I think the infinite loop theory is good. As a crude way to debug, you can log on to a worker machine, locate the java process that may be stuck, and:
kill -QUIT [java process ID] This just makes it dump its stack for each thread. Do that a few times and you may easily spot an infinite loop situation because it will just be in the same place over and over. http://java.sun.com/developer/technicalArticles/Programming/Stacktrace/ On Tue, May 4, 2010 at 12:15 AM, Tamas Jambor <jambo...@googlemail.com> wrote: > It should be OK, because the hosts are in a local network, properly set up > by the IT support. > > I guess the conf files should be OK too, because it runs the first two jobs > without a problem only fails with the third. and it runs other hadoop > examples. > > I will look into how to debug a hadoop project, maybe I can trace down the > problem that way. >
