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From "Kihwal Lee (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-4885) Try to restore failed replicas of Name Node storage (at checkpoint time)
Date Wed, 21 Mar 2012 16:15:42 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-4885?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13234460#comment-13234460
] 

Kihwal Lee commented on HADOOP-4885:
------------------------------------

- It would be better if the resyncing up to the last closed edit log is done asynchronously.
That way, the NN only needs to sync one or two edits while rolling the log.

- It seems that if a restore fails, rollEditLog() also fails even if there are healthy directories.
Ideally any exceptions from dealing with the removed dirs should be ignored.
                
> 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 Common
>          Issue Type: Improvement
>            Reporter: Boris Shkolnik
>            Assignee: Boris Shkolnik
>             Fix For: 0.21.0
>
>         Attachments: HADOOP-4885-1.patch, HADOOP-4885-3.patch, HADOOP-4885-3.patch, HADOOP-4885.branch-1.patch,
HADOOP-4885.branch-1.patch.2, HADOOP-4885.branch-1.patch.3, HADOOP-4885.patch, HADOOP-4885.patch
>
>


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