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Posted to dev@drill.apache.org by "Boaz Ben-Zvi (JIRA)" <ji...@apache.org> on 2017/07/08 02:15:00 UTC

[jira] [Created] (DRILL-5665) planner.force_2phase.aggr Set to TRUE for HashAgg may cause wrong results for VARIANCE and STD_DEV

Boaz Ben-Zvi created DRILL-5665:
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             Summary: 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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