issue_comments: 571639956

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https://github.com/pydata/xarray/issues/3666#issuecomment-571639956 https://api.github.com/repos/pydata/xarray/issues/3666 571639956 MDEyOklzc3VlQ29tbWVudDU3MTYzOTk1Ng== 14808389 2020-01-07T15:38:57Z 2020-01-07T15:38:57Z MEMBER

I can reproduce this error with your files: python In [18]: files = glob.glob("*.nc") ...: datasets = [xr.open_dataset(file) for file in files] ...: xr.concat(datasets, dim="new_dim") RecursionError but sorting the files before concatenating results in a different error: python In [19]: files = glob.glob("*.nc") ...: datasets = [xr.open_dataset(file) for file in sorted(files)] ...: xr.concat(datasets, dim="new_dim") TypeError: cannot compare cftime.DatetimeNoLeap(1950-01-01 00:00:00) and Timestamp('1950-01-01 00:00:00') (different calendars) which might mean that there is a problem with the data.

Regardless, we might want to make sure the recursion does not happen.

 
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