public Map<String, Integer> getTaskQueueSizes(List<String> taskDefNames) {
        Map<String, Integer> sizes = new HashMap<>();
        for (String taskDefName : taskDefNames) {
            sizes.put(taskDefName, getTaskQueueSize(taskDefName));
        }
        return sizes;
    }
This method removes the task from the un-acked Queue

@param taskId: the taskId that needs to be updated and removed from the unacked queue
@return True in case of successful removal of the taskId from the un-acked queue
core/src/main/java/com/netflix/conductor/service/ExecutionService.java