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From "James Taylor (JIRA)" <j...@apache.org>
Subject [jira] [Created] (PHOENIX-3995) Use medium priority for UPSERT SELECT distributed across cluster
Date Thu, 06 Jul 2017 04:51:00 GMT
James Taylor created PHOENIX-3995:
-------------------------------------

             Summary: Use medium priority for UPSERT SELECT distributed across cluster
                 Key: PHOENIX-3995
                 URL: https://issues.apache.org/jira/browse/PHOENIX-3995
             Project: Phoenix
          Issue Type: Bug
            Reporter: James Taylor
            Assignee: Samarth Jain


An UPSERT SELECT that is running on the server-side should use a medium priority (lower than
index priority but higher than normal priority) to prevent deadlocks. If we use the index
priority, then there's a danger of deadlocks occurring if the table being upserted into also
as indexes (as the index updates would be processed at the index priority).



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