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From "Tsz Wo (Nicholas), SZE (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-4232) NN fails to write a fsimage with stale leases
Date Thu, 29 Nov 2012 20:16:59 GMT

    [ https://issues.apache.org/jira/browse/HDFS-4232?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13506752#comment-13506752
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Tsz Wo (Nicholas), SZE commented on HDFS-4232:
----------------------------------------------

Hi Daryn, 

Good catch on #2!  It is a valid concern but I think it unlikely causes the problem here.
 Let's fix it separately.

How do renames cause double leases?
                
> NN fails to write a fsimage with stale leases
> ---------------------------------------------
>
>                 Key: HDFS-4232
>                 URL: https://issues.apache.org/jira/browse/HDFS-4232
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: namenode
>    Affects Versions: 0.23.0
>            Reporter: Daryn Sharp
>            Assignee: Daryn Sharp
>            Priority: Blocker
>         Attachments: HDFS-4232.patch
>
>
> The reading of a fsimage will ignore leases for non-existent files, but the writing of
an image will fail if there are leases for non-existent files.  If the image contains leases
that reference a non-existent file, then the NN will fail to start, and the 2NN will start
but fail to ever write an image.

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