On Feb 24, 2009, at 4:03 PM, bzheng wrote:
2009-02-23 14:27:50,902 INFO org.apache.hadoop.mapred.TaskTracker: java.lang.OutOfMemoryError: Java heap space
That tells that that your TaskTracker is running out of memory, not your reduce tasks.
I think you are hitting http://issues.apache.org/jira/browse/ HADOOP-4906.
What version of hadoop are you running? Arun
