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Posted to dev@drill.apache.org by "Padma Penumarthy (JIRA)" <ji...@apache.org> on 2018/02/22 19:56:00 UTC

[jira] [Created] (DRILL-6180) Use System Option "output_batch_size" for External Sort

Padma Penumarthy created DRILL-6180:
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             Summary: Use System Option "output_batch_size" for External Sort
                 Key: DRILL-6180
                 URL: https://issues.apache.org/jira/browse/DRILL-6180
             Project: Apache Drill
          Issue Type: Improvement
          Components: Execution - Flow
    Affects Versions: 1.12.0
            Reporter: Padma Penumarthy
            Assignee: Padma Penumarthy
             Fix For: 1.13.0


External Sort has boot time configuration for output batch size "drill.exec.sort.external.spill.merge_batch_size" which is defaulted to 16M.

To make batch sizing configuration uniform across all operators, change this to use new system option that is added "drill.exec.memory.operator.output_batch_size". This option has default value of 32M.

So, what are the implications if default is changed to 32M for external sort ?

Instead, should we change the output batch size default to 16M for all operators ?

 

 



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