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From "Dimitris Tsirogiannis (JIRA)" <j...@apache.org>
Subject [jira] [Created] (IMPALA-5147) Add the ability to exclude coordinators from query execution
Date Fri, 31 Mar 2017 18:14:41 GMT
Dimitris Tsirogiannis created IMPALA-5147:
---------------------------------------------

             Summary: Add the ability to exclude coordinators from query execution
                 Key: IMPALA-5147
                 URL: https://issues.apache.org/jira/browse/IMPALA-5147
             Project: IMPALA
          Issue Type: Sub-task
            Reporter: Dimitris Tsirogiannis
            Assignee: Dimitris Tsirogiannis


The fix for IMPALA-4041 added the ability to limit the set of nodes that can coordinate Impala
queries and hence receive catalog updates. However, with this change coordinators can and
will still participate in query execution. That may introduce in some cases significant load
in the coordinator node. To address this issue, we should introduce another flag, termed is_executor,
to exclude certain nodes from participating in query execution. 



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