Hi everyone! I was trying to launch a Giraph job without using a fat jar. i tried the two possible options (1: copying the Giraph jar in Hadoop lib directory, 2: replicating the libjars functionality) but when i launch the job, it fails… i enabled logging on the tasktracker and on the jobtracker and i found out that it throws a ClassNotFoundException for the computation class which is included in the jar I use when i launch the job. Is there any limitation deriving from how Giraph works that makes only the fat jar work? I am using a pseudo-distributed version of Hadoop v1.2.1 and Giraph 1.1.0-SNAPSHOT-for-hadoop-1.2.1-jar-with-depencies.jar! Best Regards! Betim Beja! Student @ University of Perugia, Italy