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https://issues.apache.org/jira/browse/DRILL-5665?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Boaz Ben-Zvi updated DRILL-5665:
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Reviewer: Paul Rogers
> planner.force_2phase.aggr Set to TRUE for HashAgg may cause wrong results for
> VARIANCE and STD_DEV
> --------------------------------------------------------------------------------------------------
>
> Key: DRILL-5665
> URL: https://issues.apache.org/jira/browse/DRILL-5665
> Project: Apache Drill
> Issue Type: Bug
> Components: Execution - Relational Operators
> Affects Versions: 1.11.0
> Reporter: Boaz Ben-Zvi
> Assignee: Boaz Ben-Zvi
> Fix For: 1.11.0
>
>
> *planner.force_2phase.aggr* was added for testing the hash 2-phase spill to
> disk aggregation implementation. However, if it is set to true, stream
> aggregate will run in two phase too and return wrong results for some
> functions such as variance() and std_dev().
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