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From "Rohith Sharma K S (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-6825) RM quit due to ApplicationStateData exceed the limit size of znode in zk
Date Fri, 14 Jul 2017 10:57:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-6825?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16087177#comment-16087177

Rohith Sharma K S commented on YARN-6825:

I think 80% of  configured jute buffer should be taken implicitly rather than allowing admin
to configure 80% of jute buffer. This gives a buffered space for allowing additional information
into ApplicationStateData. 

And also diagnosis error message length i.e 64Kb should be private configurations. Otherwise,
this issue will be there forever if there is any misconfigured length of diagnosis errors.

> RM quit due to ApplicationStateData exceed the limit size of znode in zk
> ------------------------------------------------------------------------
>                 Key: YARN-6825
>                 URL: https://issues.apache.org/jira/browse/YARN-6825
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: resourcemanager
>            Reporter: Rohith Sharma K S
> YARN-5006 fixes this issue by strict validation for ApplicationStateData length against
1MB(default max jute buffer) during application submission only. There is possibility of thrashing
as dead zone was not properly defined/taken care.
> But it do not consider scenarios where ApplicationStateData can be increased later point
of time i.e 
> # If app is submitted with less than 1MB during submission, later updated like queue
name or life time value or priority is changed. The app update call will be sent to statestore
which cause same issue because ApplicationStateData length has increased.
> # Consider there is no app update, but final state are stored in ZK. This adds up several
fields such finishTime, finalState, finalApplicationState. This increases size of ApplicationStateData.

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