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Posted to issues@drill.apache.org by "Dechang Gu (JIRA)" <ji...@apache.org> on 2017/10/31 21:03:00 UTC

[jira] [Commented] (DRILL-5468) TPCH Q18 regressed ~3x due to execution plan changes

    [ https://issues.apache.org/jira/browse/DRILL-5468?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16227570#comment-16227570 ] 

Dechang Gu commented on DRILL-5468:
-----------------------------------

I tried this setting on SF100, Q18 did not show the 3x regression, performance is on par with previous normal runs.

> TPCH Q18 regressed ~3x due to execution plan changes
> ----------------------------------------------------
>
>                 Key: DRILL-5468
>                 URL: https://issues.apache.org/jira/browse/DRILL-5468
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: Functions - Drill
>    Affects Versions: 1.11.0
>         Environment: 10+1 node ucs-micro cluster RHEL6.4
>            Reporter: Dechang Gu
>            Assignee: Jinfeng Ni
>         Attachments: Q18_profile_gitid_841ead4, Q18_profile_gitid_adbf363
>
>
> In a regular regression test on Drill master (commit id 841ead4) TPCH Q18 on SF100 parquet dataset took ~81 secs, while the same query on 1.10.0 took only ~27 secs.  The query time on the commit adbf363 which is right before 841ead4 is ~32 secs.
> Profiles shows the plans for the query changed quite a bit (profiles will be uploaded) 



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