private void removeRequestStageAndTasks(Long requestId) {
    removeTasks(requestId);
    removeStages(requestId);
    removeRequest(requestId);
  }
Removes entries from {@link #activeTasksMap},{@link #activeStageMap} and {@link #activeRequestMap}
@param requestId request id whose entry and it's stage and task entries is to be removed
ambari-server/src/main/java/org/apache/ambari/server/events/listeners/tasks/TaskStatusListener.java