完整报错
Traceback (most recent call last):File "/Users//1.py", line 851, in <module>ds1 = my_datastream.key_by(lambda x: x[0]).process(MyProcessFunction()) # 返回元组即: f0 f1 f2 三列File "/Users/thomas990p/bigdataSoft/minicondaarm/miniconda3/envs/py39/lib/python3.9/site-packages/pyflink/datastream/data_stream.py", line 1634, in process_get_one_input_stream_operator(File "/Users/thomas990p/bigdataSoft/minicondaarm/miniconda3/envs/py39/lib/python3.9/site-packages/pyflink/datastream/data_stream.py", line 2782, in _get_one_input_stream_operatorj_data_stream_python_function_info = _create_j_data_stream_python_function_info(func, func_type)File "/Users/thomas990p/bigdataSoft/minicondaarm/miniconda3/envs/py39/lib/python3.9/site-packages/pyflink/datastream/data_stream.py", line 2899, in _create_j_data_stream_python_function_infoserialized_func = cloudpickle.dumps(func)File "/Users/thomas990p/b
