[object_store] when Create a AmazonS3 instance work with MinIO without set endpoint got error MissingRegion

[jiangzhx]

Which part is this question about

library api

Describe your question

When I tested creating an AmazonS3 instance to work with MinIO, it appeared that providing the region endpoint may be unnecessary.
In fact, both .
with_region("") and .with_region(" ")
worked equally well.

maybe we can set a default value for with_region or add a example for work with minIO

Additional context

[tustvold]

See #3827 (comment)

The region is technically required for request signing, although it would appear some stores don't care what it is set to. I'm not sure if there is a general recommendation for what minio says it should be set to?

[jiangzhx]

Thank you for your response. Perhaps I could add an example to introduce how to use MinIO in the object_store.

i will close this issue.