var readyTask: Task? = null
      var multipleReadyTasks = false

      // Decide what to run. This loop's goal wants to:
      //  * Find out what this thread should do (either run a task or sleep)
      //  * Find out if there's enough work to start another thread.
      eachQueue@ for (queue in readyQueues) {
        val candidate = queue.futureTasks[0]

        HandleInfo expiredHandle = new HandleInfo("/test/file.txt", new HandleGuid(), new byte[16], HandleType.DURABLE_V2, 100, // 100ms timeout
                null);

        // Wait for expiration
        Thread.sleep(150);

        CompletableFuture<HandleInfo> future = reconnector.reconnectHandle(expiredHandle, new IOException("Network error"));

        assertThrows(ExecutionException.class, () -> {
            future.get();

        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

                        log.debug("Change notification failed for: " + handle.directoryPath, e);
                        // Retry after delay
                        try {
                            Thread.sleep(5000);
                        } catch (InterruptedException ie) {
                            Thread.currentThread().interrupt();
                            break;
                        }
                    }

        long oldWordsCount = suggester.getAllWordsNum();
        assertTrue(oldWordsCount > 0);

        // Minimal sleep to ensure timestamp separation (reduced from 2000ms to 100ms total)
        Thread.sleep(50);
        ZonedDateTime threshold = ZonedDateTime.now();
        Thread.sleep(50);

        // Index new data after threshold
        document = new HashMap<>();
        document.put(field, "検索エンジン");

        }
        
        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);

            // Give the writer thread time to process and set exception
            w.wait(100);
        }

        // Wait a bit more to ensure exception is captured
        Thread.sleep(100);

        // Act + Assert: checkException should throw the SmbException captured by the thread
        assertThrows(SmbException.class, w::checkException);

        // Stop the thread
        synchronized (w) {

                dataCrawlingThreadStatusList.set(startedCrawlerNum, Constants.RUNNING);
                startedCrawlerNum++;
                activeCrawlerNum++;
                ThreadUtil.sleep(crawlingExecutionInterval);
                continue;
            }

            // check status
            for (int i = 0; i < startedCrawlerNum; i++) {

                    final long interval = updateInterval - updateTime;
                    if (interval > 0) {
                        // sleep
                        ThreadUtil.sleep(interval); // 10 sec (default)
                    }

                    systemHelper.calibrateCpuLoad();
                    systemHelper.waitForNoWaitingThreads();

            while (!isInterrupted() && !stopIfLeisure()) {
                for (final TimeoutTask task : getExpiredTask()) {
                    processTask(executorService, task);
                }
                Thread.sleep(1000L);
            }
        } catch (final InterruptedException e) {
            if (logger.isDebugEnabled()) {
                logger.debug("Interrupted.", e);
            }
        } finally {