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https://issues.apache.org/jira/browse/HIVE-7814?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14112611#comment-14112611
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Laljo John Pullokkaran commented on HIVE-7814:
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Enhancements:
1. PPD to keep pushing predicates as long as possible
2. Push Predicate through Project/Select, Union All
3. Merge Filters
4. Remove trivial Project/Select operator
5. Simplify Join (outer to inner)
> CBO: Predicate Push Down Enhancements
> -------------------------------------
>
> Key: HIVE-7814
> URL: https://issues.apache.org/jira/browse/HIVE-7814
> Project: Hive
> Issue Type: Sub-task
> Reporter: Laljo John Pullokkaran
> Assignee: Laljo John Pullokkaran
>
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