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/2438#issuecomment-424432532,https://api.github.com/repos/pydata/xarray/issues/2438,424432532,MDEyOklzc3VlQ29tbWVudDQyNDQzMjUzMg==,1217238,2018-09-25T17:31:13Z,2018-09-25T17:31:13Z,MEMBER,"> This is however horribly slow for larger arrays.

The existing (1 variable) groupby code actually basically does this same loop. We could potentially speed things up by leveraging a tool like [numbagg](https://github.com/shoyer/numbagg/blob/master/numbagg/test/test_grouped.py) but nobody has gotten around to that yet.","{""total_count"": 2, ""+1"": 1, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 1}",,363629186