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https://issues.apache.org/jira/browse/SPARK-11843?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15014994#comment-15014994
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Andrew Or commented on SPARK-11843:
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Oops, that seems to be the case. I'm closing this.
> Isolate staging directory across applications on same YARN cluster
> ------------------------------------------------------------------
>
> Key: SPARK-11843
> URL: https://issues.apache.org/jira/browse/SPARK-11843
> Project: Spark
> Issue Type: Bug
> Components: YARN
> Reporter: Andrew Or
> Priority: Minor
>
> If multiple clients share the same YARN cluster and file system they may end
> up using the same `.sparkStaging` directory. This may be a problem if their
> jars are called something similar, for instance. It would be easier to
> enforce isolation for both security and user experience if the staging
> directories are isolated. We can either:
> (1) allow users to configure the directory name
> (2) add an identifier to the directory name, which I prefer
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