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https://issues.apache.org/jira/browse/SPARK-8850?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14648729#comment-14648729
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Reynold Xin commented on SPARK-8850:
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Can you do a lsof to see what's open? The possible causes are:
1. We now allocate less memory for sorting.
2. Maybe we are not closing files proactively enough.
> Turn unsafe mode on by default
> ------------------------------
>
> Key: SPARK-8850
> URL: https://issues.apache.org/jira/browse/SPARK-8850
> Project: Spark
> Issue Type: Task
> Components: SQL
> Reporter: Reynold Xin
> Assignee: Josh Rosen
> Fix For: 1.5.0
>
>
> Let's turn unsafe on and see what bugs we find in preparation for 1.5.
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