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From Mike Kendall <mkend...@justin.tv>
Subject only one reduce task?
Date Thu, 03 Dec 2009 22:58:28 GMT
i can't seem to get my cluster to run more than one reduce task...  my
mapred-site.xml looks like this:

<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>

<!-- Put site-specific property overrides in this file. -->
<configuration>
<property>
  <name>mapred.job.tracker</name>
  <value>master:9001</value>
</property>
<property>
  <name>mapred.tasktracker.map.tasks.maximum</name>
  <value>5</value>
</property>

<property>
  <name>mapred.tasktracker.reduce.tasks.maximum</name>
  <value>5</value>
</property>
<property>
  <name>mapred.map.tasks</name>
  <value>40</value>
</property>
<property>
  <name>mapred.reduce.tasks</name>
  <value>8</value>
</property>
<property>
  <name>mapred.jobtracker.taskScheduler</name>
  <value>org.apache.hadoop.mapred.FairScheduler</value>
</property>
<property>
  <name>mapred.fairscheduler.allocation.file</name>
  <value>/usr/local/hadoop/conf/fairshare-pools.xml</value>
</property>
</configuration>

any ideas?  thanks.

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