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https://issues.apache.org/jira/browse/YARN-7815?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16344082#comment-16344082
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Miklos Szegedi commented on YARN-7815:
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Thank you, for the replies [~jlowe] and [~eyang]. I understand now that
container level isolation is not possible.
I have one last question. Should not we remove this comment and code in this
case?
[https://github.com/apache/hadoop/blob/7fd287b4af5a191f18ea92850b7d904e4b4fb693/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-applications-distributedshell/src/main/java/org/apache/hadoop/yarn/applications/distributedshell/ApplicationMaster.java#L670]
Based on what you said, removing the AM token is misleading, since a neighbor
container can grab it anyways by design.
> 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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