issue_comments: 845604377

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https://github.com/pydata/xarray/issues/5290#issuecomment-845604377 https://api.github.com/repos/pydata/xarray/issues/5290 845604377 MDEyOklzc3VlQ29tbWVudDg0NTYwNDM3Nw== 1217238 2021-05-21T02:22:15Z 2021-05-21T02:22:15Z MEMBER

The (potentially very large) coordinate still needs to fit in memory though... either when creating the dummy zarr store (which could be done differently) or when opening it. Is that correct?

This is correct

That wont work for my use case when the coordinate is very large. Do you know an alternative? Would it help if I store the coordinate with a non-dimension name?

Yes, this would work.

We do probably want to change this behavior in the future as part of the changes related to https://github.com/pydata/xarray/issues/1603, e.g., to support out of core indexing. See also https://github.com/pydata/xarray/blob/master/design_notes/flexible_indexes_notes.md

 
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