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From "Boris Shkolnik (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-4885) Try to restore failed replicas of Name Node storage (at checkpoint time)
Date Tue, 16 Dec 2008 19:34:44 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-4885?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12657128#action_12657128
] 

Boris Shkolnik commented on HADOOP-4885:
----------------------------------------

Problem:
If one of the replicas of the NameNode storage fails for whatever reason (for example temporarily
 failure of NFS) this Storage object is removed from the list of storage objects forever.
It can be added back only on restart of the NameNode. We propose to check the status of a
failed storage  on every checkpoint and if it becomes valid - try to restore the edits and
fsimage.

> Try to restore failed replicas of Name Node storage (at checkpoint time)
> ------------------------------------------------------------------------
>
>                 Key: HADOOP-4885
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4885
>             Project: Hadoop Core
>          Issue Type: Improvement
>          Components: dfs
>            Reporter: Boris Shkolnik
>


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