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https://issues.apache.org/jira/browse/DRILL-6147?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16528097#comment-16528097
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ASF GitHub Bot commented on DRILL-6147:
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vrozov commented on issue #1330: DRILL-6147: Adding Columnar Parquet Batch
Sizing functionality
URL: https://github.com/apache/drill/pull/1330#issuecomment-401444405
If logging needs to be enabled just for QA purposes, I still don't see why
it needs to be enabled per query or be dynamic and can't be managed by
logging.xml. Additionally, if I understand "QA purpose", batch sizes needs to
be validated by unit testing, not by looking at the logs.
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> Limit batch size for Flat Parquet Reader
> ----------------------------------------
>
> Key: DRILL-6147
> URL: https://issues.apache.org/jira/browse/DRILL-6147
> Project: Apache Drill
> Issue Type: Improvement
> Components: Storage - Parquet
> Reporter: salim achouche
> Assignee: salim achouche
> Priority: Major
> Labels: ready-to-commit
> Fix For: 1.14.0
>
>
> The Parquet reader currently uses a hard-coded batch size limit (32k rows)
> when creating scan batches; there is no parameter nor any logic for
> controlling the amount of memory used. This enhancement will allow Drill to
> take an extra input parameter to control direct memory usage.
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