@Override
    public List<WorkflowModel> getPendingWorkflowsByType(String workflowName, int version) {
        throw new UnsupportedOperationException(
                "This method is not implemented in CassandraExecutionDAO. Please use ExecutionDAOFacade instead.");
    }
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