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From "Uma Maheswara Rao G (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HDFS-1690) Name Node should not process format command while it is running.
Date Fri, 18 Mar 2011 11:09:30 GMT

     [ https://issues.apache.org/jira/browse/HDFS-1690?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Uma Maheswara Rao G updated HDFS-1690:
--------------------------------------

    Status: Patch Available  (was: Open)

> Name Node should not process format command while it is running.
> ----------------------------------------------------------------
>
>                 Key: HDFS-1690
>                 URL: https://issues.apache.org/jira/browse/HDFS-1690
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: name-node
>    Affects Versions: 0.21.0, 0.20.2, 0.20.1
>            Reporter: Uma Maheswara Rao G
>            Assignee: Uma Maheswara Rao G
>         Attachments: HDFS-1690.patch
>
>
> Currently NameNode allows format command while it running. In this case the command is
executed partially (Lock file is deleted) and an exception thrown. Because of this Name Node
should be formatted after restart. This sort of cases can happen accidentally. To prevent
such cases Name Node should not execute the format command partially while it is running.
It can stright away throw exception/log saying, Name Node is running.

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