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/issues/4240#issuecomment-774774033,https://api.github.com/repos/pydata/xarray/issues/4240,774774033,MDEyOklzc3VlQ29tbWVudDc3NDc3NDAzMw==,1217238,2021-02-07T21:48:38Z,2021-02-07T21:48:38Z,MEMBER,I have a tentative fix for this in https://github.com/pydata/xarray/pull/4879. It would be great if someone could give this a try to verify that it resolve the issue.,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,662505658
https://github.com/pydata/xarray/issues/4240#issuecomment-663794065,https://api.github.com/repos/pydata/xarray/issues/4240,663794065,MDEyOklzc3VlQ29tbWVudDY2Mzc5NDA2NQ==,1217238,2020-07-25T02:05:18Z,2020-07-25T02:05:18Z,MEMBER,"Probably the easiest work around is to call `.close()` on the original dataset. Failing that, the file is cached in `xarray.backends.file_manager.FILE_CACHE`, which you could muck around with.

I believe it only gets activated by `repr()` because array values from netCDF file are loaded lazily. Not 100% without more testing, though.","{""total_count"": 1, ""+1"": 1, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,662505658
https://github.com/pydata/xarray/issues/4240#issuecomment-663790991,https://api.github.com/repos/pydata/xarray/issues/4240,663790991,MDEyOklzc3VlQ29tbWVudDY2Mzc5MDk5MQ==,1217238,2020-07-25T01:33:36Z,2020-07-25T01:33:36Z,MEMBER,"Thanks for the clear example!

This happens dues to xarray's caching logic for files: 
https://github.com/pydata/xarray/blob/b1c7e315e8a18e86c5751a0aa9024d41a42ca5e8/xarray/backends/file_manager.py#L50-L76

This means that when you open the same filename, xarray doesn't actually reopen the file from disk -- instead it points to the same file object already cached in memory.

I can see why this could be confusing. We do need this caching logic for files opened from the same `backends.*DataStore` class, but this could include some sort of unique identifier (i.e., from `uuid`) to ensure each separate call to `xr.open_dataset` results in a separately cached/opened file object: 
https://github.com/pydata/xarray/blob/b1c7e315e8a18e86c5751a0aa9024d41a42ca5e8/xarray/backends/netCDF4_.py#L355-L357","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,662505658