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https://issues.apache.org/jira/browse/YARN-4392?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15036530#comment-15036530
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Naganarasimha G R commented on YARN-4392:
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[~xgong],
Yes you are right, it would not be good to depend on ATS that it will send
certain events synchronously.
but IIUC there is no limit on number of running apps in state store and
finished apps are restricted to a configurable number. In such cases would not
there be many created events in a larger cluster on recovery? my 2 cents would
be atleast to avoid for app created event but if its not a great deal, then
fine with the current fix. :)
Thanks for assigning it to me, i can get the test case failure corrected as it
was already handled in YARN-3127.
> ApplicationCreatedEvent event time resets after RM restart/failover
> -------------------------------------------------------------------
>
> Key: YARN-4392
> URL: https://issues.apache.org/jira/browse/YARN-4392
> Project: Hadoop YARN
> Issue Type: Bug
> Affects Versions: 2.8.0
> Reporter: Xuan Gong
> Assignee: Naganarasimha G R
> Priority: Critical
> Attachments: YARN-4392-2015-11-24.patch, YARN-4392.1.patch,
> YARN-4392.2.patch
>
>
> {code}2015-09-01 12:39:09,852 WARN util.Times (Times.java:elapsed(53)) -
> Finished time 1437453994768 is ahead of started time 1440308399674
> 2015-09-01 12:39:09,852 WARN util.Times (Times.java:elapsed(53)) - Finished
> time 1437454008244 is ahead of started time 1440308399676
> 2015-09-01 12:39:09,852 WARN util.Times (Times.java:elapsed(53)) - Finished
> time 1437444305171 is ahead of started time 1440308399653
> 2015-09-01 12:39:09,852 WARN util.Times (Times.java:elapsed(53)) - Finished
> time 1437444293115 is ahead of started time 1440308399647
> 2015-09-01 12:39:09,852 WARN util.Times (Times.java:elapsed(53)) - Finished
> time 1437444379645 is ahead of started time 1440308399656
> 2015-09-01 12:39:09,852 WARN util.Times (Times.java:elapsed(53)) - Finished
> time 1437444361234 is ahead of started time 1440308399655
> 2015-09-01 12:39:09,852 WARN util.Times (Times.java:elapsed(53)) - Finished
> time 1437444342029 is ahead of started time 1440308399654
> 2015-09-01 12:39:09,852 WARN util.Times (Times.java:elapsed(53)) - Finished
> time 1437444323447 is ahead of started time 1440308399654
> 2015-09-01 12:39:09,853 WARN util.Times (Times.java:elapsed(53)) - Finished
> time 1437444430006 is ahead of started time 1440308399660
> 2015-09-01 12:39:09,853 WARN util.Times (Times.java:elapsed(53)) - Finished
> time 1437444415698 is ahead of started time 1440308399659
> 2015-09-01 12:39:09,853 WARN util.Times (Times.java:elapsed(53)) - Finished
> time 1437444419060 is ahead of started time 1440308399658
> 2015-09-01 12:39:09,853 WARN util.Times (Times.java:elapsed(53)) - Finished
> time 1437444393931 is ahead of started time 1440308399657
> {code} .
> From ATS logs, we would see a large amount of 'stale alerts' messages
> periodically
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