//                                                                         ===========
    protected final ColumnInfo _columnEndTime = cci("endTime", "endTime", null, null, Long.class, "endTime", null, false, false, false,
            "Long", 0, 0, null, null, false, null, null, null, null, null, false);
    protected final ColumnInfo _columnJobName = cci("jobName", "jobName", null, null, String.class, "jobName", null, false, false, false,

    /**
     * Timeout in milliseconds for thumbnail task queue operations.
     */
    protected long thumbnailTaskQueueTimeout = 10 * 1000L;

    /**
     * Expiration time in milliseconds for no-image placeholder files.
     */
    protected long noImageExpired = 24 * 60 * 60 * 1000L; // 24 hours

    /**
     * Hash size for splitting thumbnail storage directories.
     */

        private final int activeSessions;
        private final int totalChannels;
        private final long totalRequests;
        private final long totalChannelsCreated;

        public ChannelStatistics(int activeSessions, int totalChannels, long totalRequests, long totalChannelsCreated) {
            this.activeSessions = activeSessions;
            this.totalChannels = totalChannels;

   * {@code expectedInsertions} that was used when constructing the filter.
   *
   * @since 22.0
   */
  public long approximateElementCount() {
    long bitSize = bits.bitSize();
    long bitCount = bits.bitCount();

    /*
     * Each insertion is expected to reduce the # of clear bits by a factor of

     * @return the maximum cache age in milliseconds
     */
    public long getMaxCacheAge() {
        return maxCacheAge;
    }

    /**
     * Sets the maximum age for cached directory data
     * @param maxCacheAge the maximum cache age in milliseconds
     */
    public void setMaxCacheAge(long maxCacheAge) {
        this.maxCacheAge = maxCacheAge;
    }

    /**

      if (queue.futureTasks.isEmpty()) {
        readyQueues.removeAt(i)
      }
    }
  }

  interface Backend {
    fun nanoTime(): Long

    fun coordinatorNotify(taskRunner: TaskRunner)

    fun coordinatorWait(
      taskRunner: TaskRunner,
      nanos: Long,
    )

    fun <T> decorate(queue: BlockingQueue<T>): BlockingQueue<T>

    fun execute(
      taskRunner: TaskRunner,

                  startNextTask()
                }
              }
            }
        }

        override fun coordinatorWait(
          taskRunner: TaskRunner,
          nanos: Long,
        ) {
          taskRunner.assertLockHeld()
          check(waitingCoordinatorTask == null)
          if (nanos == 0L) return

          // Yield until notified, interrupted, or the duration elapses.

      "userAgent": {
        "type": "keyword"
      },
      "createdBy": {
        "type": "keyword"
      },
      "createdTime": {
        "type": "long"
      },
      "updatedBy": {
        "type": "keyword"
      },
      "updatedTime": {
        "type": "long"
      }
    }

    "aliases" : { },
    "mappings" : {
      "crawling_info_param" : {
        "properties" : {
          "crawlingInfoId" : {
            "type" : "keyword"
          },
          "createdTime" : {
            "type" : "long"
          },
          "key" : {
            "type" : "keyword"
          },
          "value" : {
            "type" : "keyword"
          }
        }
      }
    },
    "settings" : {

  public static <E> int drainUninterruptibly(
      BlockingQueue<E> q,
      Collection<? super E> buffer,
      int numElements,
      long timeout,
      TimeUnit unit) {
    Preconditions.checkNotNull(buffer);
    long deadline = System.nanoTime() + unit.toNanos(timeout);
    int added = 0;
    boolean interrupted = false;
    try {
      while (added < numElements) {