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From "Karthik Kambatla (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-1878) Yarn standby RM taking long to transition to active
Date Wed, 26 Mar 2014 07:07:23 GMT

    [ https://issues.apache.org/jira/browse/YARN-1878?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13947615#comment-13947615
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Karthik Kambatla commented on YARN-1878:
----------------------------------------

Please note that reducing yarn.resourcemanager.zk-timeout-ms reduces the timeout for ZK-store
session as well. I am not sure going as low as 5 seconds is acceptable for store operations.


[~xgong] - would it be possible to run a reasonably heavy workload (1000s of apps) with 5s
default, and see if that causes any issues? Otherwise, I could set one of our RM HA clusters
to use 5s timeout and see what happens. 

> Yarn standby RM taking long to transition to active
> ---------------------------------------------------
>
>                 Key: YARN-1878
>                 URL: https://issues.apache.org/jira/browse/YARN-1878
>             Project: Hadoop YARN
>          Issue Type: Bug
>    Affects Versions: 2.4.0
>            Reporter: Arpit Gupta
>            Assignee: Xuan Gong
>         Attachments: YARN-1878.1.patch
>
>
> In our HA tests we are noticing that some times it can take upto 10s for the standby
RM to transition to active.



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