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https://issues.apache.org/jira/browse/YARN-873?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13700382#comment-13700382
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Bikas Saha commented on YARN-873:
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There is probably no concept of an error code in the ApplicationReport object.
The only current way for the YarnClient method to show an error is via an
exception or a null report. Null report can be unclear as to what happened.
> YARNClient.getApplicationReport(unknownAppId) returns a null report
> -------------------------------------------------------------------
>
> Key: YARN-873
> URL: https://issues.apache.org/jira/browse/YARN-873
> Project: Hadoop YARN
> Issue Type: Sub-task
> Affects Versions: 2.1.0-beta
> Reporter: Bikas Saha
> Assignee: Xuan Gong
>
> How can the client find out that app does not exist?
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