Hi, Sometimes when I run mumak, I'll get the following exception. I would rerun it with exactly same trace files and eventually it will succeed without any exceptions.
Any idea why I'm getting this exception? Exception in thread "main" java.lang.NullPointerException at org.apache.hadoop.tools.rumen.ZombieJob.makeUpMapRuntime(ZombieJob.java:749) at org.apache.hadoop.tools.rumen.ZombieJob.makeUpTaskAttemptInfo(ZombieJob.java:684) at org.apache.hadoop.tools.rumen.ZombieJob.getMapTaskAttemptInfoAdjusted(ZombieJob.java:475) at org.apache.hadoop.mapred.SimulatorJobStory.getMapTaskAttemptInfoAdjusted(SimulatorJobStory.java:61) at org.apache.hadoop.mapred.SimulatorJobInProgress.getMapTaskAttemptInfo(SimulatorJobInProgress.java:216) at org.apache.hadoop.mapred.SimulatorJobInProgress.getTaskAttemptInfo(SimulatorJobInProgress.java:261) at org.apache.hadoop.mapred.SimulatorJobTracker.heartbeat(SimulatorJobTracker.java:443) at org.apache.hadoop.mapred.SimulatorTaskTracker.processHeartbeatEvent(SimulatorTaskTracker.java:675) at org.apache.hadoop.mapred.SimulatorTaskTracker.accept(SimulatorTaskTracker.java:188) at org.apache.hadoop.mapred.SimulatorEngine.run(SimulatorEngine.java:235) at org.apache.hadoop.mapred.SimulatorEngine.run(SimulatorEngine.java:259) at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:69) at org.apache.hadoop.mapred.SimulatorEngine.main(SimulatorEngine.java:251) -Harold
