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Allow ParquetExec to parallelize work based on row groups #137

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alamb opened this issue Apr 26, 2021 · 0 comments · Fixed by #5057
Closed

Allow ParquetExec to parallelize work based on row groups #137

alamb opened this issue Apr 26, 2021 · 0 comments · Fixed by #5057
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datafusion Changes in the datafusion crate enhancement New feature or request help wanted Extra attention is needed

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@alamb
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alamb commented Apr 26, 2021

Note: migrated from original JIRA: https://issues.apache.org/jira/browse/ARROW-11056

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.
@alamb alamb added the datafusion Changes in the datafusion crate label Apr 26, 2021
@houqp houqp added enhancement New feature or request help wanted Extra attention is needed labels Oct 18, 2021
@korowa korowa mentioned this issue Jan 25, 2023
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datafusion Changes in the datafusion crate enhancement New feature or request help wanted Extra attention is needed
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Parquet parallel scan korowa/arrow-datafusion
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