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From "Kihwal Lee (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-8294) IPC Connection becomes unusable even if server address was temporarilly unresolvable
Date Thu, 19 Apr 2012 23:18:42 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-8294?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13257900#comment-13257900
] 

Kihwal Lee commented on HADOOP-8294:
------------------------------------

Enabling dns caching in nscd, etc. can reduce the probability.
                
> IPC Connection becomes unusable even if server address was temporarilly unresolvable
> ------------------------------------------------------------------------------------
>
>                 Key: HADOOP-8294
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8294
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: ipc
>    Affects Versions: 1.0.2
>            Reporter: Kihwal Lee
>            Assignee: Kihwal Lee
>            Priority: Critical
>             Fix For: 1.0.3, 1.1.0
>
>         Attachments: hadoop-8294.patch
>
>
> This is same as HADOOP-7428, but was observed on 1.x data nodes. This can happen more
frequently after HADOOP-7472, which allows IPC Connection to re-resolve the name. HADOOP-7428
needs to be back-ported.

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