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https://issues.apache.org/jira/browse/YARN-5352?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15435125#comment-15435125
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Nathan Roberts commented on YARN-5352:
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bq. I think minimally this needs to be an optional feature (either at the
cluster level or at the per-job level) that defaults to false.
I agree. I'm thinking that a cluster-level config with default=off, and then
the best way to handle container-level support would be via the ongoing work to
support docker containers.
> Allow container-executor to use private /tmp
> ---------------------------------------------
>
> Key: YARN-5352
> URL: https://issues.apache.org/jira/browse/YARN-5352
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: nodemanager
> Reporter: Nathan Roberts
> Assignee: Nathan Roberts
> Attachments: YARN-5352-v0.patch
>
>
> It's very common for user code to create things in /tmp. Yes, applications
> have means to specify alternate tmp directories but doing so is opt-in and
> therefore doesn't happen in many case. At a minimum, linux can use private
> namespaces to create a private /tmp for each container so that it's using the
> same space allocated to containers and it's automatically cleaned up as part
> of container clean-up.
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