feat(distributed): wire coordinator-side distributed execution for scan queries#4

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vamsimanohar wants to merge 11 commits intomainfrom

distributed-refactor-and-test-fixes

Commits on Feb 24, 2026

feat(distributed): add distributed PPL query engine with operator pipeline
vamsimanohar
committed

Commits on Feb 25, 2026

feat(distributed): rework core interfaces and clean up execution code
vamsimanohar
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fix(distributed): drain last operator output in PipelineDriver to prevent infinite loop
vamsimanohar
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refactor(distributed): rename split package to dataunit and remove unused operator factories
vamsimanohar
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feat(distributed): add RelNode analyzer, shard discovery, and locality-aware assignment
vamsimanohar
committed
feat(distributed): add plan fragmenter and fragmentation context for scan queries
vamsimanohar
committed
feat(distributed): wire distributed query coordinator into execution engine
vamsimanohar
committed
fix(distributed): reject unsupported operations in RelNodeAnalyzer
vamsimanohar
committed

Commits on Feb 26, 2026