[jira] [Created] (HBASE-13646) HRegion#execService should not try to build incomplete messages

["Andrey Stepachev (JIRA)" <ji...@apache.org>]

Andrey Stepachev created HBASE-13646:
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             Summary: HRegion#execService should not try to build incomplete messages
                 Key: HBASE-13646
                 URL: https://issues.apache.org/jira/browse/HBASE-13646
             Project: HBase
          Issue Type: Bug
          Components: Coprocessors, regionserver
    Affects Versions: 2.0.0, 1.2.0, 1.1.1
            Reporter: Andrey Stepachev
            Assignee: Andrey Stepachev


If some RPC service, called on region throws exception, execService still tries to build Message. In case of complex messages with required fields it complicates service code because service need to pass fake protobuf objects, so they can be barely buildable. 
To mitigate that I propose to check that controller was failed and return null from call instead of failing with exception.

Sure, we can go other direction and throw exception right from execService. Let me know if you think that it is better that what I did in provided patch.



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