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/4077#issuecomment-633651638,https://api.github.com/repos/pydata/xarray/issues/4077,633651638,MDEyOklzc3VlQ29tbWVudDYzMzY1MTYzOA==,22245117,2020-05-25T16:54:55Z,2020-05-25T17:49:03Z,CONTRIBUTOR,"Yup, happy to do it.

Just one doubt. I think in cases where `indexes[i][-1] == indexes[i+1][0]`, the concatenation should be consistent with the `compat` argument used for `merge` (not sure if you guys agree on this). I don't know the backend though, so the easiest thing I can think about is to run `merge` to trigger the exact same checks:
```python
xr.merge([datasets[i].isel(dim=-1), datasets[i+1].isel(dim=0)], compat=compat)
```","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,620514214
https://github.com/pydata/xarray/issues/4077#issuecomment-633586248,https://api.github.com/repos/pydata/xarray/issues/4077,633586248,MDEyOklzc3VlQ29tbWVudDYzMzU4NjI0OA==,22245117,2020-05-25T13:59:18Z,2020-05-25T13:59:18Z,CONTRIBUTOR,"Nevermind, it looks like if the check goes into `_infer_concat_order_from_coords` it won't affect `combine_nested`. So `indexes[i][-1] <= indexes[i+1][0]` should work.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,620514214
https://github.com/pydata/xarray/issues/4077#issuecomment-633577882,https://api.github.com/repos/pydata/xarray/issues/4077,633577882,MDEyOklzc3VlQ29tbWVudDYzMzU3Nzg4Mg==,22245117,2020-05-25T13:39:37Z,2020-05-25T13:39:37Z,CONTRIBUTOR,"If `indexes[i] = [1, 5]` and `indexes[i+1] = [2, 3, 4]`, wouldn't `indexes[i][-1] <= indexes[i+1][0]` raise an error even if all indexes are different?

What about something like this? I think it would cover all possibilities, but maybe it is too expensive?
```python
if not indexes[0].append(indexes[1:]).is_unique:
    raise ValueError
```","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,620514214
https://github.com/pydata/xarray/issues/4077#issuecomment-630692045,https://api.github.com/repos/pydata/xarray/issues/4077,630692045,MDEyOklzc3VlQ29tbWVudDYzMDY5MjA0NQ==,22245117,2020-05-19T09:08:59Z,2020-05-19T09:08:59Z,CONTRIBUTOR,"Got it, Thanks!
Let me know if it is worth adding some checks. I'd be happy to work on it.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,620514214