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From "Benoy Antony (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-5367) Restore fsimage locked NameNode too long when the size of fsimage are big
Date Wed, 16 Oct 2013 18:37:43 GMT

    [ https://issues.apache.org/jira/browse/HDFS-5367?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13797094#comment-13797094
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Benoy Antony commented on HDFS-5367:
------------------------------------

+1.
Solves problem on our clusters. 
Please review and commit.
John , could you please provide a patch for trunk as well ?


> Restore fsimage locked NameNode too long when the size of fsimage are big
> -------------------------------------------------------------------------
>
>                 Key: HDFS-5367
>                 URL: https://issues.apache.org/jira/browse/HDFS-5367
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: zhaoyunjiong
>            Assignee: zhaoyunjiong
>         Attachments: HDFS-5367-branch-1.2.patch
>
>
> Our cluster have 40G fsimage, we write one copy of edit log to NFS.
> After NFS temporary failed, when doing checkpoint, NameNode try to recover it, and it
will save 40G fsimage to NFS, it takes some time (> 40G/128MB/s = 320 seconds) , and it
locked FSNamesystem, and this bring down our cluster.



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