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From "Konstantin Shvachko (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-3860) Compare name-node performance when journaling is performed into local hard-drives or nfs.
Date Thu, 31 Jul 2008 01:06:31 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-3860?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12618573#action_12618573
] 

Konstantin Shvachko commented on HADOOP-3860:
---------------------------------------------

I edited a typo in the formula explaining throughput:
  -- 1,000,000/(tE-tE)
 + 1,000,000/(tE-tB)

> 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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