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From "Eli Collins (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-6667) RPC.waitForProxy should retry through NoRouteToHostException
Date Wed, 31 Mar 2010 22:28:27 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-6667?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12852144#action_12852144
] 

Eli Collins commented on HADOOP-6667:
-------------------------------------

+1  lgtm 

> RPC.waitForProxy should retry through NoRouteToHostException
> ------------------------------------------------------------
>
>                 Key: HADOOP-6667
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6667
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: ipc
>    Affects Versions: 0.21.0, 0.22.0
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>            Priority: Minor
>         Attachments: hadoop-6667.txt
>
>
> RPC.waitForProxy already loops through ConnectExceptions, but NoRouteToHostException
is not a subclass of ConnectException. In the case that the NN is on a VIP, the No Route To
Host error is reasonably common during a failover, so we should retry through it just the
same as the other connection errors.

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