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https://issues.apache.org/jira/browse/HIVE-23991?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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mahesh kumar behera reassigned HIVE-23991:
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> Support isAlwaysTrue for Anti Join
> ----------------------------------
>
> Key: HIVE-23991
> URL: https://issues.apache.org/jira/browse/HIVE-23991
> Project: Hive
> Issue Type: Bug
> Reporter: mahesh kumar behera
> Assignee: mahesh kumar behera
> Priority: Major
>
> The current anti join conversion does not support direct conversion of
> not-exists to anti join. The not exists sub query is converted first to left
> out join and then its converted to anti join. This may cause some of the
> optimization rule to be skipped.
>
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