Github user AnthonyTruchet closed the pull request at:
https://github.com/apache/spark/pull/16038
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GitHub user AnthonyTruchet opened a pull request:
https://github.com/apache/spark/pull/16038
[SPARK-18471][CORE] New treeAggregate overload for big large aggregators
## What changes were proposed in this pull request?
The zero for the aggregation used to be shipped into a
