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https://issues.apache.org/jira/browse/SPARK-32674?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17181493#comment-17181493
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Apache Spark commented on SPARK-32674:
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User 'sunchao' has created a pull request for this issue:
https://github.com/apache/spark/pull/29498
> Add suggestion for parallel directory listing in tuning doc
> -----------------------------------------------------------
>
> Key: SPARK-32674
> URL: https://issues.apache.org/jira/browse/SPARK-32674
> Project: Spark
> Issue Type: Documentation
> Components: Documentation
> Affects Versions: 3.0.0
> Reporter: Chao Sun
> Priority: Minor
>
> Sometimes directory listing could become a bottleneck when user jobs have
> large number of input directories. This is especially true when against
> object store like S3.
> There are a few parameters to tune this. This proposes to add some info in
> the tuning guide so that the knowledge can be better shared.
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