title: Maven dependency for java.lang.NoClassDefFoundError: org/apache/spark/streaming/util/Clock
body: <p>I tried a lot but still not able to see the maven dependency for 
  java.lang.NoClassDefFoundError: org/apache/spark/streaming/util/Clock</p>
  
  <p>Could somebody please let me know the best way to find the dependency if we have some good practice. Thanks</p>