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/3476#issuecomment-1115045538,https://api.github.com/repos/pydata/xarray/issues/3476,1115045538,IC_kwDOAMm_X85Cdj6i,3698640,2022-05-02T15:38:11Z,2022-08-08T15:32:52Z,CONTRIBUTOR,"This has been happening a lot to me lately when writing to zarr. Thanks to @bolliger32 for the tip - this usually works like a charm:

```python
for v in list(ds.coords.keys()):
    if ds.coords[v].dtype == object:
        ds.coords[v] = ds.coords[v].astype(""unicode"")

for v in list(ds.variables.keys()):
    if ds[v].dtype == object:
        ds[v] = ds[v].astype(""unicode"")
```
For whatever reason, clearing the encoding and/or using `.astype(str)` doesn't seem to work as reliably. I don't have a good MRE for this but hope it helps others with the same issue.

note the flag raised by @FlorisCalkoen [below](https://github.com/pydata/xarray/issues/3476#issuecomment-1205346130) - don't just throw this at all your writes! there are other object types (e.g. CFTime) which you probably don't want to convert to string. This is just a patch to get around this issue for dataarrays with string coords/variables.","{""total_count"": 1, ""+1"": 1, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,516306758
https://github.com/pydata/xarray/issues/3476#issuecomment-1208280450,https://api.github.com/repos/pydata/xarray/issues/3476,1208280450,IC_kwDOAMm_X85IBOWC,3698640,2022-08-08T15:30:52Z,2022-08-08T15:31:13Z,CONTRIBUTOR,ha - yeah that's a good flag. I definitely didn't intend for that to be a universally applied patch! so probably should have included a buyer beware. but we did find that clearing the encoding doesn't always do the trick for string arrays. So a comprehensive patch will probably need to be more nuanced.,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,516306758