[WIP] [Docs] Introduce versioned type mapping manifests (v1)#623
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[WIP] [Docs] Introduce versioned type mapping manifests (v1)#623aastha25 wants to merge 2 commits into
aastha25 wants to merge 2 commits into
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Introduces docs/type-mapping-manifests/ as a home for versioned cross-engine type contracts. v1 documents observed type behavior across Hive 1.1 (HMS), Iceberg 1.2 (table format v2), Spark 3.1, and Trino 400, organized by logical-type family. Each engine cell captures both bidirectional create paths: native -> engine read, and engine DDL -> native storage. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Adds decimal, date, time, timestamp variants, and Trino-only types (json, ipaddress). Completes string, float, binary, and array rows with previously-missing Spark and Trino observations. Renames "Temporal" section to "Date and time". Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Summary
Introduces docs/type-mapping-manifests/ as the home for versioned cross-engine type contracts, and ships the first release v1/ covering Hive 1.1, Iceberg 1.2 v2, Spark 3.1, and Trino 400. The manifest documents observed cross-dialect type
behavior — including silent divergences invisible to existing schema registries — giving downstream consumers (query planners, code generators, authoring agents) a single, version-pinnable source of truth.
Changes
For all the boxes checked, please include additional details of the changes made in this pull request. -
Adds two markdown files under a new docs/type-mapping-manifests/ directory:
paths: native → engine (top line) and engine → native (bottom line). Markers: — = no equivalent, ⚠ = silent divergence, ❌ = DDL rejected, TBD = not yet observed
Testing Done
-No code, build, or CI surface affected.
Documentation-only change; the added files are reference contract documents, not runnable code. Markdown rendering was verified on GitHub (including
line breaks within table cells).
For all the boxes checked, include a detailed description of the testing done for the changes made in this pull request.
Additional Information
For all the boxes checked, include additional details of the changes made in this pull request.