Xuanwo commented on issue #4894:
URL: https://github.com/apache/opendal/issues/4894#issuecomment-2227675257
There is a history behind using `stat("/")` and `stat("path/to/dir/")`.
Previously, services like S3 did not support statting a directory; they
would always return `Ok` because object storage services lack a concept of
directories. As a workaround, we treated `/` specially to enable it to return
quickly without going through the entire process.
In newer versions, we've improved how we handle `stat("path/to/dir/")` by
verifying the existence of the path on S3 using `list("path/to/dir/")`.
However, listing operations are expensive (10 times more than `GET`/`HEAD`) and
slow (1/10 as fast as `HEAD`). Therefore, we have kept the logic for
`stat("/")` unchanged.
Perhaps we can relocate the list-stat simulation logic to S3 and allow users
to enable/disable it, ensuring that `stat("/")` is always sent with a real
request.
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