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https://issues.apache.org/jira/browse/HIVE-30145?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Denys Kuzmenko updated HIVE-30145:
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Labels: performance pull-request-available (was: pull-request-available)
> SharedWorkOptimizer: decompose a discarded scan after its semijoin filters
> are replaced
> ---------------------------------------------------------------------------------------
>
> Key: HIVE-30145
> URL: https://issues.apache.org/jira/browse/HIVE-30145
> Project: Hive
> Issue Type: Bug
> Components: Logical Optimizer
> Reporter: Denys Kuzmenko
> Assignee: Denys Kuzmenko
> Priority: Major
> Labels: performance, pull-request-available
> Fix For: 4.3.0
>
>
> In SharedWorkOptimizer, when two scans are merged by SubtreeMerge or
> RemoveSemijoin, the discarded scan is now decomposed (DecomposedTs modelD)
> after replaceSemijoinExpressions(discardableTsOp, ...), not before it.
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