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Posted to issues@impala.apache.org by "Abhishek Rawat (JIRA)" <ji...@apache.org> on 2019/07/03 17:56:00 UTC

[jira] [Resolved] (IMPALA-8673) Add query option to force plan hints for insert queries

     [ https://issues.apache.org/jira/browse/IMPALA-8673?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Abhishek Rawat resolved IMPALA-8673.
------------------------------------
       Resolution: Fixed
    Fix Version/s: Impala 3.3.0

> Add query option to force plan hints for insert queries
> -------------------------------------------------------
>
>                 Key: IMPALA-8673
>                 URL: https://issues.apache.org/jira/browse/IMPALA-8673
>             Project: IMPALA
>          Issue Type: Improvement
>          Components: Backend, Frontend
>    Affects Versions: Impala 3.3.0
>            Reporter: Lars Volker
>            Assignee: Abhishek Rawat
>            Priority: Major
>              Labels: perfomance, ramp-up, regression
>             Fix For: Impala 3.3.0
>
>
> In Impala 3.0 we turned on insert clustering by default (IMPALA-5293). This can lead to performance regressions from 2.x for highly skewed data sets. To help with those cases, we should add a way to force plan hints for insert queries through a query option.



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