4de0709a13883410aefd9516baf39e853b2abaf8,core/common/src/main/java/alluxio/heartbeat/HeartbeatContext.java,HeartbeatContext,setTimerClass,#String#Class#,71

Before Change


   */
  public static synchronized void setTimerClass(String name,
      Class<? extends HeartbeatTimer> timerClass) {
    if (!sTimerClasses.containsKey(name)) {
      sTimerClasses.put(name, timerClass);
    } else {
      throw new RuntimeException("There is already a timer class for " + name);

After Change


  private static synchronized void setTimerClass(String name,
      Class<? extends HeartbeatTimer> timerClass) {
    if (timerClass == null) {
      sTimerClasses.remove(name);
    } else {
      sTimerClasses.put(name, timerClass);
    }