[gpuCI] Forward-merge branch-22.10 to branch-22.12 [skip gpuci] #11810
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This PR corresponds to the `dask_cudf` version of dask/dask#9302 (adding a shuffle-based algorithm for high-cardinality groupby aggregations). The benefits of this algorithm are most significant for cases where `split_out>1` is necessary: ```python agg = ddf.groupby("id").agg({"x": "mean", "y": "max"}, split_out=4, shuffle=True) ``` **NOTES**: - ~`shuffle="explicit-comms"` is also supported (when `dask_cuda` is installed)~ - It should be possible to refactor remove some of this code in the future. However, due to some subtle differences between the groupby code in `dask.dataframe` and `dask_cudf`, the specialized `_shuffle_aggregate` is currently necessary. Authors: - Richard (Rick) Zamora (https://github.com/rjzamora) Approvers: - Benjamin Zaitlen (https://github.com/quasiben) - Lawrence Mitchell (https://github.com/wence-) URL: #11800
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SUCCESS - forward-merge complete. |
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Forward-merge triggered by push to
branch-22.10that creates a PR to keepbranch-22.12up-to-date. If this PR is unable to be immediately merged due to conflicts, it will remain open for the team to manually merge.