issue_comments: 1450432902

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https://github.com/pydata/xarray/issues/7560#issuecomment-1450432902 https://api.github.com/repos/pydata/xarray/issues/7560 1450432902 IC_kwDOAMm_X85Wc9mG 2448579 2023-03-01T16:23:05Z 2023-03-01T16:23:27Z MEMBER

This is another case of bad defaults I think; the default is compat="no_conflicts" which for datasets with the same variables picks the first non-NaN value after first aligning them along all dimensions (with fill_value=np.nan thereby changing dtypes). This is a major increase in memory use, totally inefficient, and because it works, prevents the user from discovering concat.

 
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