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https://issues.apache.org/jira/browse/IMPALA-13451?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Steve Carlin reassigned IMPALA-13451:
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Assignee: Steve Carlin
> Calcite planner does not take advantage of the hash partition of previous
> aggregates
> ------------------------------------------------------------------------------------
>
> Key: IMPALA-13451
> URL: https://issues.apache.org/jira/browse/IMPALA-13451
> Project: IMPALA
> Issue Type: Sub-task
> Components: Frontend
> Affects Versions: Impala 4.5.0
> Reporter: Joe McDonnell
> Assignee: Steve Carlin
> Priority: Major
>
> In [IMPALA-13197|http://issues.apache.org/jira/browse/IMPALA-13197], we added
> support for analytic functions to the Calcite planner. The implementation
> passes empty lists to the second two parameters of AnalyticPlanner. That
> disables a small optimization which can avoid exchanges when the input is
> already hash partitioned in a compatible way:
> [https://github.com/apache/impala/commit/0b3124ab35402f1ab8141e8ffcca28a5a481c81e]
> This is a tracking Jira just so we don't forget about this difference.
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