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From "Allan Yang (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-16283) Batch Append/Increment will always fail if set ReturnResults to false
Date Tue, 26 Jul 2016 02:45:20 GMT
Allan Yang created HBASE-16283:
----------------------------------

             Summary: Batch Append/Increment will always fail if set ReturnResults to false
                 Key: HBASE-16283
                 URL: https://issues.apache.org/jira/browse/HBASE-16283
             Project: HBase
          Issue Type: Bug
          Components: API
    Affects Versions: 1.2.2, 1.1.5, 2.0.0
            Reporter: Allan Yang
            Priority: Minor
             Fix For: 2.0.0


If set Append/Increment's ReturnResult attribute to false, and batch the appends/increments
to server. The batch operation will always return false.
The reason is that, since return result is set to false, append/increment will return null
instead of Result object. But in ResponseConverter#getResults, there is some check code 
{code}
if (requestRegionActionCount != responseRegionActionResultCount) {
      throw new IllegalStateException("Request mutation count=" + requestRegionActionCount
+
          " does not match response mutation result count=" + responseRegionActionResultCount);
    }
{code}
That means if the result count is not meat with request mutation count, it will fail the request.
The solution is simple, instead of returning a null result, return a empty result if ReturnResult
set to null.



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