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Posted to dev@phoenix.apache.org by "Thomas D'Silva (JIRA)" <ji...@apache.org> on 2019/01/08 23:02:00 UTC

[jira] [Updated] (PHOENIX-3995) Use medium priority for UPSERT SELECT distributed across cluster

     [ https://issues.apache.org/jira/browse/PHOENIX-3995?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Thomas D'Silva updated PHOENIX-3995:
------------------------------------
    Fix Version/s:     (was: 4.15.0)

> 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
>            Priority: Major
>
> 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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