Issue: load_dataset("amazon_polarity") NonMatchingChecksumError

Comment:
Same issue today with "big_patent", though the symptoms are slightly different.

When running

```py
from datasets import load_dataset
load_dataset("big_patent", split="validation")
```

I get the following
`FileNotFoundError: Local file \huggingface\datasets\downloads\6159313604f4f2c01e7d1cac52139343b6c07f73f6de348d09be6213478455c5\bigPatentData\train.tar.gz doesn't exist`

I had to look into `6159313604f4f2c01e7d1cac52139343b6c07f73f6de348d09be6213478455c5`  (which is a file instead of a folder) and got the following:

`<!DOCTYPE html><html><head><title>Google Drive - Quota exceeded</title><meta http-equiv="content-type" content="text/html; charset=utf-8"/><link href=&#47;static&#47;doclist&#47;client&#47;css&#47;4033072956&#45;untrustedcontent.css rel="stylesheet" nonce="JV0t61Smks2TEKdFCGAUFA"><link rel="icon" href="//ssl.gstatic.com/images/branding/product/1x/drive_2020q4_32dp.png"/><style nonce="JV0t61Smks2TEKdFCGAUFA">#gbar,#guser{font-size:13px;padding-top:0px !important;}#gbar{height:22px}#guser{padding-bottom:7px !important;text-align:right}.gbh,.gbd{border-top:1px solid #c9d7f1;font-size:1px}.gbh{height:0;position:absolute;top:24px;width:100%}@media all{.gb1{height:22px;margin-right:.5em;vertical-align:top}#gbar{float:left}}a.gb1,a.gb4{text-decoration:underline !important}a.gb1,a.gb4{color:#00c !important}.gbi .gb4{color:#dd8e27 !important}.gbf .gb4{color:#900 !important}
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