issue_comments: 521503585

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https://github.com/pydata/xarray/issues/3215#issuecomment-521503585 https://api.github.com/repos/pydata/xarray/issues/3215 521503585 MDEyOklzc3VlQ29tbWVudDUyMTUwMzU4NQ== 1217238 2019-08-15T03:50:00Z 2019-08-15T03:50:00Z MEMBER

I still don't understand the different code paths between decode_cf=True and decode_cf=False + explicit call to xarray.decode_cf()

In the first case, CF conventions decoding is done on xarray's internal lazy BackendArray objects.

In the second case, CF conventions decoding is done on dask arrays. There are a few cases where this can be slower / require loading more data to look at a small slice of array data.

 
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