Hi, In spark-0.9.0-incubating, Master.scala, line 170
logInfo("Registering worker %s:%d with %d cores, %s RAM".format( host, workerPort, cores, Utils.megabytesToString(memory))) might need to be corrected to: logInfo("Registering worker %s:%d with %d cores, %s RAM".format( workerHost, workerPort, cores, Utils.megabytesToString(memory)))