Yes, there are ways to debug. One is to attach a remote debugger, set breakpoints, etc., like so: https://www.google.com/search?q=attach+remote+debugger+java+example+eclipse+or+intellij
The other would be to write a log4j.properties file for Mahout and/or Hadoop and set the logging level to "more wordy", like DEBUG. I did this with Hadoop years ago and recently tried with Mahout but didn't get it working. The remote debugger would let you step through code while the DEBUG level would open up some more informative stack traces as I understand. On Fri, Mar 14, 2014 at 2:47 AM, Mahmood Naderan <nt_mahm...@yahoo.com>wrote: > Hello, > 1- Can we debug Hadoop/Mahout with the available bin files? Or we have to > do rebuild them? Probably they are compiled with optimizations > 2- I cannot find a procedure on "how to build Hadoop/Mahout in debug > mode". If anyone knows, please let me know. > > Since I am a gcc/make guy, maybe these are noob questions in > Hadoop/Mahout. But I don't know the details! Thanks for any help > > > Regards, > Mahmood
