stopping spark stream app

[Shushant Arora]

Hi

I am using spark stream 1.3 and using custom checkpoint to save kafka
offsets.

1.Is doing
Runtime.getRuntime().addShutdownHook(new Thread() {
  @Override
  public void run() {
  jssc.stop(true, true);
   System.out.println("Inside Add Shutdown Hook");
  }
 });

to handle stop is safe ?

2.And I need to handle saving checkoinnt in shutdown hook also or driver
will handle it automatically since it grcaefully stops stream and handle
completion of foreachRDD function on stream ?
directKafkaStream.foreachRDD(new Function<JavaRDD<byte[][]>, Void>() {
}

Thanks