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From "paul sutter (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-195) transfer map output transfer with http instead of rpc
Date Fri, 05 May 2006 19:14:28 GMT
    [ http://issues.apache.org/jira/browse/HADOOP-195?page=comments#action_12378110 ] 

paul sutter commented on HADOOP-195:
------------------------------------


glad to hear you're working on a sort benchmark for hadoop.

compare:
- 1 gigabyte in 7 hours on 188 nodes, to
- 1 terabyte in 7 minutes on 80 itaniums

http://research.microsoft.com/barc/SortBenchmark/

cleaning up the sort path will benefit us all greatly!

> transfer map output transfer with http instead of rpc
> -----------------------------------------------------
>
>          Key: HADOOP-195
>          URL: http://issues.apache.org/jira/browse/HADOOP-195
>      Project: Hadoop
>         Type: Improvement

>   Components: mapred
>     Versions: 0.2
>     Reporter: Owen O'Malley
>     Assignee: Owen O'Malley
>      Fix For: 0.3

>
> The data transfer of the map output should be transfered via http instead rpc, because
rpc is very slow for this application and the timeout behavior is suboptimal. (server sends
data and client ignores it because it took more than 10 seconds to be received.)

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