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https://issues.apache.org/jira/browse/IMPALA-12703?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Riza Suminto resolved IMPALA-12703.
-----------------------------------
Fix Version/s: Impala 4.4.0
Resolution: Fixed
patch has merged.
> ExchangeNode should use getFilteredCardinality for costing.
> -----------------------------------------------------------
>
> Key: IMPALA-12703
> URL: https://issues.apache.org/jira/browse/IMPALA-12703
> Project: IMPALA
> Issue Type: Bug
> Components: Frontend
> Reporter: Riza Suminto
> Assignee: Riza Suminto
> Priority: Major
> Fix For: Impala 4.4.0
>
>
> IMPALA-12018 changed the CPU costing formula from using getCardinality() to
> getFilteredCardinality() for DataStreamSink, HashJoinNode, JoinNode, and
> NestedLoopJoinNode. However, it miss to do the same for ExchangeNode, which
> is also eligible for cardinality reduction by runtime filter.
> [https://github.com/apache/impala/blob/cdac777c51febc99500b8426c2b3aabc7e9addd7/fe/src/main/java/org/apache/impala/planner/ExchangeNode.java#L236-L237]
>
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