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Posted to issues@impala.apache.org by "Tim Armstrong (Jira)" <ji...@apache.org> on 2019/10/17 00:18:00 UTC

[jira] [Resolved] (IMPALA-8998) Admission control accounting for mt_dop

     [ https://issues.apache.org/jira/browse/IMPALA-8998?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tim Armstrong resolved IMPALA-8998.
-----------------------------------
    Fix Version/s: Impala 3.4.0
       Resolution: Fixed

> Admission control accounting for mt_dop
> ---------------------------------------
>
>                 Key: IMPALA-8998
>                 URL: https://issues.apache.org/jira/browse/IMPALA-8998
>             Project: IMPALA
>          Issue Type: Sub-task
>          Components: Backend
>            Reporter: Tim Armstrong
>            Assignee: Tim Armstrong
>            Priority: Major
>             Fix For: Impala 3.4.0
>
>
> We should account for the degree of parallelism that the query runs with on a backend to avoid overadmitting too many parallel queries. 
> We could probably simply count the effective degree of parallelism (max # instances of a fragment on that backend) toward the number of slots in admission control (although slots are not enabled for the default group yet - see IMPALA-8757).



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