issue_comments: 998948715

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https://github.com/pydata/xarray/issues/4738#issuecomment-998948715 https://api.github.com/repos/pydata/xarray/issues/4738 998948715 IC_kwDOAMm_X847ir9r 13301940 2021-12-21T17:06:51Z 2021-12-21T17:11:47Z MEMBER

The issue appears to be caused by the coordinates which are used in dask_tokenize

I tried running the reproducer above and things seem to be working fine. I can't for the life of me understand why I got non-deterministic behavior four hours ago :(

```python In [1]: import dask, xarray as xr

In [2]: ds = xr.tutorial.open_dataset('rasm')

In [3]: dask.base.tokenize(ds) == dask.base.tokenize(ds) Out[3]: True

In [4]: dask.base.tokenize(ds.Tair._coords) == dask.base.tokenize(ds.Tair._coords) Out[4]: True ```

```python In [5]: xr.show_versions()

INSTALLED VERSIONS

commit: None python: 3.9.7 | packaged by conda-forge | (default, Sep 29 2021, 20:33:18) [Clang 11.1.0 ] python-bits: 64 OS: Darwin OS-release: 20.6.0 machine: x86_64 processor: i386 byteorder: little LC_ALL: None LANG: en_US.UTF-8 LOCALE: ('en_US', 'UTF-8') libhdf5: 1.12.1 libnetcdf: 4.8.1

xarray: 0.20.1 pandas: 1.3.4 numpy: 1.20.3 scipy: 1.7.3 netCDF4: 1.5.8 pydap: None h5netcdf: 0.11.0 h5py: 3.6.0 Nio: None zarr: 2.10.3 cftime: 1.5.1.1 nc_time_axis: None PseudoNetCDF: None rasterio: None cfgrib: None iris: None bottleneck: None dask: 2021.11.2 distributed: 2021.11.2 matplotlib: 3.5.0 cartopy: None seaborn: None numbagg: None fsspec: 2021.11.1 cupy: None pint: 0.18 sparse: None setuptools: 59.4.0 pip: 21.3.1 conda: None pytest: None IPython: 7.30.0 sphinx: 4.3.1 ```

 
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