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https://issues.apache.org/jira/browse/YARN-1321?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alejandro Abdelnur updated YARN-1321:
-------------------------------------
Attachment: YARN-1321.patch
Sandy, Omkar, thanks for reviewing the patch. I've normalized the instance
method names not to use "NM" in their names. On the testcases, I've modified
the tests cases to assert an instance different from the singleton is used when
set.
> NMTokenCache is a a singleton, prevents multiple AMs running in a single JVM
> to work correctly
> ----------------------------------------------------------------------------------------------
>
> Key: YARN-1321
> URL: https://issues.apache.org/jira/browse/YARN-1321
> Project: Hadoop YARN
> Issue Type: Bug
> Components: client
> Affects Versions: 2.2.0
> Reporter: Alejandro Abdelnur
> Assignee: Alejandro Abdelnur
> Priority: Blocker
> Fix For: 2.2.1
>
> Attachments: YARN-1321.patch, YARN-1321.patch, YARN-1321.patch,
> YARN-1321.patch
>
>
> NMTokenCache is a singleton. Because of this, if running multiple AMs in a
> single JVM NMTokens for the same node from different AMs step on each other
> and starting containers fail due to mismatch tokens.
> The error observed in the client side is something like:
> {code}
> ERROR org.apache.hadoop.security.UserGroupInformation:
> PriviledgedActionException as:llama (auth:PROXY) via llama (auth:SIMPLE)
> cause:org.apache.hadoop.yarn.exceptions.YarnException: Unauthorized request
> to start container.
> NMToken for application attempt : appattempt_1382038445650_0002_000001 was
> used for starting container with container token issued for application
> attempt : appattempt_1382038445650_0001_000001
> {code}
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