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Posted to issues@spark.apache.org by "Cheng Su (Jira)" <ji...@apache.org> on 2021/12/23 09:58:00 UTC

[jira] [Created] (SPARK-37726) Add spill size metrics for sort merge join

Cheng Su created SPARK-37726:
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             Summary: Add spill size metrics for sort merge join
                 Key: SPARK-37726
                 URL: https://issues.apache.org/jira/browse/SPARK-37726
             Project: Spark
          Issue Type: Improvement
          Components: SQL
    Affects Versions: 3.3.0
            Reporter: Cheng Su


Sort merge join allows buffered side to spill if the size is too large to hold in memory. It would be good to add a "spill size" SQL metrics in sort merge join, to track how often the spill happens, and how much of spill size would be in case when it spills.



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