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Posted to issues@drill.apache.org by "Padma Penumarthy (JIRA)" <ji...@apache.org> on 2018/04/03 22:00:00 UTC

[jira] [Created] (DRILL-6307) Handle empty batches in record batch sizer correctly

Padma Penumarthy created DRILL-6307:
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             Summary: Handle empty batches in record batch sizer correctly
                 Key: DRILL-6307
                 URL: https://issues.apache.org/jira/browse/DRILL-6307
             Project: Apache Drill
          Issue Type: Bug
          Components: Execution - Flow
    Affects Versions: 1.13.0
            Reporter: Padma Penumarthy
            Assignee: Padma Penumarthy
             Fix For: 1.14.0


when we get empty batch, record batch sizer calculates row width as zero. In that case, we do not do accounting and memory allocation correctly for outgoing batches. 

For example, in merge join, for outer left join, if right side batch is empty, we still have to include the right side columns as null in outgoing batch. We have to allocate memory for those vectors correctly. We also have to include row width of those columns in the outgoing row width and number of rows calculation. 



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