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From "Jian He (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-3480) Make AM max attempts stored in RMAppImpl and RMStateStore to be configurable
Date Thu, 07 May 2015 21:13:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-3480?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14533389#comment-14533389
] 

Jian He commented on YARN-3480:
-------------------------------

[~hex108], thanks for your explanations.
I can see this will be a problem for long running apps, as the number of attempts will just
keep increasing.
To be consistent with the attemptFailureValidityWindow for long running apps, instead of introducing
a global hard limit, How about removing the attempt records that's beyond the validity window
?

> Make AM max attempts stored in RMAppImpl and RMStateStore to be configurable
> ----------------------------------------------------------------------------
>
>                 Key: YARN-3480
>                 URL: https://issues.apache.org/jira/browse/YARN-3480
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: resourcemanager
>    Affects Versions: 2.6.0
>            Reporter: Jun Gong
>            Assignee: Jun Gong
>         Attachments: YARN-3480.01.patch, YARN-3480.02.patch, YARN-3480.03.patch
>
>
> When RM HA is enabled and running containers are kept across attempts, apps are more
likely to finish successfully with more retries(attempts), so it will be better to set 'yarn.resourcemanager.am.max-attempts'
larger. However it will make RMStateStore(FileSystem/HDFS/ZK) store more attempts, and make
RM recover process much slower. It might be better to set max attempts to be stored in RMStateStore.
> BTW: When 'attemptFailuresValidityInterval'(introduced in YARN-611) is set to a small
value, retried attempts might be very large. So we need to delete some attempts stored in
RMStateStore and RMStateStore.



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