[jira] [Resolved] (HIVE-24812) Disable sharedworkoptimizer remove semijoin by default

["Zoltan Haindrich (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-24812?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Zoltan Haindrich resolved HIVE-24812.
-------------------------------------
    Fix Version/s: 4.0.0
       Resolution: Fixed

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

> Disable sharedworkoptimizer remove semijoin by default
> ------------------------------------------------------
>
>                 Key: HIVE-24812
>                 URL: https://issues.apache.org/jira/browse/HIVE-24812
>             Project: Hive
>          Issue Type: Sub-task
>            Reporter: Zoltan Haindrich
>            Assignee: Zoltan Haindrich
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 4.0.0
>
>          Time Spent: 0.5h
>  Remaining Estimate: 0h
>
> SJ removal backfired a bit when I was testing stuff - because of the additional opportunities paralleledges may enable ; because it will increased the shuffled memory amount and/or even make MJ broadcast inputs larger
> set hive.optimize.shared.work.semijoin=false by default for now
> right now it's better to leave dppunion to pick up these cases instead of removing the SJ fully - after HIVE-24376 we might enable it back 



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