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https://issues.apache.org/jira/browse/DRILL-6180?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16373948#comment-16373948
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ASF GitHub Bot commented on DRILL-6180:
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GitHub user ppadma opened a pull request:
https://github.com/apache/drill/pull/1129
DRILL-6180: Use System Option "output_batch_size" for External Sort
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. Changed it to 16M.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/ppadma/drill DRILL-6180
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/drill/pull/1129.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #1129
----
commit 5121663c1fac618d0374667c97c20570197b7455
Author: Padma Penumarthy <ppenumar97@...>
Date: 2018-02-23T00:41:47Z
DRILL-6180: Use System Option "output_batch_size" for External Sort
----
> 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
> 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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