issue_comments: 349134458

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https://github.com/pydata/xarray/issues/1759#issuecomment-349134458 https://api.github.com/repos/pydata/xarray/issues/1759 349134458 MDEyOklzc3VlQ29tbWVudDM0OTEzNDQ1OA== 1217238 2017-12-04T22:54:47Z 2017-12-04T22:54:47Z MEMBER

I don't think you're doing anything wrong. This looks like a bug related to @mrocklin's recent addition of dask duck methods for xarray.

Here are the values being passed to xarray.Dataset._dask_postcompute: results = ('mean_agg-aggregate-21a3ca7e382bdeee43ea06bee1ce3feb', 0) info = [(True, <this-array>, (<function Variable._dask_finalize at 0x118156158>, (<function finalize at 0x118350730>, (), ('y',), None, None)))] args = (set(), {'y': 2}, None, None, None)

It seems like something is going wrong on the dask side: results should be the computed numpy array, not an uncomputed dask key.

 
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