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From "Li Lu (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (YARN-4460) [Bug fix] RM fails to start when SMP is enabled
Date Tue, 15 Dec 2015 19:33:46 GMT

     [ https://issues.apache.org/jira/browse/YARN-4460?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Li Lu updated YARN-4460:
------------------------
    Attachment: YARN-4460-feature-YARN-2928.001.patch

Upload a patch to quickly fix this issue. I moved event handler registration logic to serviceInit,
and changed UTs to cover this accordingly. 

> [Bug fix] RM fails to start when SMP is enabled
> -----------------------------------------------
>
>                 Key: YARN-4460
>                 URL: https://issues.apache.org/jira/browse/YARN-4460
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: timelineserver
>    Affects Versions: YARN-2928
>            Reporter: Li Lu
>            Assignee: Li Lu
>         Attachments: YARN-4460-feature-YARN-2928.001.patch
>
>
> When SMP is enabled, the RM starts with the following fatal message: 
> {code}
> FATAL event.AsyncDispatcher (AsyncDispatcher.java:dispatch(189)) - Error in dispatcher
thread true
> java.lang.Exception: No handler for registered for class org.apache.hadoop.yarn.server.resourcemanager.metrics.AbstractSystemMetricsPubli
> sher$SystemMetricsEventType
>        at org.apache.hadoop.yarn.event.AsyncDispatcher.dispatch(AsyncDispatcher.java:185)
>        at org.apache.hadoop.yarn.event.AsyncDispatcher$1.run(AsyncDispatcher.java:109)
>        at java.lang.Thread.run(Thread.java:745)
> {code}
> We should register event handlers in service init stage in TimelineServiceV2Publisher
to fix this problem. 



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