[jira] [Commented] (DRILL-6147) Limit batch size for Flat Parquet Reader

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/DRILL-6147?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16491360#comment-16491360 ] 

ASF GitHub Bot commented on DRILL-6147:
---------------------------------------

sachouche opened a new pull request #1294: DRILL-6147: Adding Columnar Parquet Batch Sizing functionality
URL: https://github.com/apache/drill/pull/1294
 
 
   Implemented the Parquet Batching Sizing functionality for the Flat Reader; please find the associated functional and design specification [here](https://docs.google.com/document/d/1A6zFkjxnC_-9RwG4h0sI81KI5ZEvJ7HzgClCUFpB5WE/edit#heading=h.g2id8coli1bb).
   
   @parthchandra, can you please review this PR? 
   
   Thanks!
   

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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
>             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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