Michael wrote:
java.io.IOException: Task process exit with nonzero status.
        at org.apache.nutch.mapred.TaskRunner.runChild(TaskRunner.java:132)
        at org.apache.nutch.mapred.TaskRunner.run(TaskRunner.java:92)

What do you see in that tasktracker's log? Hopefully there is a more informative error message there.

What version of the mapred branch are you running? I fixed a bug a week and a half ago that could cause this. There was a filehandle leak that resulted in this error after a tasktracker had run more than around 800 tasks. If you have not updated your code recently, please try that.

Doug

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