[
https://issues.apache.org/jira/browse/HADOOP-3860?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12618809#action_12618809
]
Raghu Angadi commented on HADOOP-3860:
--------------------------------------
It looks as though it is not just the number of mutations but something else
matters as well(may be amount of data written to edits log per mutation, cpu,
or locking). That could explain large disparity between number creates,
renames, and deletes though each of these is single mutation.
> 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.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
