code: public void reset() {
      this.poolWriteLock.lock();
      try {
        this.defaultTracer = TracerFactory.NULLTRACER;
        this.threadName2Element.clear();
        this.threadNames.clear();
        this.tracerMap.clear();
        this.tracerPool.clear();
      }
      finally {
        this.poolWriteLock.unlock();
      }
      
      this.queueWriteLock.lock();
      try {
        this.queueConfig = new Queue();
      }
      finally {
        this.queueWriteLock.unlock();
      }
    }
docs: Clears the pool, the mappings and the queue.