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https://issues.apache.org/jira/browse/HADOOP-2438?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12561360#action_12561360
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Arun C Murthy commented on HADOOP-2438:
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Arkady, what is the max java heapsize for the child when you notice this OOM?
> In streaming, jobs that used to work, crash in the map phase -- even if the
> mapper is /bin/cat
> ----------------------------------------------------------------------------------------------
>
> Key: HADOOP-2438
> URL: https://issues.apache.org/jira/browse/HADOOP-2438
> Project: Hadoop
> Issue Type: Bug
> Affects Versions: 0.15.1
> Reporter: arkady borkovsky
>
> The exception is either "out of memory" of or "broken pipe" -- see both stack
> dumps bellow.
> st Hadoop input: |null|
> last tool output: |[EMAIL PROTECTED]|
> Date: Sat Dec 15 21:02:18 UTC 2007
> java.io.IOException: Broken pipe
> at java.io.FileOutputStream.writeBytes(Native Method)
> at java.io.FileOutputStream.write(FileOutputStream.java:260)
> at
> java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:65)
> at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:123)
> at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:124)
> at java.io.DataOutputStream.flush(DataOutputStream.java:106)
> at org.apache.hadoop.streaming.PipeMapper.map(PipeMapper.java:96)
> at org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:50)
> at org.apache.hadoop.mapred.MapTask.run(MapTask.java:192)
> at
> org.apache.hadoop.mapred.TaskTracker$Child.main(TaskTracker.java:1760)
> at org.apache.hadoop.streaming.PipeMapper.map(PipeMapper.java:107)
> at org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:50)
> at org.apache.hadoop.mapred.MapTask.run(MapTask.java:192)
> at
> org.apache.hadoop.mapred.TaskTracker$Child.main(TaskTracker.java:1760)
> -------------------------------------------------
> java.io.IOException: MROutput/MRErrThread
> failed:java.lang.OutOfMemoryError: Java heap space
> at java.util.Arrays.copyOf(Arrays.java:2786)
> at java.io.ByteArrayOutputStream.write(ByteArrayOutputStream.java:94)
> at java.io.DataOutputStream.write(DataOutputStream.java:90)
> at org.apache.hadoop.io.Text.write(Text.java:243)
> at org.apache.hadoop.mapred.MapTask$MapOutputBuffer.collect
> (MapTask.java:347)
> at org.apache.hadoop.streaming.PipeMapRed$MROutputThread.run
> (PipeMapRed.java:344)
> at org.apache.hadoop.streaming.PipeMapper.map(PipeMapper.java:76)
> at org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:50)
> at org.apache.hadoop.mapred.MapTask.run(MapTask.java:192)
> at org.apache.hadoop.mapred.TaskTracker$Child.main(TaskTracker.java:
> 1760)
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