issue_comments: 358847017

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https://github.com/pydata/xarray/issues/1838#issuecomment-358847017 https://api.github.com/repos/pydata/xarray/issues/1838 358847017 MDEyOklzc3VlQ29tbWVudDM1ODg0NzAxNw== 6815844 2018-01-19T02:21:39Z 2018-01-19T02:22:06Z MEMBER

I notice here

https://github.com/pydata/xarray/blob/f3deb2f2495220af819021b199a5305b0d62ef36/xarray/core/duck_array_ops.py#L177-L181

we removed dtype arguments from reduce methods, but I'm not sure why. This might be a bug.

As a temporal solution, python da.reduce(np.sum, dtype="i4") preserves dtype.

 
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