error downloading bigscience-catalogue-lm-data/lm_en_wiktionary_filtered
Hi @i-am-neo, thanks for reporting.

Normally this dataset should be private and not accessible for public use. @cakiki, @lvwerra, any reason why is it public? I see many other Wikimedia datasets are also public.

Also note that last commit "Add metadata" (https://huggingface.co/datasets/bigscience-catalogue-lm-data/lm_en_wiktionary_filtered/commit/dc2f458dab50e00f35c94efb3cd4009996858609) introduced buggy data files (`data/file-01.jsonl.gz.lock`, `data/file-01.jsonl.gz.lock.lock`). The same bug appears in other datasets as well.

@i-am-neo, please note that in the near future we are planning to make public all datasets used for the BigScience project (at least all of them whose license allows to do that). Once public, they will be accessible for all the NLP community.
## Describe the bug
Error generated when attempting to download dataset

## Steps to reproduce the bug
```python
from datasets import load_dataset

dataset = load_dataset("bigscience-catalogue-lm-data/lm_en_wiktionary_filtered")
```

## Expected results
A clear and concise description of the expected results.

## Actual results
```
ExpectedMoreDownloadedFiles               Traceback (most recent call last)

[<ipython-input-62-4ac5cf959477>](https://localhost:8080/#) in <module>()
      1 from datasets import load_dataset
      2 
----> 3 dataset = load_dataset("bigscience-catalogue-lm-data/lm_en_wiktionary_filtered")

3 frames

[/usr/local/lib/python3.7/dist-packages/datasets/utils/info_utils.py](https://localhost:8080/#) in verify_checksums(expected_checksums, recorded_checksums, verification_name)
     31         return
     32     if len(set(expected_checksums) - set(recorded_checksums)) > 0:
---> 33         raise ExpectedMoreDownloadedFiles(str(set(expected_checksums) - set(recorded_checksums)))
     34     if len(set(recorded_checksums) - set(expected_checksums)) > 0:
     35         raise UnexpectedDownloadedFile(str(set(recorded_checksums) - set(expected_checksums)))

ExpectedMoreDownloadedFiles: {'/home/leandro/catalogue_data/datasets/lm_en_wiktionary_filtered/data/file-01.jsonl.gz', '/home/leandro/catalogue_data/datasets/lm_en_wiktionary_filtered/data/file-01.jsonl.gz.lock'}
```


## Environment info
<!-- You can run the command `datasets-cli env` and copy-and-paste its output below. -->
- `datasets` version: 1.18.3
- Platform: Linux-5.4.188+-x86_64-with-Ubuntu-18.04-bionic
- Python version: 3.7.13
- PyArrow version: 6.0.1

error downloading bigscience-catalogue-lm-data/lm_en_wiktionary_filtered 
 ## Describe the bug
Error generated when attempting to download dataset

## Steps to reproduce the bug
```python
from datasets import load_dataset

dataset = load_dataset("bigscience-catalogue-lm-data/lm_en_wiktionary_filtered")
```

## Expected results
A clear and concise description of the expected results.

## Actual results
```
ExpectedMoreDownloadedFiles               Traceback (most recent call last)

[<ipython-input-62-4ac5cf959477>](https://localhost:8080/#) in <module>()
      1 from datasets import load_dataset
      2 
----> 3 dataset = load_dataset("bigscience-catalogue-lm-data/lm_en_wiktionary_filtered")

3 frames

[/usr/local/lib/python3.7/dist-packages/datasets/utils/info_utils.py](https://localhost:8080/#) in verify_checksums(expected_checksums, recorded_checksums, verification_name)
     31         return
     32     if len(set(expected_checksums) - set(recorded_checksums)) > 0:
---> 33         raise ExpectedMoreDownloadedFiles(str(set(expected_checksums) - set(recorded_checksums)))
     34     if len(set(recorded_checksums) - set(expected_checksums)) > 0:
     35         raise UnexpectedDownloadedFile(str(set(recorded_checksums) - set(expected_checksums)))

ExpectedMoreDownloadedFiles: {'/home/leandro/catalogue_data/datasets/lm_en_wiktionary_filtered/data/file-01.jsonl.gz', '/home/leandro/catalogue_data/datasets/lm_en_wiktionary_filtered/data/file-01.jsonl.gz.lock'}
```


## Environment info
<!-- You can run the command `datasets-cli env` and copy-and-paste its output below. -->
- `datasets` version: 1.18.3
- Platform: Linux-5.4.188+-x86_64-with-Ubuntu-18.04-bionic
- Python version: 3.7.13
- PyArrow version: 6.0.1
 
 Hi @i-am-neo, thanks for reporting.

Normally this dataset should be private and not accessible for public use. @cakiki, @lvwerra, any reason why is it public? I see many other Wikimedia datasets are also public.

Also note that last commit "Add metadata" (https://huggingface.co/datasets/bigscience-catalogue-lm-data/lm_en_wiktionary_filtered/commit/dc2f458dab50e00f35c94efb3cd4009996858609) introduced buggy data files (`data/file-01.jsonl.gz.lock`, `data/file-01.jsonl.gz.lock.lock`). The same bug appears in other datasets as well.

@i-am-neo, please note that in the near future we are planning to make public all datasets used for the BigScience project (at least all of them whose license allows to do that). Once public, they will be accessible for all the NLP community.