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From "Colin Patrick McCabe (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-4859) Add timeout in FileJournalManager
Date Tue, 28 May 2013 18:52:25 GMT

    [ https://issues.apache.org/jira/browse/HDFS-4859?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13668555#comment-13668555
] 

Colin Patrick McCabe commented on HDFS-4859:
--------------------------------------------

If the NameNode hangs, ZKFC will detect it.
                
> Add timeout in FileJournalManager
> ---------------------------------
>
>                 Key: HDFS-4859
>                 URL: https://issues.apache.org/jira/browse/HDFS-4859
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: ha, namenode
>    Affects Versions: 2.0.4-alpha
>            Reporter: Kihwal Lee
>
> Due to absence of explicit timeout in FileJournalManager, error conditions that incur
long delay (usually until driver timeout) can make namenode unresponsive for long time. This
directly affects NN's failure detection latency, which is critical in HA.

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