hive-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Zoltan Haindrich (Jira)" <j...@apache.org>
Subject [jira] [Resolved] (HIVE-25370) Improve SharedWorkOptimizer performance
Date Wed, 28 Jul 2021 08:02:00 GMT

     [ https://issues.apache.org/jira/browse/HIVE-25370?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Zoltan Haindrich resolved HIVE-25370.
-------------------------------------
    Fix Version/s: 4.0.0
       Resolution: Fixed

merged into master. Thank you Krisztian for reviewing the changes!

> Improve SharedWorkOptimizer performance
> ---------------------------------------
>
>                 Key: HIVE-25370
>                 URL: https://issues.apache.org/jira/browse/HIVE-25370
>             Project: Hive
>          Issue Type: Improvement
>            Reporter: Zoltan Haindrich
>            Assignee: Zoltan Haindrich
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 4.0.0
>
>          Time Spent: 40m
>  Remaining Estimate: 0h
>
> for queries which are unioning ~800 constant rows the SWO is doing around n*n/2 operations
trying to find 2 TS-es which could be merged
> {code}
> select constants
> UNION ALL
> ...
> UNION ALL
> select constants
> {code}



--
This message was sent by Atlassian Jira
(v8.3.4#803005)

Mime
View raw message