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Posted to hdfs-issues@hadoop.apache.org by "Andrew Wang (JIRA)" <ji...@apache.org> on 2014/02/21 00:05:26 UTC

[jira] [Work started] (HDFS-5988) Bad fsimage generated after upgrade

     [ https://issues.apache.org/jira/browse/HDFS-5988?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Work on HDFS-5988 started by Andrew Wang.

> Bad fsimage 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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