public void unsubscribeChildChanges(String path, IZkChildListener childListener) {
    zkClient.unsubscribeChildChanges(path, childListener);
  }
Method is used to get the <i>sorted</i> list of processors ids for a given list of znodes
@param znodeIds - list of relative paths of the children's znodes
@return List of processor ids for a given list of znodes
samza-core/src/main/java/org/apache/samza/zk/ZkUtils.java