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https://issues.apache.org/jira/browse/DRILL-6123?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16408548#comment-16408548
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Bridget Bevens commented on DRILL-6123:
---------------------------------------
Added content here:
[https://drill.apache.org/docs/configuring-drill-memory/#modifying-memory-allocated-to-queries]
Removed the doc-impacting label. Please add the label back if doc coverage is
not sufficient.
Thanks,
Bridget
> Limit batch size for Merge Join based on memory
> -----------------------------------------------
>
> Key: DRILL-6123
> URL: https://issues.apache.org/jira/browse/DRILL-6123
> Project: Apache Drill
> Issue Type: Improvement
> Components: Execution - Flow
> Affects Versions: 1.12.0
> Reporter: Padma Penumarthy
> Assignee: Padma Penumarthy
> Priority: Major
> Labels: ready-to-commit
> Fix For: 1.13.0
>
>
> Merge join limits output batch size to 32K rows irrespective of row size.
> This can create very large or very small batches (in terms of memory),
> depending upon average row width. Change this to figure out output row count
> based on memory specified with the new outputBatchSize option and average row
> width of incoming left and right batches. Output row count will be minimum of
> 1 and max of 64k.
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