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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-763) NameNode benchmark using mapred is insufficient
Date Thu, 30 Nov 2006 22:37:22 GMT
    [ http://issues.apache.org/jira/browse/HADOOP-763?page=comments#action_12454771 ] 
            
Hadoop QA commented on HADOOP-763:
----------------------------------

+1, http://issues.apache.org/jira/secure/attachment/12346076/HADOOP-763.patch applied and
successfully tested against trunk revision 480686

> NameNode benchmark using mapred is insufficient
> -----------------------------------------------
>
>                 Key: HADOOP-763
>                 URL: http://issues.apache.org/jira/browse/HADOOP-763
>             Project: Hadoop
>          Issue Type: Improvement
>          Components: test
>    Affects Versions: 0.8.0
>            Reporter: Nigel Daley
>         Assigned To: Nigel Daley
>            Priority: Minor
>             Fix For: 0.9.0
>
>         Attachments: HADOOP-763.patch
>
>
> The current namenode benchmark (org.apache.hadoop.examples.NNBench) uses map/reduce to
distribute a load on the namenode.  For the purposes of loading the namenode, this model gives
insufficient control over job start and failure recovery.  I propose the namenode benchmark
be re-written to use slaves.sh directly to execute the namenode benchmark.  The benchmark
should also give finer control over the operations executed and the timings reported.

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