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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 Tue, 09 May 2006 19:59:10 GMT
    [ http://issues.apache.org/jira/browse/HADOOP-195?page=comments#action_12378719 ] 

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


Fantastic! I wasnt aware of that optimization.

- Has the map task creation overhead been measured?
- Why not go to gigabyte blocks? 

> 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
>  Attachments: netstat.log, netstat.xls
>
> 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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