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List:       hadoop-user
Subject:    How to deal with SocketTimeoutException?
From:       Inifok Song <hadoop.inifok () gmail ! com>
Date:       2009-08-28 14:09:16
Message-ID: 3b1311780908280709s6fe8f935y96edc27fed9ced11 () mail ! gmail ! com
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Hi all,

In my cluster, reduce tasks often throw SocketTimeoutException when there
are a lot of tasks. The critical log is below

at
org.apache.hadoop.mapred.ReduceTask$ReduceCopier$MapOutputCopier.getInputStream(ReduceTask.java:1357)

at
org.apache.hadoop.mapred.ReduceTask$ReduceCopier$MapOutputCopier.getMapOutput(ReduceTask.java:1293)

at
org.apache.hadoop.mapred.ReduceTask$ReduceCopier$MapOutputCopier.copyOutput(ReduceTask.java:1196)

So I think it may be caused by jetty. How can I get jetty's settings and
modify it? Is it really caused by jetty or there are other reason? I need
your help, my friends.

Thank you.

Inifok


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