Jonathan Keane created ARROW-13997:
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Summary: [C++] restore exec node based query performance
Key: ARROW-13997
URL: https://issues.apache.org/jira/browse/ARROW-13997
Project: Apache Arrow
Issue Type: Bug
Components: C++
Affects Versions: 6.0.0
Reporter: Jonathan Keane
The R bindings transitioned to using exec nodes for all queries. Since
ARROW-13740 was merged, the performance for our queries has been slower.
ARROW-13940 corrected the accidental disabling of multi threading, which
recovered some if the performance, but not all of it.
The three benchmarks showing the degradation:
https://conbench.ursa.dev/benchmarks/c6d37c1517af405dbb8ebad83eec010c/
https://conbench.ursa.dev/benchmarks/cec58c9c21234ffbb1bab28b7fe409ef/
https://conbench.ursa.dev/benchmarks/99c04f5ef2fe4caf868904699c2f377c/
For 2 of the three, there was a large increase when ARROW-13740 was merged and
plateau, and then a smaller step down when ARROW-13940 was merged, but we still
haven't reverted to the pre-change mean.
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