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Posted to yarn-issues@hadoop.apache.org by "Alejandro Abdelnur (JIRA)" <ji...@apache.org> on 2013/10/19 05:12:43 UTC
[jira] [Updated] (YARN-1321) NMTokenCache is a a singleton,
prevents multiple AMs running in a single JVM to work correctly.
[ https://issues.apache.org/jira/browse/YARN-1321?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Alejandro Abdelnur updated YARN-1321:
-------------------------------------
Summary: NMTokenCache is a a singleton, prevents multiple AMs running in a single JVM to work correctly. (was: NMTokenCache should not be a singleton)
> 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
>
>
> 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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