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https://issues.apache.org/jira/browse/HADOOP-3860?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12618536#action_12618536
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Konstantin Shvachko commented on HADOOP-3860:
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You probably know that better than I do. But the point of the benchmarking was
to compare nfs vs local drives.
There was a suspicion that ios to nfs are substantially slower then to local
drives, and it turned out to be pretty much the same.
It would even better of course if we could fine tune nfs.
> Compare name-node performance when journaling is performed into local
> hard-drives or nfs.
> -----------------------------------------------------------------------------------------
>
> Key: HADOOP-3860
> URL: https://issues.apache.org/jira/browse/HADOOP-3860
> Project: Hadoop Core
> Issue Type: Improvement
> Affects Versions: 0.19.0
> Reporter: Konstantin Shvachko
> Assignee: Konstantin Shvachko
> Fix For: 0.19.0
>
> Attachments: NNThruputMoreOps.patch
>
>
> The goal of this issue is to measure how the name-node performance depends on
> where the edits log is written to.
> Three types of the journal storage should be evaluated:
> # local hard drive;
> # remote drive mounted via nfs;
> # nfs filer.
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