crawlingInfoHelper.putToInfoMap(key, dateFormat.format(new Date()));
        }
    }

    /**
     * Waits for a crawler thread to complete execution.
     * This method handles interruptions gracefully and logs when a crawler process is interrupted.
     *
     * @param crawlerThread the thread to wait for; null threads are ignored
     */
    private void joinCrawlerThread(final Thread crawlerThread) {

     * to confirm that it is running. If the main thread's stop() call happens
     * before it has the chance, the test will fail. To avoid this, the main
     * thread calls this method, which waits until the service has performed
     * its own "running" check.
     */
    void awaitRunChecks() throws InterruptedException {
      assertTrue(
          "Service thread hasn't finished its checks. "

     * to confirm that it is running. If the main thread's stop() call happens
     * before it has the chance, the test will fail. To avoid this, the main
     * thread calls this method, which waits until the service has performed
     * its own "running" check.
     */
    void awaitRunChecks() throws InterruptedException {
      assertTrue(
          "Service thread hasn't finished its checks. "

            }
        }, "ThumbnailGenerator");
        thumbnailQueueThread.start();
    }

    /**
     * Cleans up resources when the thumbnail manager is destroyed.
     * Stops background processing and waits for threads to complete.
     */
    @PreDestroy
    public void destroy() {
        generating = false;
        thumbnailQueueThread.interrupt();
        try {
            thumbnailQueueThread.join(10000);

    }

    // 0x4f 0x4b 0x6f 0x6b is "OKok".
    writePing(false, AWAIT_PING, 0x4f4b6f6b)
  }

  /** For testing: awaits a pong. */
  @Throws(InterruptedException::class)
  fun awaitPong() {
    withLock {
      while (awaitPongsReceived < awaitPingsSent) {
        wait()
      }
    }
  }

  @Throws(IOException::class)
  fun flush() {
    writer.flush()
  }

  /**

// to tasks channel being backlogged.
func (t *transitionState) MissedImmediateTasks() int64 {
	return t.missedImmediateTasks.Load()
}

// worker waits for transition tasks
func (t *transitionState) worker(objectAPI ObjectLayer) {
	for {
		select {
		case <-t.killCh:
			return
		case <-t.ctx.Done():
			return
		case task, ok := <-t.transitionCh:

                current = getSystemCpuPercent();
            }
        } finally {
            waitingThreadNames.remove(threadName);
        }
        return true;
    }

    /**
     * Waits for all waiting threads to complete.
     */
    public void waitForNoWaitingThreads() {
        int count = waitingThreadNames.size();
        while (count > 0) {
            if (logger.isInfoEnabled()) {

ts feature gate. It can be used to tell kubeadm to wait for all control plane components to be ready when running "kubeadm init" or "kubeadm join --control-plane". Currently kubeadm only waits for the kube-apiserver. The "kubeadm join" workflow now includes a new experimental phase called "wait-control-plane". This phase will be marked as non-experimental when WaitForAllControlPlaneComponents becomes GA. Accordingly a "kubeadm init" phase "wait-control-plane" will also be available once WaitForA...

  * Minimum CPU limits is 10m. This is a Linux Kernel limitation
  * “kubectl rollout undo” (i.e. rollback) will hang on paused deployments, because
paused deployments can’t be rolled back (this is expected), and the command
waits for rollback events to return the result. Users should use “kubectl
rollout resume” to resume a deployment before rolling back.
  * “kubectl edit <list>” will open the editor multiple times, once for each
resource in the list.

mc event list myminio/images
arn:minio:sqs::1:amqp s3:ObjectCreated:*,s3:ObjectRemoved:* Filter: suffix=”.jpg”
```

### Step 3: Test on RabbitMQ

The python program below waits on the queue exchange `bucketevents` and prints event notifications on the console. We use [Pika Python Client](https://www.rabbitmq.com/tutorials/tutorial-three-python.html) library to do this.

```py
#!/usr/bin/env python