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/1379#issuecomment-296111630,https://api.github.com/repos/pydata/xarray/issues/1379,296111630,MDEyOklzc3VlQ29tbWVudDI5NjExMTYzMA==,1217238,2017-04-21T07:42:45Z,2017-04-21T07:42:45Z,MEMBER,"Alignment and broadcasting means that `xarray.concat` is inherently going to be slower than `np.concatenate`. But little effort has gone into optimizing it, so it is quite likely that performance could be improved with some effort.

My guess is that some combination of automatic alignment and/or broadcasting in `concat` is causing the issue with exploding memory usage here. See https://github.com/pydata/xarray/issues/1354 for related discussion -- contributions would certainly be welcome here.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,223231729