[Bugfix] Fix UVA sampling with lazy feature slicing #3862
Merged
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Fixes #3847 .
@jermainewang I might need your opinion on the behavior addition on lazy feature slicing. Now if a graph is previously in CPU pinned memory and a subgraph (
sample_neighbors
) is taken, the new graph's features will be on GPU. Previously it was on CPU. This further complicates the code inColumn.data
.Need to run a regression test on this.
Also fixes #3861 .