issue_comments: 630721808

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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/issues/4077#issuecomment-630721808 https://api.github.com/repos/pydata/xarray/issues/4077 630721808 MDEyOklzc3VlQ29tbWVudDYzMDcyMTgwOA== 10194086 2020-05-19T10:06:10Z 2020-05-19T10:06:10Z MEMBER

The second part could probably be tested just below this if:

https://github.com/pydata/xarray/blob/2542a63f6ebed1a464af7fc74b9f3bf302925803/xarray/core/combine.py#L751

using

python if not indexes.is_unique: raise ValueError("") (or a warning)

 
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