issue_comments: 398152064

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https://github.com/pydata/xarray/issues/2237#issuecomment-398152064 https://api.github.com/repos/pydata/xarray/issues/2237 398152064 MDEyOklzc3VlQ29tbWVudDM5ODE1MjA2NA== 1197350 2018-06-18T18:32:42Z 2018-06-18T18:32:42Z MEMBER

I agree that single value chunks illustrates the problem more clearly. I think this example is most clean if you do it like this python import xarray as xr import dask.array as dsa ds = xr.Dataset({'foo': (['x'], dsa.ones(4, chunks=1))}, coords={'x': (['x'], [0, 1, 2, 3]), 'bar': (['x'], ['a', 'a', 'b', 'b']), 'baz': (['x'], ['a', 'b', 'a', 'b'])})

ds.foo.groupby('bar').apply(lambda x: x).data.visualize():

ds.foo.groupby('baz').apply(lambda x: x).data.visualize() 

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