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From "Jian He (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-513) Create common proxy client for communicating with RM
Date Tue, 21 May 2013 05:11:16 GMT

    [ https://issues.apache.org/jira/browse/YARN-513?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13662694#comment-13662694
] 

Jian He commented on YARN-513:
------------------------------

Xuan, thanks for your comments.
I did the above tests already. Currently, its able to catch ConnectException, but not able
to catch EOFException which is thrown when the connection is lost, since EOFException is already
wrapped as IOException deep down the RPC layer see HADOOP-9576. The solution now is to add
IOException to the exceptionToPolicyMap. After HADOOP-9576, we can catch EOFException

I uploaded the latest patch which only adds one line change:
exceptionToPolicyMap.put(IOException.class, retryPolicy);

Enjoy your honey moon~
                
> Create common proxy client for communicating with RM
> ----------------------------------------------------
>
>                 Key: YARN-513
>                 URL: https://issues.apache.org/jira/browse/YARN-513
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: resourcemanager
>            Reporter: Bikas Saha
>            Assignee: Jian He
>         Attachments: YARN-513.1.patch, YARN-513.2.patch, YARN-513.3.patch, YARN-513.4.patch,
YARN.513.5.patch, YARN-513.6.patch, YARN-513.7.patch
>
>
> When the RM is restarting, the NM, AM and Clients should wait for some time for the RM
to come back up.

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