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From "Bikas Saha (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-1559) Race between ServerRMProxy and ClientRMProxy setting RMProxy#INSTANCE
Date Mon, 06 Jan 2014 17:57:54 GMT

    [ https://issues.apache.org/jira/browse/YARN-1559?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13863163#comment-13863163
] 

Bikas Saha commented on YARN-1559:
----------------------------------

I am guessing stability of the flaky test is the testing for this patch. But I see TestRMFailover
reported failed in Jenkins for this patch?

> Race between ServerRMProxy and ClientRMProxy setting RMProxy#INSTANCE
> ---------------------------------------------------------------------
>
>                 Key: YARN-1559
>                 URL: https://issues.apache.org/jira/browse/YARN-1559
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: resourcemanager
>    Affects Versions: 2.4.0
>            Reporter: Karthik Kambatla
>            Assignee: Karthik Kambatla
>            Priority: Blocker
>         Attachments: YARN-1559-20140105.txt, yarn-1559-1.patch, yarn-1559-2.patch, yarn-1559-3.patch
>
>
> RMProxy#INSTANCE is a non-final static field and both ServerRMProxy and ClientRMProxy
set it. This leads to races as witnessed on - YARN-1482.
> Sample trace:
> {noformat}
> java.lang.IllegalArgumentException: RM does not support this client protocol
>         at com.google.common.base.Preconditions.checkArgument(Preconditions.java:88)
>         at org.apache.hadoop.yarn.client.ClientRMProxy.checkAllowedProtocols(ClientRMProxy.java:119)
>         at org.apache.hadoop.yarn.client.ConfiguredRMFailoverProxyProvider.init(ConfiguredRMFailoverProxyProvider.java:58)
>         at org.apache.hadoop.yarn.client.RMProxy.createRMFailoverProxyProvider(RMProxy.java:158)
>         at org.apache.hadoop.yarn.client.RMProxy.createRMProxy(RMProxy.java:88)
>         at org.apache.hadoop.yarn.server.api.ServerRMProxy.createRMProxy(ServerRMProxy.java:56)
> {noformat}



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