sb.append(DELIMITER_STRING);
        }
        sb.append(comp);
      }
      dummy ^= sb.toString().length();
    }
    return dummy;
  }

  /**
   * Similar to the above, but keeps a boolean flag rather than checking for the string accumulated
   * so far being empty. As a result, it does not have the above-mentioned bug.
   */
  @Benchmark
  int booleanIfFirst(int reps) {
    int dummy = 0;

				}
				mu.Unlock()
			}(clnt)
		}
		wg.Wait()

		select {
		case <-ctx.Done():
			return ctx.Err()
		default:
			// Sleep and stagger to avoid blocked CPU and thundering
			// herd upon start up sequence.
			time.Sleep(25*time.Millisecond + time.Duration(rand.Int63n(int64(100*time.Millisecond))))
			retries++
			// after 20 retries start logging that servers are not reachable yet

        }
        
        return CompletableFuture.supplyAsync(() -> {
            try {
                // Wait before retry (except first attempt)
                if (attempt > 0) {
                    Thread.sleep(retryDelay * attempt);
                }
                
                // Create reconnect context
                DurableHandleReconnect reconnectCtx = 
                    new DurableHandleReconnect(info.fileId);

		t.Fatalf("errors happened when update: %v", err)
	}

	var user3 User
	DB.Preload("Account").Find(&user3, "id = ?", user.ID)

	CheckUser(t, user2, user3)
	lastUpdatedAt := user2.Account.UpdatedAt
	time.Sleep(time.Second)

	if err := DB.Session(&gorm.Session{FullSaveAssociations: true}).Save(&user).Error; err != nil {
		t.Fatalf("errors happened when update: %v", err)
	}

	var user4 User

    // Racy causing flaky tests
    // assertThat(taskRunner.activeQueues()).isNotEmpty()
    assertThat(taskRunnerThreads).isNotEmpty()
    Thread.sleep(100)
    for (t in taskRunnerThreads) {
      t.interrupt()
    }
    Thread.sleep(100)
    assertThat(taskRunner.activeQueues()).isEmpty()
  }

  @Test fun connectionPreWarmingHttp1() {
    taskFaker.advanceUntil(System.nanoTime())

        // Start indexer in separate thread
        indexUpdater.start();

        // Let it run briefly
        ThreadUtil.sleep(100);

        // Stop the indexer
        indexUpdater.setFinishCrawling(true);

        // Wait for completion with longer timeout
        indexUpdater.join(3000);

      taskFaker.sleep(100.µs)
      log += "red:finishing@${taskFaker.nanoTime}"
    }
    assertThat(taskFaker.executeCallCount).isEqualTo(1)

    // Enqueueing the blue task doesn't start a thread because the red one is still starting.
    blueQueue.execute("blue task") {
      log += "blue:starting@${taskFaker.nanoTime}"
      taskFaker.sleep(100.µs)

	g := errgroup.WithNErrs(len(buckets))
	bucketMetas := make([]BucketMetadata, len(buckets))
	for index := range buckets {
		g.Go(func() error {
			// Sleep and stagger to avoid blocked CPU and thundering
			// herd upon start up sequence.
			time.Sleep(25*time.Millisecond + time.Duration(rand.Int63n(int64(100*time.Millisecond))))

			_, _ = sys.objAPI.HealBucket(ctx, buckets[index], madmin.HealOpts{Recreate: true})

        new Callable<@Nullable Void>() {
          @Override
          public @Nullable Void call() throws Exception {
            // adds two nanoseconds to the ticker
            ticker.advance(1L);
            Thread.sleep(10);
            ticker.advance(1L);
            return null;
          }
        });

    assertEquals(numberOfThreads * 2, ticker.read());
  }

  @GwtIncompatible // concurrency

        manager.requestDurableHandle("/test/file.txt", HandleType.DURABLE_V2, 100, // 100ms timeout
                null);

        // Wait for expiration
        try {
            Thread.sleep(150);
        } catch (InterruptedException e) {
            Thread.currentThread().interrupt();
        }

        HandleInfo info = manager.getHandleForReconnect("/test/file.txt");
        assertNull(info);