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From "Min Zhou (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (MAPREDUCE-2425) Distributed simulator for stressing JobTracker and NameNode
Date Fri, 08 Apr 2011 04:06:05 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-2425?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Min Zhou updated MAPREDUCE-2425:

    Attachment: .jpg

A screenshot of this tool. we are using hadoop 0.19.1

> Distributed simulator for stressing JobTracker and NameNode
> -----------------------------------------------------------
>                 Key: MAPREDUCE-2425
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2425
>             Project: Hadoop Map/Reduce
>          Issue Type: New Feature
>          Components: benchmarks
>            Reporter: Min Zhou
>              Labels: benchmark, hadoop
>             Fix For: 0.22.0
>         Attachments: .jpg
> Hadoop need a tool for stressing JobTracker and NameNode. Mumak introduced a simulated
JobTracker, whose behavior doesn't exactly like that of the real JobTracker. Even more, mumak
can't simulate a large cluster with quite a lot of jobs run on it. On the other hand, Gridmix
v3 need hundreds of physical nodes to replay job stories. 
> You can think this tool a complementation of mumak and gridmix v3. We successfully used
this tool to simulate a 12000 nodes cluster through 4 real machines. 
> I've talk to Hong Tang and Scott Chen offline, they suggested me contributing this tool
to the hadoop community.

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