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/7045#issuecomment-1249580349,https://api.github.com/repos/pydata/xarray/issues/7045,1249580349,IC_kwDOAMm_X85KexU9,2448579,2022-09-16T16:51:55Z,2022-09-16T16:51:55Z,MEMBER,"I think I agree here but a lot of things are going to break.

IMO we could first align (hah) these choices to be the same:
> the exact mode of automatic alignment (outer vs inner vs left join) depends on the specific operation. 

so that they're all controlled by `OPTIONS[""arithmetic_join""]` (rename to `""default_join""`?) and then change the default after a long period of warnings.


> Automatic alignment is not useful for float indexes, because exact matches are rare. In practice, this makes it less useful in Xarray's usual domains than it for pandas.

What do you think of making the default FloatIndex use a reasonable (hard to define!) `rtol` for comparisons?","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,1376109308