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From "Doug Cutting (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-195) transfer map output transfer with http instead of rpc
Date Thu, 04 May 2006 18:00:17 GMT
    [ http://issues.apache.org/jira/browse/HADOOP-195?page=comments#action_12377857 ] 

Doug Cutting commented on HADOOP-195:
-------------------------------------

The RPC mechanism is designed to be able to support large values.  Timeouts are for inactivity
on a request, not for completion.  So perhaps there is just a bug in the RPC mechanism that
can be fixed.  Or perhaps this really is an inappropriate use of it.  I'd like to hear more
about the failures you're seeing before we decide.

> 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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