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/2647#issuecomment-451746014,https://api.github.com/repos/pydata/xarray/issues/2647,451746014,MDEyOklzc3VlQ29tbWVudDQ1MTc0NjAxNA==,35968931,2019-01-06T14:32:08Z,2019-01-06T14:32:08Z,MEMBER,"I just wanted to clarify that `concat_dim=None` very much does mean something special, it means ""don't use `concat` on these datasets at all, just use `merge`"". This is documented under the `concat_dim` argument description of the docs for `auto_combine` [here](http://xarray.pydata.org/en/stable/generated/xarray.auto_combine.html#xarray.auto_combine). 

Also @WeatherGod I think this bug was introduced by me in #2553, but should be checked again once #2616 is finished, because the API will change.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,395994055