If it is only to get a parse overview of the run you can use counters. But you shouldn't overuse them. You can for example count exceptions by type (but by message is not a good approach unless you are sure that the message is constant.)
Regards Bertrand On Mon, Oct 8, 2012 at 4:13 PM, Terry Healy <the...@bnl.gov> wrote: > Hi- > > Is there a simple way for error output / debug information generated by > a Mapper to be collected in one place for a given M/R job run? I guess > what I'm hoping for is sort of the reverse of a Distributed Cache function. > > Can anyone suggest an approach? > > Thanks, > > Terry > -- Bertrand Dechoux
