[
https://issues.apache.org/jira/browse/SPARK-3613?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14141870#comment-14141870
]
Apache Spark commented on SPARK-3613:
-------------------------------------
User 'rxin' has created a pull request for this issue:
https://github.com/apache/spark/pull/2470
> Don't record the size of each shuffle block for large jobs
> ----------------------------------------------------------
>
> Key: SPARK-3613
> URL: https://issues.apache.org/jira/browse/SPARK-3613
> Project: Spark
> Issue Type: Improvement
> Components: Shuffle, Spark Core
> Reporter: Reynold Xin
> Assignee: Reynold Xin
>
> MapStatus saves the size of each block (1 byte per block) for a particular
> map task. This actually means the shuffle metadata is O(M*R), where M = num
> maps and R = num reduces.
> If M is greater than a certain size, we should probably just send an average
> size instead of a whole array.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org
For additional commands, e-mail: issues-h...@spark.apache.org
