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Posted to hdfs-dev@hadoop.apache.org by "Rushabh S Shah (JIRA)" <ji...@apache.org> on 2014/04/23 18:15:21 UTC

[jira] [Resolved] (HDFS-5773) NN may reject formerly dead DNs

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

Rushabh S Shah resolved HDFS-5773.
----------------------------------

    Resolution: Not a Problem

> 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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