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Posted to issues@spark.apache.org by "Apache Spark (Jira)" <ji...@apache.org> on 2021/07/14 09:10:00 UTC
[jira] [Commented] (SPARK-35639) Add metrics about coalesced
partitions to CustomShuffleReader in AQE
[ https://issues.apache.org/jira/browse/SPARK-35639?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17380457#comment-17380457 ]
Apache Spark commented on SPARK-35639:
--------------------------------------
User 'ulysses-you' has created a pull request for this issue:
https://github.com/apache/spark/pull/33342
> Add metrics about coalesced partitions to CustomShuffleReader in AQE
> --------------------------------------------------------------------
>
> Key: SPARK-35639
> URL: https://issues.apache.org/jira/browse/SPARK-35639
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.0.0
> Reporter: Eugene Koifman
> Assignee: Eugene Koifman
> Priority: Major
> Fix For: 3.2.0
>
>
> {{CustomShuffleReaderExec}} reports "number of skewed partitions" and "number of skewed partition splits".
> It would be useful to also report "number of partitions to coalesce" and "number of coalesced partitions" and include this in string rendering of the SparkPlan node so that it looks like this
> {code:java}
> (12) CustomShuffleReader
> Input [2]: [a#23, b#24]
> Arguments: coalesced 3 partitions into 1 and split 2 skewed partitions into 4
> {code}
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