IO Exception in Map Tasks

[Rakhi Khatwani]

Hi,

      In one of the map tasks, i get the following exception:
      java.io.IOException: Task process exit with nonzero status of 255.
at org.apache.hadoop.mapred.TaskRunner.run(TaskRunner.java:424)

java.io.IOException: Task process exit with nonzero status of 255.
at org.apache.hadoop.mapred.TaskRunner.run(TaskRunner.java:424)

what could be the reason?

Thanks,
Raakhi