issues: 292633789

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id node_id number title user state locked assignee milestone comments created_at updated_at closed_at author_association active_lock_reason draft pull_request body reactions performed_via_github_app state_reason repo type
292633789 MDU6SXNzdWUyOTI2MzM3ODk= 1866 aggregation ops for object-dtype are missing 6815844 closed 0     0 2018-01-30T02:40:27Z 2018-02-15T22:03:01Z 2018-02-15T22:03:01Z MEMBER      

This issue arises in #1837 comment, where we need to make a summation of object-dtype array, such as python xr.DataArray(np.array([True, True, False, np.nan], dtype=object), dims='x').sum('x', skipna=True) Currently, it raises NotImplementedError.

pandas support this by having their own nan-aggregation methods.

 
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