@Override
  protected boolean initialChore() {
    synchronized (this) {
      if (forceRun) {
        // wake up the threads waiting in triggerCleanerNow, as a triggerNow may triggers the first
        // loop where we will only call initialChore. We need to trigger another run immediately.
        forceRun = false;
        notifyAll();
      }
    }
    return true;
  }
A utility method to create new instances of LogCleanerDelegate based on the class name of the
LogCleanerDelegate.
@param className fully qualified class name of the LogCleanerDelegate
@param conf      used configuration
@return the new instance
hbase-server/src/main/java/org/apache/hadoop/hbase/master/cleaner/CleanerChore.java