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Posted to issues@spark.apache.org by "Chao Sun (Jira)" <ji...@apache.org> on 2020/08/20 23:17:00 UTC

[jira] [Created] (SPARK-32674) Add suggestion for parallel directory listing in tuning doc

Chao Sun created SPARK-32674:
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             Summary: 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


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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