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From "Varun Saxena (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (YARN-6375) App level aggregation should not consider metric values reported in the previous aggregation cycle
Date Thu, 27 Apr 2017 09:56:04 GMT

    [ https://issues.apache.org/jira/browse/YARN-6375?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15986299#comment-15986299
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Varun Saxena edited comment on YARN-6375 at 4/27/17 9:55 AM:
-------------------------------------------------------------

Ping [~vrushalic].
Is the current fix fine with you?


was (Author: varun_saxena):
Ping [~vrushalic].
Is the current approach fix fine with you?

> App level aggregation should not consider metric values reported in the previous aggregation
cycle
> --------------------------------------------------------------------------------------------------
>
>                 Key: YARN-6375
>                 URL: https://issues.apache.org/jira/browse/YARN-6375
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: timelineserver
>            Reporter: Varun Saxena
>            Assignee: Varun Saxena
>         Attachments: YARN-6375-YARN-5355.01.patch
>
>
> Currently app level aggregation is done every 15 seconds.
> And we consider last reported metric value for each entity belonging to an app for aggregation.
> We however merely update the corresponding metric values for the entity on put. We never
remove the entries.
> But it is possible that multiple entities finish during lifetime of an application. We
however continue to consider them till the end.
> We should however not consider metric values of entities unless reported within the 15
second period.
> Consider containers. For a long running app, several containers would start and end at
various times during the lifetime of an app.
> To consider metrics for all the containers throughout the lifetime of app, hence wont
be correct.



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