Github user hhbyyh commented on the issue:
https://github.com/apache/spark/pull/17000
Hi @ZunwenYou Do you know what's the reason that treeAggregate failed when
feature dimension reach 20 million?
I think this potentially can help with the 2G disk shuffle spill limit. (to
be verified).
Also we should evaluate the memory consumption due to the slice and copy.
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