Commits
Sanjiban Sengupta authored and Weston Pace committed 756f2b7249d
ARROW-15994: [C++] Back out taskify changes This PR modifies the `SubmitTask` and `Finish` methods of MapNode in `ExecPlan` to avoid scheduling extra thread tasks. Performed the TPC-H Benchmark developed in PR #12537 with and without the changes. ``` TPC-H Benchmark (With Extra Thread Tasks) ------------------------------------------------------------------- Benchmark Time CPU Iterations ------------------------------------------------------------------- BM_Tpch_Q1/ScaleFactor:1 95035633 ns 178700 ns 100 TPC-H Benchmark (Without Extra Thread Tasks) ------------------------------------------------------------------- Benchmark Time CPU Iterations ------------------------------------------------------------------- BM_Tpch_Q1/ScaleFactor:1 91511754 ns 182060 ns 100 ``` Also, tested with the Query Tester as proposed in PR #12586 ``` With Thread Tasks (batch size = 4096) ./query_tester tpch-1 Average Duration: 0.106694s (+/- 0s) Average Output Rows/S: 37.4902rps Average Output Bytes/S: 4573.81bps Without Thread Tasks (batch size = 4096) ./query_tester tpch-1 Average Duration: 0.104658s (+/- 0s) Average Output Rows/S: 38.2198rps Average Output Bytes/S: 4662.82bps ``` Closes #12720 from sanjibansg/thread_tasks Authored-by: Sanjiban Sengupta <sanjiban.sg@gmail.com> Signed-off-by: Weston Pace <weston.pace@gmail.com>