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From "Vinay (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-3507) DFS#isInSafeMode needs to execute only on Active NameNode
Date Mon, 18 Jun 2012 05:19:43 GMT

     [ https://issues.apache.org/jira/browse/HDFS-3507?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Vinay updated HDFS-3507:
------------------------

    Target Version/s: 2.0.1-alpha, 3.0.0
              Status: Patch Available  (was: Open)
    
> DFS#isInSafeMode needs to execute only on Active NameNode
> ---------------------------------------------------------
>
>                 Key: HDFS-3507
>                 URL: https://issues.apache.org/jira/browse/HDFS-3507
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: ha
>    Affects Versions: 2.0.1-alpha, 3.0.0
>            Reporter: Vinay
>            Assignee: Vinay
>         Attachments: HDFS-3507.patch
>
>
> Currently DFS#isInSafeMode is not Checking for the NN state. It can be executed on any
of the NNs.
> But HBase will use this API to check for the NN safemode before starting up its service.
> If first NN configured is in standby then DFS#isInSafeMode will check standby NNs safemode
but hbase want state of Active NN.

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