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/pull/2639#issuecomment-451271931,https://api.github.com/repos/pydata/xarray/issues/2639,451271931,MDEyOklzc3VlQ29tbWVudDQ1MTI3MTkzMQ==,6815844,2019-01-03T20:46:53Z,2019-01-03T20:46:53Z,MEMBER,"@shoyer 

It looks nice and reasonable to me.

> (This PR) Indexes are recreated from coordinates every time a new DataArray or Dataset is created.

Does it add some overhead (though I don't see any reason of it)?

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