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https://issues.apache.org/jira/browse/YARN-5280?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15866716#comment-15866716
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Greg Phillips commented on YARN-5280:
-------------------------------------
[~rkanter] - From your previous note it became clear simply limiting the
container to execute something called 'java' is inherently insecure. This
patch ensures the java executable used to run the NodeManager is also used for
the container. If a different version of Java or even a shell script named
'java' is provided an exception will be thrown in enforcing mode, or a warning
will be logged in permissive mode.
> Allow YARN containers to run with Java Security Manager
> -------------------------------------------------------
>
> Key: YARN-5280
> URL: https://issues.apache.org/jira/browse/YARN-5280
> Project: Hadoop YARN
> Issue Type: New Feature
> Components: nodemanager, yarn
> Affects Versions: 2.6.4
> Reporter: Greg Phillips
> Assignee: Greg Phillips
> Priority: Minor
> Labels: oct16-medium
> Attachments: YARN-5280.001.patch, YARN-5280.002.patch,
> YARN-5280.003.patch, YARN-5280.004.patch, YARN-5280.005.patch,
> YARN-5280.006.patch, YARN-5280.007.patch, YARN-5280.008.patch,
> YARN-5280.patch, YARNContainerSandbox.pdf
>
>
> YARN applications have the ability to perform privileged actions which have
> the potential to add instability into the cluster. The Java Security Manager
> can be used to prevent users from running privileged actions while still
> allowing their core data processing use cases.
> Introduce a YARN flag which will allow a Hadoop administrator to enable the
> Java Security Manager for user code, while still providing complete
> permissions to core Hadoop libraries.
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