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Posted to issues@spark.apache.org by "Apache Spark (Jira)" <ji...@apache.org> on 2021/12/23 10:09:00 UTC

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

    [ https://issues.apache.org/jira/browse/SPARK-37726?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17464411#comment-17464411 ] 

Apache Spark commented on SPARK-37726:
--------------------------------------

User 'c21' has created a pull request for this issue:
https://github.com/apache/spark/pull/34999

> 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
>            Priority: Trivial
>
> 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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