Duo Zhang created HBASE-21715:
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             Summary: Do not throw UnsupportedOperationException in 
ProcedureFuture.get
                 Key: HBASE-21715
                 URL: https://issues.apache.org/jira/browse/HBASE-21715
             Project: HBase
          Issue Type: Task
            Reporter: Duo Zhang


This is really a bad practice, no one would expected that a Future does not 
support get, and this can not be detected at compile time. Even though we do 
not want user to wait for ever, we could set a long timeout, for example, 10 
minutes,instead of throwing UnsuportedOperationException. I've already been 
hurt many times...



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