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HDFS, mail # user - Reg: Map output copy failure


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Reg: Map output copy failure
Manoj Babu 2012-12-10, 13:09
Hi All

I got the below exception, Is the issue related to
https://issues.apache.org/jira/browse/MAPREDUCE-1182 ?

Am using CDH3U1

2012-12-10 06:22:39,688 FATAL org.apache.hadoop.mapred.Task:
attempt_201211120903_9197_r_000024_0 : Map output copy failure :
java.lang.OutOfMemoryError: Java heap space
at org.apache.hadoop.mapred.ReduceTask$ReduceCopier$MapOutputCopier.shuffleInMemory(ReduceTask.java:1593)
at org.apache.hadoop.mapred.ReduceTask$ReduceCopier$MapOutputCopier.getMapOutput(ReduceTask.java:1453)
at org.apache.hadoop.mapred.ReduceTask$ReduceCopier$MapOutputCopier.copyOutput(ReduceTask.java:1302)
at org.apache.hadoop.mapred.ReduceTask$ReduceCopier$MapOutputCopier.run(ReduceTask.java:1234)

Cheers!
Manoj.
+
Bharath Mundlapudi 2012-12-11, 02:09
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Manoj Babu 2012-12-10, 13:29
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Manoj Babu 2012-12-10, 13:38