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https://issues.apache.org/jira/browse/ARROW-11056?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17332332#comment-17332332
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Andrew Lamb commented on ARROW-11056:
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Migrated to github: https://github.com/apache/arrow-datafusion/issues/137
> [Rust] [DataFusion] Allow ParquetExec to parallelize work based on row groups
> -----------------------------------------------------------------------------
>
> Key: ARROW-11056
> URL: https://issues.apache.org/jira/browse/ARROW-11056
> Project: Apache Arrow
> Issue Type: Improvement
> Components: Rust - DataFusion
> Reporter: Andy Grove
> Priority: Major
>
> ParquetExec currently parallelizes work by passinging individual files to
> threads. It would be nice to be able to do this in a finer-grained way by
> assigning row groups and/or column chunks instead. This will be especially
> important in distributed systems built on DataFusion.
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