issue_comments: 545197414

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https://github.com/pydata/xarray/issues/3432#issuecomment-545197414 https://api.github.com/repos/pydata/xarray/issues/3432 545197414 MDEyOklzc3VlQ29tbWVudDU0NTE5NzQxNA== 1217238 2019-10-22T23:24:45Z 2019-10-22T23:24:45Z MEMBER

I think the right long-term solution for xarray is to always store separate Variable objects for MultiIndex levels, and only use the MultiIndex for proper indexing. When you index out a single value, the MultiIndex will naturally disappear and you'll be left with a bunch of scalar coordinates, without any special case logic to handle the MultiIndex.

This looks like @crusaderky's third option.

We'll need to finish up the big "explicit indexes" refactor first to make this viable.

 
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