Vivek Krishna wrote: > The Error: > *java.io.IOException: Cannot run program "mapper.py": error=2, No such file > or directory* > *
That's the sort of error you get when the script interpreter doesn't exist. Have you verified the #! path and/or whether Python is even installed on the tasktracker (child/slave/whatever) nodes? If you have the ability to log onto one of the nodes directly, try your command-line (non-Hadoop) test there and make sure it works OK. I also vaguely recall hearing about a bug in which executable perms were not restored on grid nodes in some circumstances, but I _thought_ that applied only to an internal y20 development version. In any case, it was several months ago, which probably means it got fixed right away. Greg
