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Posted to issues@impala.apache.org by "Qifan Chen (Jira)" <ji...@apache.org> on 2021/06/09 15:38:00 UTC

[jira] [Closed] (IMPALA-10650) Bail out min/max filters in hash join builder early

     [ https://issues.apache.org/jira/browse/IMPALA-10650?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Qifan Chen closed IMPALA-10650.
-------------------------------
    Fix Version/s: Impala 4.0
       Resolution: Fixed

> Bail out min/max filters in hash join builder early 
> ----------------------------------------------------
>
>                 Key: IMPALA-10650
>                 URL: https://issues.apache.org/jira/browse/IMPALA-10650
>             Project: IMPALA
>          Issue Type: Improvement
>            Reporter: Qifan Chen
>            Assignee: Qifan Chen
>            Priority: Major
>             Fix For: Impala 4.0
>
>
> Currently, a mechanism is in place to set a min/max filter to always true (not useful) after all batches of rows are inserted into the hash table, utilizing the column stats.  While quite helpful, the mechanism does not exploit the property that the same not useful state can be reached as soon as several batches are inserted. 



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