ZhangHuiGui

GH-41720: [C++][Acero] Remove an useless parameter for QueryContext::Init called in hash_join_benchmark

8

### Rationale for this change My local compilation parameters will include the compilation of some basic benchmarks. I discovered this compilation problem today. It seems that #41334 of `QueryContext::Init` is...

### Describe the bug, including details regarding any error messages, version, and platform. My local compilation parameters will include the compilation of some basic benchmarks (with `ARROW_BUILD_OPENMP_BENCHMARKS=ON`). I discovered this...

### Describe the bug, including details regarding any error messages, version, and platform. Bug found from blew comment: https://github.com/apache/arrow/pull/41036#discussion_r1564538418 It's bug in grouper when set are_cols_in_encoding_order=false in below codes: https://github.com/apache/arrow/blob/2979d69a05cb16012da06baaa801a1849e9110ce/cpp/src/arrow/compute/row/grouper.cc#L582...

GH-41035: [C++] Add a grouper benchmark for preventing performance regression

15

### Rationale for this change Add a grouper benchmark for preventing performance regression . https://github.com/apache/arrow/pull/40998#issuecomment-2039204161. ### What changes are included in this PR? Added a benchmark. ### Are these changes...

[C++][Compute] A latent bug may caused by validity-buffer pre-allocation in ScalarExecutor with NullHandling::INTERSECTION

9

### Describe the bug, including details regarding any error messages, version, and platform. For now, the validity-buffer for output-data may not be preallocated with `NullHandling::INTERSECTION` according the input-data's `NullGeneration`. https://github.com/apache/arrow/blob/fecd207e5dd553d226046f9d7bc5cd1a05529781/cpp/src/arrow/compute/exec.cc#L943-L951...

Refactor some codes for better readable.