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  • Variable.stack constructs extremely large chunks · 4 ✖

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id html_url issue_url node_id user created_at updated_at ▲ author_association body reactions performed_via_github_app issue
1479711087 https://github.com/pydata/xarray/issues/5754#issuecomment-1479711087 https://api.github.com/repos/pydata/xarray/issues/5754 IC_kwDOAMm_X85YMplv dcherian 2448579 2023-03-22T14:51:42Z 2023-03-22T14:51:42Z MEMBER

This is fine. That warning says they're fixing the issue reported here.

 
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   Variable.stack constructs extremely large chunks 984555353
1479626289 https://github.com/pydata/xarray/issues/5754#issuecomment-1479626289 https://api.github.com/repos/pydata/xarray/issues/5754 IC_kwDOAMm_X85YMU4x dcherian 2448579 2023-03-22T14:04:40Z 2023-03-22T14:04:40Z MEMBER

It was fixed in dask, but we're still sub-optimal.

Do you have an example of a problem? Please open a new issue with a reproducible example if you do.

 
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   Variable.stack constructs extremely large chunks 984555353
993814525 https://github.com/pydata/xarray/issues/5754#issuecomment-993814525 https://api.github.com/repos/pydata/xarray/issues/5754 IC_kwDOAMm_X847PGf9 dcherian 2448579 2021-12-14T17:31:45Z 2021-12-14T17:31:45Z MEMBER

Fixed upstream

 
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   Variable.stack constructs extremely large chunks 984555353
909841259 https://github.com/pydata/xarray/issues/5754#issuecomment-909841259 https://api.github.com/repos/pydata/xarray/issues/5754 IC_kwDOAMm_X842OxNr dcherian 2448579 2021-09-01T03:20:15Z 2021-09-01T03:22:43Z MEMBER

Ah this is https://github.com/dask/dask/issues/5544 again. It looks like dask needs to break up the potentially-very-large intermediate chunks.

That said our strategy of transposing first means that the optimization implemented in https://github.com/dask/dask/issues/5544#issuecomment-712280433 doesn't kick in in this case.

 
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   Variable.stack constructs extremely large chunks 984555353

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