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https://issues.apache.org/jira/browse/YARN-1554?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Steve Loughran resolved YARN-1554.
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Resolution: Duplicate
> add an env variable for the YARN AM classpath
> ---------------------------------------------
>
> Key: YARN-1554
> URL: https://issues.apache.org/jira/browse/YARN-1554
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: nodemanager
> Affects Versions: 2.2.0
> Reporter: Steve Loughran
> Priority: Minor
>
> Currently YARN apps set up their classpath via the default value
> {{YarnConfiguration.DEFAULT_YARN_APPLICATION_CLASSPATH}} or an overridden
> property {{yarn.application.classpath}}.
> If you don't have the classpath right, the AM won't start up. This means the
> client needs to be explicitly configured with the CP.
> If the node manager exported the classpath property via an env variable
> {{YARN_APPLICATION_CLASSPATH}}, then the classpath could be set up in the AM
> simply by referencing that property, rather than hoping its setting is in
> sync.
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