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Posted to dev@drill.apache.org by "MinJi Kim (JIRA)" <ji...@apache.org> on 2016/02/19 20:12:18 UTC

[jira] [Created] (DRILL-4415) Minimum parallelization width not respected in group scans

MinJi Kim created DRILL-4415:
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             Summary: Minimum parallelization width not respected in group scans
                 Key: DRILL-4415
                 URL: https://issues.apache.org/jira/browse/DRILL-4415
             Project: Apache Drill
          Issue Type: Bug
          Components:  Server
            Reporter: MinJi Kim


Even if the minimum parallelization widith is set to > 1 value, this value is not always respected.

For example, in AggPruleBase, the decision to do two phase aggregation (create2PhasePlan) only takes into account the number of rows.  So, if table is small enough, even if the width is set to > 1 value, the plan will ignore the minimum width request. 



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