plugin

Overview ¶

Package plugin is the IVF-FLAT vector index plugin registration point.

Phase 4a (current) ¶

Skeleton landed. Catalog hooks (HiddenTableTypes, ParamsFromTree, DefaultOptions, SupportedOpTypes, ExperimentalFlag, SyncDescriptor) are fully implemented in runtime/. Compile and plan hooks are STUBS (see compile/compile.go and plan/plan.go). The plugin is intentionally NOT registered in pkg/indexplugin/all/all.go yet — the stub hooks would break IVF-FLAT DDL/query if dispatch routed through them. The remaining inline IVFFLAT case arms in pkg/sql/compile and pkg/sql/plan continue to handle IVF-FLAT until the lifts complete.

Phases 4b–4g (remaining) ¶

• 4b: collapse the inline `else if catalog.IsIvfIndexAlgo(...)` fallbacks in pkg/sql/compile/iscp_util.go and other dispatch sites — they're dead once the plugin is registered. Defer until 4c lands so registration is safe.
• 4c: lift compile DDL (handleVectorIvfFlatIndex + 5 helpers).
• 4d: lift buildIvfFlatSecondaryIndexDef.
• 4e: lift apply_indices_ivfflat.go (auto/pre/post mode, two-scan).
• 4f: lift DML sync (appendPreInsertSkVectorPlan + DELETE arms).
• 4g: lift IVF-FLAT case of indexParamsToMap + ivfflat.go table-function builders. Add init() registration once 4c–4f are complete (uncomment the `func init()` block below).