[PoC/Proposal] AQE-lite: change plan properties at runtime based on stats from pipeline breakers#23167

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avantgardnerio wants to merge 18 commits into

apache:mainfrom

coralogix:brent/runtime-optimizer

Commits on Jun 24, 2026

RuntimeOptimizerExec SLT: red baseline for hash-join build-side swap
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RuntimeOptimizerExec passthrough + insertion rule
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PipelineBreakerBuffer passthrough + insertion above breakers
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PipelineBreakerBuffer: load-bearing + AtomicWaker coordinator wakeup
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RuntimeRule trait + SwapBuildSideIfInverted (log-only)
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runtime_row_count: gate via buffer is_ready, passthrough ProjectionExec
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Document why pipeline_behavior() isn't suitable for breaker detection
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Commits on Jun 25, 2026