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