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From "Andrew Wang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-5988) Bad fsimage always generated after upgrade
Date Fri, 21 Feb 2014 00:47:25 GMT

    [ https://issues.apache.org/jira/browse/HDFS-5988?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13907801#comment-13907801

Andrew Wang commented on HDFS-5988:

Thanks for the review Jing, I'll commit if test-patch comes back clean.

> Bad fsimage always generated after upgrade
> ------------------------------------------
>                 Key: HDFS-5988
>                 URL: https://issues.apache.org/jira/browse/HDFS-5988
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: namenode
>    Affects Versions: 2.4.0
>            Reporter: Andrew Wang
>            Assignee: Andrew Wang
>            Priority: Blocker
>         Attachments: hdfs-5988-1.patch
> Internal testing revealed an issue where, after upgrading from an earlier release, we
always fail to save a correct PB-based fsimage (namely, missing inodes leading to an inconsistent
namespace). This results in substantial data loss, since the upgraded fsimage is broken, as
well as the fsimages generated by saveNamespace and checkpointing.
> This ended up being a bug in the old fsimage loading code, patch coming.

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