Steve Loughran created YARN-1554:
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Summary: 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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