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https://issues.apache.org/jira/browse/ARROW-12760?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Antoine Pitrou updated ARROW-12760:
-----------------------------------
Summary: [C++][Python] S3FileSystem: IO thread parallelism limited to 8
threads (was: [Python] S3FileSystem: IO thread parallelism limited to 8
threads)
> [C++][Python] S3FileSystem: IO thread parallelism limited to 8 threads
> ----------------------------------------------------------------------
>
> Key: ARROW-12760
> URL: https://issues.apache.org/jira/browse/ARROW-12760
> Project: Apache Arrow
> Issue Type: Improvement
> Affects Versions: 4.0.0
> Reporter: Juan Galvez
> Priority: Major
> Labels: filesystem, performance
>
> On Arrow 4, I'm not able to get more than 8 thread parallelism (for example
> when N threads call fs.ls() with different paths) for S3FileSystem created
> with pyarrow, because the default IO context is created with 8 thread limit
> (hardcoded), and I don't see a way to change this or pass a custom IO context
> through pyarrow APIs. I believe this affects other Arrow filesystem
> implementations as well.
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