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https://issues.apache.org/jira/browse/YARN-1859?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13942655#comment-13942655
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Vinod Kumar Vavilapalli commented on YARN-1859:
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Looks good, +1. Checking this in.
> WebAppProxyServlet will throw ApplicationNotFoundException if the app is no
> longer cached in RM
> -----------------------------------------------------------------------------------------------
>
> Key: YARN-1859
> URL: https://issues.apache.org/jira/browse/YARN-1859
> Project: Hadoop YARN
> Issue Type: Bug
> Reporter: Zhijie Shen
> Assignee: Zhijie Shen
> Attachments: YARN-1859.1.patch
>
>
> WebAppProxyServlet checks null to determine whether the application is not
> found or not.
> {code}
> ApplicationReport applicationReport = getApplicationReport(id);
> if(applicationReport == null) {
> LOG.warn(req.getRemoteUser()+" Attempting to access "+id+
> " that was not found");
> {code}
> However, WebAppProxyServlet calls AppReportFetcher, which consequently calls
> ClientRMService. When application is not found, ClientRMService throws
> ApplicationNotFoundException. Therefore, in WebAppProxyServlet, the following
> logic to create the tracking url for a non-cached app will no longer be in
> use.
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