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From "Tsz Wo (Nicholas), SZE (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (HDFS-5753) Add new NN startup options for downgrade and rollback using upgrade marker
Date Fri, 10 Jan 2014 06:22:50 GMT

     [ https://issues.apache.org/jira/browse/HDFS-5753?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Tsz Wo (Nicholas), SZE reassigned HDFS-5753:
--------------------------------------------

    Assignee: Tsz Wo (Nicholas), SZE

> Add new NN startup options for downgrade and rollback using upgrade marker 
> ---------------------------------------------------------------------------
>
>                 Key: HDFS-5753
>                 URL: https://issues.apache.org/jira/browse/HDFS-5753
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: namenode
>            Reporter: Tsz Wo (Nicholas), SZE
>            Assignee: Tsz Wo (Nicholas), SZE
>
> Namenode could be started up with -upgrade / -rollback.  The -rollback option will restore
the data using the previous directory.  New options are needed for downgrade and rollback
using the upgrade marker.



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