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https://issues.apache.org/jira/browse/SPARK-9364?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14642098#comment-14642098
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Apache Spark commented on SPARK-9364:
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User 'JoshRosen' has created a pull request for this issue:
https://github.com/apache/spark/pull/7680
> Properly update `freeSpaceInCurrentPage` in UnsafeExternalSorter
> ----------------------------------------------------------------
>
> Key: SPARK-9364
> URL: https://issues.apache.org/jira/browse/SPARK-9364
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 1.5.0
> Reporter: Josh Rosen
> Assignee: Josh Rosen
>
> UnsafeExternalSorter does not properly update {{freeSpaceInCurrentPage}},
> which can cause it to write past the end of memory pages and trigger
> segfaults.
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