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/2514#issuecomment-433528586,https://api.github.com/repos/pydata/xarray/issues/2514,433528586,MDEyOklzc3VlQ29tbWVudDQzMzUyODU4Ng==,6815844,2018-10-26T20:08:33Z,2018-10-27T20:50:47Z,MEMBER,"Nice catch!

For some historical reasons, `mean` and some reduction method uses bottleneck as default, while `count` does not.

`mean` goes through this function
https://github.com/pydata/xarray/blob/b622c5e7da928524ef949d9e389f6c7f38644494/xarray/core/dask_array_ops.py#L23

It looks there is another but for this function.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,374279704
https://github.com/pydata/xarray/issues/2514#issuecomment-433353091,https://api.github.com/repos/pydata/xarray/issues/2514,433353091,MDEyOklzc3VlQ29tbWVudDQzMzM1MzA5MQ==,6815844,2018-10-26T09:49:04Z,2018-10-26T09:49:04Z,MEMBER,"Thanks, @cchwala, for reporting the issue.

It looks that the actual chunks size is ((10, 735), ) not all 10.
```python
In [16]: ds_test.interpolate_na(dim='time', limit=20)['foo'].chunks
Out[16]: ((10, 735),)
```
(why does our `__repr__` only show the first chunk size?)
But it should be ((745, ), ) as you suggested.

The problem would be in
https://github.com/pydata/xarray/blob/5940100761478604080523ebb1291ecff90e779e/xarray/core/dask_array_ops.py#L74-L85

This method is desinged to be used for multiplly chunked array, so I didn't care to add a small chunk on the head.
Do you mind to look the inside?","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,374279704