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https://issues.apache.org/jira/browse/YARN-1559?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13862677#comment-13862677
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Xuan Gong commented on YARN-1559:
---------------------------------
[~vinodkv], [~kkambatl]
Verified. The latest path fixes issue observed on YARN-1482.
> 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
>
>
> 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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