default TableFunctionDataProcessor getDataProcessor() {
    throw new UnsupportedOperationException("this table function does not process input data");
  }
This method returns a {@linkplain TableFunctionDataProcessor}. All the necessary information
collected during analysis is available in the implementation of TableFunctionProcessorProvider.
It is called once per each partition processed by the table function.
iotdb-api/udf-api/src/main/java/org/apache/iotdb/udf/api/relational/table/TableFunctionProcessorProvider.java