@RestrictedApi(explanation = "Should only be called in ScheduledChore", link = "",
      allowedOnPath = ".*/org/apache/hadoop/hbase/ScheduledChore.java")
  synchronized void triggerNow(ScheduledChore chore) {
    assert chore.getChoreService() == this;
    rescheduleChore(chore, true);
  }
This method tries to execute the chore immediately. If the chore is executing at the time of
this call, the chore will begin another execution as soon as the current execution finishes
hbase-common/src/main/java/org/apache/hadoop/hbase/ChoreService.java