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Posted to issues@spark.apache.org by "XiDuo You (Jira)" <ji...@apache.org> on 2021/12/06 11:52:00 UTC

[jira] [Created] (SPARK-37559) ShuffledRowRDD get preferred locations order by reduce size

XiDuo You created SPARK-37559:
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             Summary: ShuffledRowRDD get preferred locations order by reduce size
                 Key: SPARK-37559
                 URL: https://issues.apache.org/jira/browse/SPARK-37559
             Project: Spark
          Issue Type: Improvement
          Components: SQL
    Affects Versions: 3.3.0
            Reporter: XiDuo You


The coalesced partition can contain several reduce partitions. The preferred locations of the RDD partition should be the biggest reduce partition before coalesced. So it can get a better data locality and reduce the network traffic.



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