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https://issues.apache.org/jira/browse/YARN-6208?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15903443#comment-15903443
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Daniel Templeton commented on YARN-6208:
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It's not like the log message is going to appear so often that we need to worry
about optimizing for length. I much prefer having a log message that can be
understood without looking at source code.
> Improve the log when FinishAppEvent sent to the NodeManager which didn't run
> the application
> --------------------------------------------------------------------------------------------
>
> Key: YARN-6208
> URL: https://issues.apache.org/jira/browse/YARN-6208
> Project: Hadoop YARN
> Issue Type: Improvement
> Reporter: Akira Ajisaka
> Assignee: Akira Ajisaka
> Priority: Minor
> Labels: newbie, supportability
> Attachments: YARN-6208.01.patch
>
>
> When FinishAppEvent of an application is sent to a NodeManager and there are
> no applications of the application ran on the NodeManager, we can see the
> following log:
> {code}
> 2015-12-28 11:59:18,725 WARN
> org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl:
> Event EventType: FINISH_APPLICATION sent to absent application
> application_1446103803043_9892
> {code}
> YARN-4520 made the log as follows:
> {code}
> LOG.warn("couldn't find application " + appID + " while processing"
> + " FINISH_APPS event");
> {code}
> and I'm thinking it can be improved.
> * Make the log WARN from INFO
> * Add why the NodeManager couldn't find the application. For example,
> "because there were no containers of the application ran on the NodeManager."
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