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https://issues.apache.org/jira/browse/HIVE-24312?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Zoltan Haindrich reassigned HIVE-24312:
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> Use column stats to remove "x is not null" filter conditions if they are
> redundant
> ----------------------------------------------------------------------------------
>
> Key: HIVE-24312
> URL: https://issues.apache.org/jira/browse/HIVE-24312
> Project: Hive
> Issue Type: Improvement
> Reporter: Zoltan Haindrich
> Assignee: Zoltan Haindrich
> Priority: Major
>
> with HIVE-24241 SharedWorkOptimizer could further merge branches for some
> queries (ex:
> [query32|https://github.com/apache/hive/blob/db895f374bf63b77b683574fdf678bfac91a5ac6/ql/src/test/results/clientpositive/perf/tez/query32.q.out#L118-L163]
> )
> ...but a little `is not null` difference prevents it from proceeding.
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