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https://issues.apache.org/jira/browse/HDFS-1800?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Todd Lipcon updated HDFS-1800:
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Component/s: name-node
Description:
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.
Affects Version/s: Edit log branch (HDFS-1073)
Fix Version/s: Edit log branch (HDFS-1073)
> 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)
>
>
> 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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