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/1732#issuecomment-346116095,https://api.github.com/repos/pydata/xarray/issues/1732,346116095,MDEyOklzc3VlQ29tbWVudDM0NjExNjA5NQ==,6815844,2017-11-21T18:21:03Z,2017-11-21T18:48:20Z,MEMBER,"Reproduced also in my environment.

Selected repr of your dataset is
```python
<xarray.Dataset>
Dimensions:                       (N_CALIB: 1, N_HISTORY: 0, N_LEVELS: 1007, N_PARAM: 3, N_PROF: 33)
Dimensions without coordinates: N_CALIB, N_HISTORY, N_LEVELS, N_PARAM, N_PROF
Data variables:
   ...
    SCIENTIFIC_CALIB_DATE         (N_PROF, N_CALIB, N_PARAM) object b'20150514141619' ...
    HISTORY_INSTITUTION           (N_HISTORY, N_PROF) object ...
```
It seems the data variable in concern, such as `ds['HISTORY_STEP']`, is 2-dimensional but one of the dimensions `N_HISTORY` is size 0.

~~Currently, xarray does not handle such zero-length n-dimensional arrays.
Maybe we need to drop such variables when reading?~~

EDIT: This was wrong. xarray should handle 0-size nd-array.

@shoyer, @fmaussion, any idea?

","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,275744315
https://github.com/pydata/xarray/issues/1732#issuecomment-346123261,https://api.github.com/repos/pydata/xarray/issues/1732,346123261,MDEyOklzc3VlQ29tbWVudDM0NjEyMzI2MQ==,6815844,2017-11-21T18:47:06Z,2017-11-21T18:47:06Z,MEMBER,"I tried with xarray v0.9.6 but it raises the same error. 
Maybe also related to #1719 .","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,275744315