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Posted to hdfs-dev@hadoop.apache.org by "Todd Lipcon (JIRA)" <ji...@apache.org> on 2011/04/01 23:05:06 UTC
[jira] [Created] (HDFS-1800) Extend image checksumming to function
with multiple fsimage files
Extend image checksumming to function with multiple fsimage files
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Key: HDFS-1800
URL: https://issues.apache.org/jira/browse/HDFS-1800
Project: Hadoop HDFS
Issue Type: Sub-task
Reporter: Todd Lipcon
Assignee: Todd Lipcon
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[jira] [Resolved] (HDFS-1800) Extend image checksumming to function
with multiple fsimage files
Posted by "Todd Lipcon (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HDFS-1800?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Todd Lipcon resolved HDFS-1800.
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Resolution: Fixed
Hadoop Flags: [Reviewed]
I went ahead and committed this updated patch to the branch. If you have any further followup feel free to comment here and we'll address it post-commit.
> Extend image checksumming to function with multiple fsimage files
> -----------------------------------------------------------------
>
> Key: HDFS-1800
> URL: https://issues.apache.org/jira/browse/HDFS-1800
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: name-node
> Affects Versions: Edit log branch (HDFS-1073)
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Fix For: Edit log branch (HDFS-1073)
>
> Attachments: hdfs-1800-prelim.txt, hdfs-1800.txt, hdfs-1800.txt, hdfs-1800.txt
>
>
> HDFS-903 added the MD5 checksum of the fsimage to the VERSION file in each image directory. This allows it to verify that the FSImage didn't get corrupted or accidentally replaced on disk.
> With HDFS-1073, there may be multiple fsimage_N files in a storage directory corresponding to different checkpoints. So having a single MD5 in the VERSION file won't suffice. Instead we need to store an MD5 per image file.
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