You will need to figure out why your task crashed, Check the task logs, there may be some messages there, that give you a hint as to what is going on.
you can enable saving failed task logs and then run the task standalone in the isolation runner. chapter 7 of my book (alpha available) provides details on this, hoping the failure repeats in the controlled environment. You could unlimit the core dump size, via hadoop-env.sh *ulimit -c unlimited *, but that will require that the failed task logs be available as the core will be in the task working directory. On Mon, Apr 27, 2009 at 1:30 AM, Rakhi Khatwani <rakhi.khatw...@gmail.com>wrote: > Thanks Jason, > is there any way we can avoid this exception?? > > Thanks, > Raakhi > > On Mon, Apr 27, 2009 at 1:20 PM, jason hadoop <jason.had...@gmail.com > >wrote: > > > The jvm had a hard failure and crashed > > > > > > On Sun, Apr 26, 2009 at 11:34 PM, Rakhi Khatwani > > <rakhi.khatw...@gmail.com>wrote: > > > > > 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 > > > > > > > > > > > -- > > Alpha Chapters of my book on Hadoop are available > > http://www.apress.com/book/view/9781430219422 > > > -- Alpha Chapters of my book on Hadoop are available http://www.apress.com/book/view/9781430219422
