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https://issues.apache.org/jira/browse/MAPREDUCE-6141?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14292019#comment-14292019
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Jason Lowe commented on MAPREDUCE-6141:
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All of the findbug warnings are unrelated, filed MAPREDUCE-6225. Committing
this.
> History server leveldb recovery store
> -------------------------------------
>
> Key: MAPREDUCE-6141
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-6141
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: jobhistoryserver
> Reporter: Jason Lowe
> Assignee: Jason Lowe
> Attachments: MAPREDUCE-6141.patch, MAPREDUCE-6141v2.patch,
> MAPREDUCE-6141v2.patch
>
>
> It would be nice to have a leveldb option to the job history server recovery
> store. Leveldb would provide some benefits over the existing filesystem
> store such as better support for atomic operations, fewer I/O ops per state
> update, and far fewer total files on the filesystem.
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