feat(schema): scan context support set table schema#394
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Purpose
Add
ScanContextBuilder::SetTableSchemaso scan operations can reuse a pre-loaded table schema instead of always loading the latest schema from table metadata.For main branch data table scans,
TableScannow parses the provided schema JSON viaTableSchema::CreateFromJson(...)and skipsSchemaManager::Latest(). If no schema is provided, or the scan targets a non-main branch, the existing latest-schema loading behavior is preserved.Tests
cmake --build build --target paimon-core-testctest -R paimon-core-test --output-on-failureAPI and Format
This change adds a public API in
include/paimon/scan_context.h:ScanContextBuilder& SetTableSchema(const std::string& table_schema)No storage format or protocol changes.
Documentation
This introduces a new scan-side optimization API. Inline API documentation is added in
scan_context.h.Generative AI tooling
Generated-by: OpenAI Codex GPT-5