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Failed job - failed to launch reducer

Question asked by needhelp on May 16, 2012
Latest reply on May 16, 2012 by lohit
executing a simple wordcount mapreduce on my VMWare (single MapR installation)using dhcp (not static IP)
my hosts file:
<pre>
192.168.152.128        joe_vm.localdomain joe_vm
127.0.0.1              localhost.localdomain localhost
::1                    localhost6.localdomain6 localhost6
</pre>
The error I'm getting is:
<pre>
Error: java.lang.NullPointerException
at java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:768)
at org.apache.hadoop.mapred.ReduceTask$ReduceCopier$GetMapEventsThread.getMapCompletionEvents(ReduceTask.java:2966)
at org.apache.hadoop.mapred.ReduceTask$ReduceCopier$GetMapEventsThread.run(ReduceTask.java:2881)
</pre>

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