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https://issues.apache.org/jira/browse/HIVE-1538?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12906428#action_12906428
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Amareshwari Sriramadasu commented on HIVE-1538:
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With predicate pushdown on, the final candidates for predicate pushdown are
collected for the top operator.
And a FilterOperator is created, with the final candidates, as a child of
TableScanOperator (topOp). But the operators (FilterOperators) whose predicates
are pushed down, are not removed.
I think the solution is to collect the operators who are contributing the
predicates for "final candidates of predicare pushdown" and remove them from
the final operator graph.
Thoughts?
> FilterOperator is applied twice with ppd on.
> --------------------------------------------
>
> Key: HIVE-1538
> URL: https://issues.apache.org/jira/browse/HIVE-1538
> Project: Hadoop Hive
> Issue Type: Bug
> Components: Query Processor
> Reporter: Amareshwari Sriramadasu
> Assignee: Amareshwari Sriramadasu
>
> With hive.optimize.ppd set to true, FilterOperator is applied twice. And it
> seems second operator is always filtering zero rows.
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