boolean clearNamedQueue(NamedQueuePayload.NamedQueueEvent namedQueueEvent) {
    return namedQueueServices.get(namedQueueEvent).clearNamedQueue();
  }
Cleans up queues maintained by services.
@param namedQueueEvent type of queue to clear
@return true if queue is cleaned up, false otherwise
hbase-server/src/main/java/org/apache/hadoop/hbase/namequeues/LogEventHandler.java