William Roberts

Opening fsspec s3 file twice results in invalid start byte

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### What happened? When I open an fsspec s3 file twice, it results in an error, "file-like object read/write pointer not at the start of the file". Here's a Dockerfile...

Xarray does not like reading the same file twice from fsspec. See https://github.com/pydata/xarray/issues/6813 The following currently fails: ``` import fsspec import datatree as dt fs = fsspec.filesystem('s3', anon=True) fp =...