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https://issues.apache.org/jira/browse/HADOOP-2987?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robert Chansler resolved HADOOP-2987.
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Resolution: Fixed
Fix Version/s: 0.18.0
Current procedures do keep the most recent checkpoint and the penultimate
checkpoint. (Exactly two.)
Good enough!
> Keep two generations of fsimage
> -------------------------------
>
> Key: HADOOP-2987
> URL: https://issues.apache.org/jira/browse/HADOOP-2987
> Project: Hadoop Core
> Issue Type: Improvement
> Components: dfs
> Reporter: Robert Chansler
> Assignee: Konstantin Shvachko
> Fix For: 0.18.0
>
>
> Checkpoint to verify the fsimage each time it creates the new one.
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