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from 5ca62b9 MINOR: [R] Fix style warnings
add 5e73313 ARROW-13737: [C++] Support for grouped aggregation over
scalar columns
No new revisions were added by this update.
Summary of changes:
cpp/src/arrow/compute/kernels/hash_aggregate.cc | 359 +++++++++++----------
.../arrow/compute/kernels/hash_aggregate_test.cc | 301 ++++++++++++++---
2 files changed, 453 insertions(+), 207 deletions(-)