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https://issues.apache.org/jira/browse/YARN-7815?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16344071#comment-16344071
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Eric Yang commented on YARN-7815:
---------------------------------
[[email protected]] It will be hard to enforce read-only to other
container directories because they might be spawned much later than current
container launch. I like [~jlowe]'s proposal to keep the read/write access to
targeted app. Can we break anything if we move localized user-private files
from nm-local-dir/usercache/_user to nm-local-dir/usercache/__user__/filecache_
during upgrade?
> Mount the filecache as read-only in Docker containers
> -----------------------------------------------------
>
> Key: YARN-7815
> URL: https://issues.apache.org/jira/browse/YARN-7815
> Project: Hadoop YARN
> Issue Type: Sub-task
> Reporter: Shane Kumpf
> Assignee: Shane Kumpf
> Priority: Major
>
> Currently, when using the Docker runtime, the filecache directories are
> mounted read-write into the Docker containers. Read write access is not
> necessary. We should make this more restrictive by changing that mount to
> read-only.
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