@Override
    public void removeTaskFromLimit(TaskModel task) {
        try {
            recordCassandraDaoRequests(
                    "removeTaskFromLimit", task.getTaskType(), task.getWorkflowType());
            session.execute(
                    deleteTaskDefLimitStatement.bind(
                            task.getTaskDefName(), UUID.fromString(task.getTaskId())));
        } catch (DriverException e) {
            Monitors.error(CLASS_NAME, "removeTaskFromLimit");
            String errorMsg =
                    String.format(
                            "Error updating taskDefLimit for task - %s:%s in workflow: %s",
                            task.getTaskDefName(), task.getTaskId(), task.getWorkflowInstanceId());
            LOGGER.error(errorMsg, e);
            throw new TransientException(errorMsg, e);
        }
    }
This is a dummy implementation and this feature is not implemented for Cassandra backed
Conductor
cassandra-persistence/src/main/java/com/netflix/conductor/cassandra/dao/CassandraExecutionDAO.java