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From "Padma Penumarthy (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (DRILL-6180) Use System Option "output_batch_size" for External Sort
Date Wed, 28 Feb 2018 23:57:00 GMT

     [ https://issues.apache.org/jira/browse/DRILL-6180?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Padma Penumarthy updated DRILL-6180:
------------------------------------
      Labels: ready-to-commit  (was: )
    Reviewer: Paul Rogers

> 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
>            Priority: Critical
>              Labels: ready-to-commit
>             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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