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From "Owen O'Malley (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-195) transfer map output transfer with http instead of rpc
Date Fri, 05 May 2006 18:23:28 GMT
    [ http://issues.apache.org/jira/browse/HADOOP-195?page=comments#action_12378090 ] 

Owen O'Malley commented on HADOOP-195:
--------------------------------------

No, I'm seeing a 0.01% timeout rate. There are 64k*2k = 128m getFile calls. Losing 29k of
them is sub-optimal, but not a serious drain.

> 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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