(Hadoop) MapReduce - Chain jobs - JobControl doesn't stop

Question

I need to chain two MapReduce jobs. I used JobControl to set job2 as dependent of job1. It works, output files are created!! But it doesn\'t stop! In the shell it remains in

Answer 1

Just a tweak to the code snippet what sinemetu1 had shared..

You can drop call to the JobRunner as JobControl by itself implements Runnable

        Thread thread = new Thread(jobControl);
        thread.start();

        while (!jobControl.allFinished()) {
            System.out.println("Still running...");
            Thread.sleep(5000);
        }

I also stumbled upon this link where the user confirms that JobControl can be run ONLY with new thread. https://www.mail-archive.com/common-user@hadoop.apache.org/msg00556.html