Add nested struct schema evolution support for Map types - #23914

Merged

kosiew merged 19 commits into

apache:mainfrom

kosiew:map-evolution-03-20835

Aug 21, 2026

Commits on Jul 26, 2026

feat: enhance Map struct handling and validation
kosiew
committed
22c2394
feat: enhance cast_map_column to accept &MapArray and derive source metadata internally
kosiew
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b13fdf8
feat: enhance Map key/value handling and evolution semantics
kosiew
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28ab905
feat: enhance sorting behavior and key type requirements
kosiew
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d7930e1
feat(validation): optimize target Map validation and remove redundancy
kosiew
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ae4ca72
feat(validation): enhance key struct validation to reject no-overlap structs at planner boundary
kosiew
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cebbde7
feat(tests): add E2E negative Parquet test and refactor map fixture/schema helpers
kosiew
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15d34b1
feat: improve nested struct validation and enhance E2E tests
kosiew
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46560db

Commits on Jul 27, 2026

Commits on Aug 20, 2026