[joseph-isaacs]

Third of a stack of three that lands the planner-driven V2 scan for DataFusion behind a switch, cut from #10694. Stacked on #10707 (the planner chain), itself on #10706. With this merged, scan_v2 runs TPC-H end to end; the perf and diagnostics commits of #10694 follow as separate PRs on top.

[codspeed]

Merging this PR will regress 1 benchmark

2 warnings, 1 note

⚠️ Walltime results may be unreliable

Some benchmarks used the Walltime instrument outside CodSpeed Macro Runners, which can make the results inconsistent.

Learn more about Macro Runners

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⚠️ 23 benchmarks are dominated by system calls

System calls cannot be simulated consistently and are left out of the measure. The reported value understates the real cost. Switch to the Walltime instrument to measure them.

Learn more about system calls

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ℹ️ 40 benchmarks have no flamegraph

The flamegraph wasn't generated: the symbols of the profiling trace could not be resolved, because no information about the language frames was collected.

See affected benchmarks

⚡ 1 improved benchmark
❌ 1 regressed benchmark
✅ 2406 untouched benchmarks
⏩ 12 skipped benchmarks¹

Warning

Please fix the performance issues or acknowledge them on CodSpeed.

Performance Changes

	Mode	Benchmark	BASE	HEAD	Efficiency
❌	Walltime	bitpack_blocked_compress_avx2	6.7 µs	7.6 µs	-11.3%
⚡	Walltime	threshold_neon[80]	4 µs	3.5 µs	+13.48%

Tip

Investigate this regression by commenting @codspeedbot fix this regression on this PR, or directly use the CodSpeed MCP with your agent.

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_{Comparing ji/scan-v2-chain-3-drivers (25458e3) with ji/scan-v2-chain-2-planners (26c4265)²}

Footnotes

1. 12 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

2. No successful run was found on ji/scan-v2-chain-2-planners (c441bc4) during the generation of this report, so 872b4d1 was used instead as the comparison base. There might be some changes unrelated to this pull request in this report. ↩