stop at load tokenizer_config.json when run barthez for mrpc 
run code
```shell
python examples/text-classification/run_glue_tune.py --model_name_or_path /home2/zhenggo1/checkpoint/barthez_mrpc --task_name $TASK_NAME --do_eval --tune --max_seq_length 512 --output_dir /home2/zhenggo1/checkpoint/barthez_mrpc --tuned_checkpoint="/home2/zhenggo1/checkpoint/barthez_mrpc"
```
stop at here
```shell
[INFO|tokenization_utils_base.py:1618] 2021-05-13 10:11:25,859 >> Model name '/home2/zhenggo1/checkpoint/barthez_mrpc' not found in model shortcut name list (moussaKam/mbarthez, moussaKam/barthez, moussaKam/barthez-orangesum-title). Assuming '/home2/zhenggo1/checkpoint/barthez_mrpc' is a path, a model identifier, or url to a directory containing tokenizer files.
[INFO|tokenization_utils_base.py:1651] 2021-05-13 10:11:25,860 >> Didn't find file /home2/zhenggo1/checkpoint/barthez_mrpc/tokenizer.json. We won't load it.
[INFO|tokenization_utils_base.py:1651] 2021-05-13 10:11:25,860 >> Didn't find file /home2/zhenggo1/checkpoint/barthez_mrpc/added_tokens.json. We won't load it.
[INFO|tokenization_utils_base.py:1714] 2021-05-13 10:11:25,860 >> loading file /home2/zhenggo1/checkpoint/barthez_mrpc/sentencepiece.bpe.model
[INFO|tokenization_utils_base.py:1714] 2021-05-13 10:11:25,860 >> loading file None
[INFO|tokenization_utils_base.py:1714] 2021-05-13 10:11:25,860 >> loading file None
[INFO|tokenization_utils_base.py:1714] 2021-05-13 10:11:25,860 >> loading file /home2/zhenggo1/checkpoint/barthez_mrpc/special_tokens_map.json
[INFO|tokenization_utils_base.py:1714] 2021-05-13 10:11:25,860 >> loading file /home2/zhenggo1/checkpoint/barthez_mrpc/tokenizer_config.json
```
No problem.It is just loading too long as 9 minute.