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https://issues.apache.org/jira/browse/YARN-873?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13697513#comment-13697513
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Xuan Gong commented on YARN-873:
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Throwing Exceptions may not be a good option. If we throw an exception out, the
clients may think there is a problem about this command, but actually this
command works fine.
Probably, we can output something like "This appId is not exist. Please use
command yarn application -list to get all application information"
> 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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