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From "Rushabh S Shah (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (HDFS-5773) NN may reject formerly dead DNs
Date Thu, 17 Apr 2014 20:16:21 GMT

     [ https://issues.apache.org/jira/browse/HDFS-5773?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Rushabh S Shah reassigned HDFS-5773:
------------------------------------

    Assignee: Rushabh S Shah

> NN may reject formerly dead DNs
> -------------------------------
>
>                 Key: HDFS-5773
>                 URL: https://issues.apache.org/jira/browse/HDFS-5773
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: 2.0.0-alpha, 3.0.0, 0.23.10
>            Reporter: Daryn Sharp
>            Assignee: Rushabh S Shah
>            Priority: Critical
>
> If the heartbeat monitor declares a node dead, it may never allow a DN to rejoin.  The
NN will generate messages like "Got blockReceivedDeleted message from unregistered or dead
node".
> There appears to be a bug where the the isAlive flag is not set to true when a formerly
known DN attempts to rejoin.



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