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/1955#issuecomment-370043879,https://api.github.com/repos/pydata/xarray/issues/1955,370043879,MDEyOklzc3VlQ29tbWVudDM3MDA0Mzg3OQ==,1197350,2018-03-02T20:31:11Z,2018-03-02T20:31:11Z,MEMBER,"Thanks @jhamman. Ok, not related to #1954","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,301891754
https://github.com/pydata/xarray/issues/1955#issuecomment-370043602,https://api.github.com/repos/pydata/xarray/issues/1955,370043602,MDEyOklzc3VlQ29tbWVudDM3MDA0MzYwMg==,2443309,2018-03-02T20:30:12Z,2018-03-02T20:30:12Z,MEMBER,@rabernat - see comment here: https://github.com/pydata/xarray/pull/1793/files#r171290124,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,301891754
https://github.com/pydata/xarray/issues/1955#issuecomment-370043432,https://api.github.com/repos/pydata/xarray/issues/1955,370043432,MDEyOklzc3VlQ29tbWVudDM3MDA0MzQzMg==,1197350,2018-03-02T20:29:34Z,2018-03-02T20:29:34Z,MEMBER,"The failure is
```
 ZarrDictStoreTest.test_explicitly_omit_fill_value_in_coord_via_encoding_kwarg _
self = <xarray.tests.test_backends.ZarrDictStoreTest testMethod=test_explicitly_omit_fill_value_in_coord_via_encoding_kwarg>
    def test_explicitly_omit_fill_value_in_coord_via_encoding_kwarg(self):
        ds = Dataset({'x': ('y', [np.pi, -np.pi])}, coords={'y': [0.0, 1.0]})
        kwargs = dict(encoding={'y': {'_FillValue': None}})
>       with self.roundtrip(ds, save_kwargs=kwargs) as actual:
xarray/tests/test_backends.py:721: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
../../../miniconda/envs/test_env/lib/python3.6/contextlib.py:81: in __enter__
    return next(self.gen)
xarray/tests/test_backends.py:1152: in roundtrip
    self.save(data, store_target, **save_kwargs)
xarray/tests/test_backends.py:1141: in save
    dataset.to_zarr(store=store_target, **kwargs)
xarray/core/dataset.py:1161: in to_zarr
    group=group, encoding=encoding)
xarray/backends/api.py:752: in to_zarr
    dataset.dump_to_store(store, sync=True, encoding=encoding)
xarray/core/dataset.py:1064: in dump_to_store
    unlimited_dims=unlimited_dims)
xarray/backends/zarr.py:377: in store
    *args, **kwargs)
xarray/backends/common.py:280: in store
    unlimited_dims=unlimited_dims)
xarray/backends/common.py:317: in set_variables
    name, v, check, unlimited_dims=unlimited_dims)
xarray/backends/zarr.py:361: in prepare_variable
    variable, raise_on_invalid=check_encoding)
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
variable = <xarray.Variable (y: 2)>
array([0., 1.]), raise_on_invalid = True
    def _extract_zarr_variable_encoding(variable, raise_on_invalid=False):
        encoding = variable.encoding.copy()
    
        valid_encodings = set(['chunks', 'compressor', 'filters',
                               'cache_metadata'])
    
        if raise_on_invalid:
            invalid = [k for k in encoding if k not in valid_encodings]
            if invalid:
                raise ValueError('unexpected encoding parameters for zarr '
>                                'backend:  %r' % invalid)
E               ValueError: unexpected encoding parameters for zarr backend:  ['_FillValue']
```","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,301891754