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https://issues.apache.org/jira/browse/SPARK-22721?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16282566#comment-16282566
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Apache Spark commented on SPARK-22721:
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User 'juliuszsompolski' has created a pull request for this issue:
https://github.com/apache/spark/pull/19923
> BytesToBytesMap peak memory usage not accurate after reset()
> ------------------------------------------------------------
>
> Key: SPARK-22721
> URL: https://issues.apache.org/jira/browse/SPARK-22721
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 2.2.0
> Reporter: Juliusz Sompolski
> Assignee: Juliusz Sompolski
> Fix For: 2.3.0
>
>
> BytesToBytesMap doesn't update peak memory usage before shrinking back to
> initial capacity in reset(), so after a disk spill one never knows what was
> the size of hash table was before spilling.
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