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https://issues.apache.org/jira/browse/DRILL-6180?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16380682#comment-16380682
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ASF GitHub Bot commented on DRILL-6180:
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Github user paul-rogers commented on a diff in the pull request:
https://github.com/apache/drill/pull/1129#discussion_r171315310
--- Diff: exec/java-exec/src/main/resources/drill-module.conf ---
@@ -421,7 +416,7 @@ drill.exec.options: {
drill.exec.storage.implicit.fqn.column.label: "fqn",
drill.exec.storage.implicit.suffix.column.label: "suffix",
drill.exec.testing.controls: "{}",
- drill.exec.memory.operator.output_batch_size : 33554432, # 32 MB
+ drill.exec.memory.operator.output_batch_size : 16777216, # 16 MB
--- End diff --
Thanks for making this adjustment.
> 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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