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Posted to common-dev@hadoop.apache.org by "Doug Cutting (JIRA)" <ji...@apache.org> on 2006/05/25 00:38:30 UTC

[jira] Updated: (HADOOP-195) improve performance of map output transfers

     [ http://issues.apache.org/jira/browse/HADOOP-195?page=all ]

Doug Cutting updated HADOOP-195:
--------------------------------

    Summary: improve performance of map output transfers  (was: transfer map output transfer with http instead of rpc)

> improve performance of map output transfers
> -------------------------------------------
>
>          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: MapFileSimulator.java, data-transfer-chart.pdf, mapfilesimulator-big.txt, mapfilesimulator-sort2.txt, netstat.log, netstat.xls, parallel-copiers.txt
>
> 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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