseHolder response = submitRequest(
+      final FullResponseHolder response = submitJsonRequest(
           id,
           HttpMethod.POST,
           "offsets/end",
           StringUtils.format("finish=%s", finalize),
-          jsonMapper.writeValueAsBytes(endOffsets),
+          serialize(endOffsets),
           true
       );
-      return response.getStatus().getCode() / 100 == 2;
+      return isSuccess(response);
     }
     catch (NoTaskLocationException e) {
       return false;
     }
     catch (IOException e) {
-      throw new RuntimeException(e);
+      throw Throwables.propagate(e);
     }
   }
 
   public ListenableFuture<Boolean> stopAsync(final String id, final boolean 
publish)
   {
-    return executorService.submit(
-        new Callable<Boolean>()
-        {
-          @Override
-          public Boolean call()
-          {
-            return stop(id, publish);
-          }
-        }
-    );
+    return doAsync(() -> stop(id, publish));
   }
 
   public ListenableFuture<Boolean> resumeAsync(final String id)
   {
-    return executorService.submit(
-        new Callable<Boolean>()
-        {
-          @Override
-          public Boolean call()
-          {
-            return resume(id);
-          }
-        }
-    );
+    return doAsync(() -> resume(id));
 
 Review comment:
   (out of scope for this PR) since java has native completable futures now, do 
these need to be listenable futures?

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