checksum error subjqa dataset
Opened by RensDimmendaal (closed)

## Describe the bug

I get a checksum error when loading the `subjqa` dataset (used in the transformers book).

## Steps to reproduce the bug
```python
from datasets import load_dataset
subjqa = load_dataset("subjqa","electronics")
```

## Expected results
Loading the dataset

## Actual results

```
---------------------------------------------------------------------------

NonMatchingChecksumError                  Traceback (most recent call last)

<ipython-input-2-d2857d460155> in <module>()
      2 from datasets import load_dataset
      3 
----> 4 subjqa = load_dataset("subjqa","electronics")

3 frames

/usr/local/lib/python3.7/dist-packages/datasets/utils/info_utils.py in verify_checksums(expected_checksums, recorded_checksums, verification_name)
     38     if len(bad_urls) > 0:
     39         error_msg = "Checksums didn't match" + for_verification_name + ":\n"
---> 40         raise NonMatchingChecksumError(error_msg + str(bad_urls))
     41     logger.info("All the checksums matched successfully" + for_verification_name)
     42 

NonMatchingChecksumError: Checksums didn't match for dataset source files:
['https://github.com/lewtun/SubjQA/archive/refs/heads/master.zip']
```

## Environment info

Google colab

- `datasets` version: 1.18.2
- Platform: Linux-5.4.144+-x86_64-with-Ubuntu-18.04-bionic
- Python version: 3.7.12
- PyArrow version: 3.0.0

Comments:
Hi @RensDimmendaal, 

I'm sorry but I can't reproduce your bug:
```python
In [1]: from datasets import load_dataset
   ...: ds = load_dataset("subjqa", "electronics")
Downloading builder script: 9.15kB [00:00, 4.10MB/s]                                                                                                                                                       
Downloading metadata: 17.7kB [00:00, 8.51MB/s]                                                                                                                                                             
Downloading and preparing dataset subjqa/electronics (download: 10.86 MiB, generated: 3.01 MiB, post-processed: Unknown size, total: 13.86 MiB) to .../.cache/huggingface/datasets/subjqa/electronics/1.1.0/e5588f9298ff2d70686a00cc377e4bdccf4e32287459e3c6baf2dc5ab57fe7fd...
Downloading data: 11.4MB [00:03, 3.50MB/s]
Dataset subjqa downloaded and prepared to .../.cache/huggingface/datasets/subjqa/electronics/1.1.0/e5588f9298ff2d70686a00cc377e4bdccf4e32287459e3c6baf2dc5ab57fe7fd. Subsequent calls will reuse this data.
100%|███████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████| 3/3 [00:00<00:00, 605.09it/s]

In [2]: ds
Out[2]: 
DatasetDict({
    train: Dataset({
        features: ['domain', 'nn_mod', 'nn_asp', 'query_mod', 'query_asp', 'q_reviews_id', 'question_subj_level', 'ques_subj_score', 'is_ques_subjective', 'review_id', 'id', 'title', 'context', 'question', 'answers'],
        num_rows: 1295
    })
    test: Dataset({
        features: ['domain', 'nn_mod', 'nn_asp', 'query_mod', 'query_asp', 'q_reviews_id', 'question_subj_level', 'ques_subj_score', 'is_ques_subjective', 'review_id', 'id', 'title', 'context', 'question', 'answers'],
        num_rows: 358
    })
    validation: Dataset({
        features: ['domain', 'nn_mod', 'nn_asp', 'query_mod', 'query_asp', 'q_reviews_id', 'question_subj_level', 'ques_subj_score', 'is_ques_subjective', 'review_id', 'id', 'title', 'context', 'question', 'answers'],
        num_rows: 255
    })
})
```

Could you please try again and see if the problem persists?

If that is the case, you can circumvent the issue by passing `ignore_verifications`:
```python
ds = load_dataset("subjqa", "electronics", ignore_verifications=True)

Thanks checking!

You're totally right. I don't know what's changed, but I'm glad it's working now!