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Posted to issues@impala.apache.org by "Tim Armstrong (Jira)" <ji...@apache.org> on 2019/10/24 06:29:00 UTC

[jira] [Resolved] (IMPALA-8999) Parallelise all plans, including UNION, when mt_dop > 1

     [ https://issues.apache.org/jira/browse/IMPALA-8999?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tim Armstrong resolved IMPALA-8999.
-----------------------------------
    Fix Version/s: Impala 3.4.0
       Resolution: Fixed

> Parallelise all plans, including UNION, when mt_dop > 1
> -------------------------------------------------------
>
>                 Key: IMPALA-8999
>                 URL: https://issues.apache.org/jira/browse/IMPALA-8999
>             Project: IMPALA
>          Issue Type: Sub-task
>          Components: Distributed Exec
>            Reporter: Tim Armstrong
>            Assignee: Tim Armstrong
>            Priority: Major
>             Fix For: Impala 3.4.0
>
>
> We should do another pass over the scheduler to make sure that the logic makes sense for mt_dop.
> There are some comments in scheduler.cc, e.g. talking about optimisations for UNION.



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