[jira] [Created] (HBASE-21829) Use FutureUtils.addListener instead of calling whenComplete directly

[Duo Zhang (JIRA)]

Duo Zhang created HBASE-21829:
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             Summary: Use FutureUtils.addListener instead of calling 
whenComplete directly
                 Key: HBASE-21829
                 URL: https://issues.apache.org/jira/browse/HBASE-21829
             Project: HBase
          Issue Type: Sub-task
            Reporter: Duo Zhang


This can eliminate the FutureReturnValueIgnored  warnings, and also we can do 
the CompletionFuture unwrap in the addListener method to avoid doing it 
everywhere.



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