html_url,issue_url,id,node_id,user,created_at,updated_at,author_association,body,reactions,performed_via_github_app,issue
https://github.com/pydata/xarray/pull/4823#issuecomment-777706069,https://api.github.com/repos/pydata/xarray/issues/4823,777706069,MDEyOklzc3VlQ29tbWVudDc3NzcwNjA2OQ==,17162724,2021-02-11T18:42:59Z,2021-02-11T18:42:59Z,CONTRIBUTOR,"I think my Q on SO is related to this PR https://stackoverflow.com/questions/66145459/open-mfdataset-on-remote-zarr-store-giving-zarr-errors-groupnotfounderror

Was looking at reading a remote zarr store using `open_mfdataset`

@martindurant suggested putting the single ""file"" (mapping) in a list which works
`ds = xr.open_mfdataset([file], engine=""zarr"")`

but I also wanted to test the other suggestion

`ds = xr.open_mfdataset(uri, engine=""zarr"", backend_kwargs=dict(storage_options={'anon': True}))`

On current xarray master I get
```
Traceback (most recent call last):
  File ""<stdin>"", line 1, in <module>
  File ""/Users/ray.bell/Documents/PYTHON_dev/xarray/xarray/backends/api.py"", line 884, in open_mfdataset
    raise OSError(""no files to open"")
OSError: no files to open
```

On this branch it works
```
git clone https://github.com/martindurant/xarray.git
git checkout fsspec_mk2
conda create -c conda-forge -n xarray-tests python=3.8
conda env update -f ci/requirements/environment.yml
conda activate xarray-tests
pip install -e .
pip install s3fs

import xarray as xr
uri = ""s3://era5-pds/zarr/2020/12/data/eastward_wind_at_10_metres.zarr""
ds = xr.open_mfdataset(uri, engine=""zarr"", backend_kwargs=dict(storage_options={'anon': True}))
```

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