Bikramjeet Vig created IMPALA-6894:
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             Summary: Use an internal representation of query states in 
ClientRequestState
                 Key: IMPALA-6894
                 URL: https://issues.apache.org/jira/browse/IMPALA-6894
             Project: IMPALA
          Issue Type: Sub-task
            Reporter: Bikramjeet Vig


Having an internal representation of states will be useful as we can 
conveniently add/remove new states and develop logic around those eg. 
[initialization, analysis complete, planning complete/queued, running] (set the 
stage for IMPALA-2568 and its sub-tasks), [cancelled, exception etc] 
(IMPALA-1262).
We can easily convert it to client (HS2 and Beeswax) specific states and ensure 
there are no client visible changes.



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