issue_comments: 390101785

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https://github.com/pydata/xarray/issues/2153#issuecomment-390101785 https://api.github.com/repos/pydata/xarray/issues/2153 390101785 MDEyOklzc3VlQ29tbWVudDM5MDEwMTc4NQ== 1217238 2018-05-18T05:51:30Z 2018-05-18T05:51:30Z MEMBER

Thanks for the report -- this is pretty bad!

It appears to be triggered by any reductions (including mean(), etc.) on a DataArray groupby object, if the dimension coordinate includes duplicate entries.

 
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