hadoop-hdfs-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Colin Patrick McCabe (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-4173) If the NameNode has already been formatted, but a QuroumJournal has not, auto-format it on startup
Date Sat, 10 Nov 2012 02:01:13 GMT

     [ https://issues.apache.org/jira/browse/HDFS-4173?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Colin Patrick McCabe updated HDFS-4173:
---------------------------------------

    Attachment: HDFS-4173.001.patch
    
> If the NameNode has already been formatted, but a QuroumJournal has not, auto-format
it on startup
> --------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-4173
>                 URL: https://issues.apache.org/jira/browse/HDFS-4173
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: journal-node, name-node
>    Affects Versions: 2.0.3-alpha
>            Reporter: Colin Patrick McCabe
>            Assignee: Colin Patrick McCabe
>            Priority: Minor
>         Attachments: HDFS-4173.001.patch
>
>
> If we have multiple edit log directories, and some of them are formatted, but others
are not, we format the unformatted ones.  However, when we implemented QuorumJournalManager,
we did not extend this behavior to it.  It makes sense to do this.
> One use case is if you want to add a QuorumJournalManager URI ({{journal://}}) to an
existing {{NameNode}}, without reformatting everything.  There is currently no easy way to
do this, since {{namenode \-format}} will nuke everything, and there's no other way to format
the {{JournalNodes}}.

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira

Mime
View raw message