Add pg_upgrade support functions #2326
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Add pg_upgrade support functions for PostgreSQL major version upgrades NOTE: This PR was created with AI tools and a human. The ag_graph.namespace column uses the regnamespace type, which pg_upgrade cannot handle in user tables. This commit adds four SQL functions to enable seamless PostgreSQL major version upgrades while preserving all graph data. New functions in ag_catalog: - age_prepare_pg_upgrade(): Converts namespace from regnamespace to oid, creates backup table with graph-to-namespace mappings - age_finish_pg_upgrade(): Remaps stale OIDs after upgrade, restores regnamespace type, invalidates AGE caches - age_revert_pg_upgrade_changes(): Cancels preparation if upgrade is aborted - age_pg_upgrade_status(): Returns current upgrade readiness status Usage: 1. Before pg_upgrade: SELECT age_prepare_pg_upgrade(); 2. Run pg_upgrade as normal 3. After pg_upgrade: SELECT age_finish_pg_upgrade(); The functions include automatic cache invalidation by touching graph namespaces, ensuring cypher queries work immediately without requiring a session reconnect. Files changed: - sql/age_pg_upgrade.sql: New file with function implementations - sql/sql_files: Added age_pg_upgrade entry - age--1.7.0--y.y.y.sql: Added functions for extension upgrades All regressions tests passed.
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Add pg_upgrade support functions for PostgreSQL major version upgrades
NOTE: This PR was created with AI tools and a human.
The ag_graph.namespace column uses the regnamespace type, which pg_upgrade cannot handle in user tables. This commit adds four SQL functions to enable seamless PostgreSQL major version upgrades while preserving all graph data.
New functions in ag_catalog:
Usage:
The functions include automatic cache invalidation by touching graph namespaces, ensuring cypher queries work immediately without requiring a session reconnect.
Files changed:
All regressions tests passed.