{
  "schema": "pg36-ch28-requirements-v1",
  "chapter": 28,
  "target": "pg36-l2-vagrant/pg-test",
  "postgresql_major": 18,
  "required_extensions": [
    "amcheck",
    "pg_freespacemap",
    "pg_visibility",
    "pgstattuple"
  ],
  "upstream": {
    "deployment": "../ch19/deployment-run.json",
    "observability": "../ch25/observability-run.json",
    "tuning": "../ch27/tuning-run.json"
  },
  "fixture": {
    "database": "pg36_maintenance",
    "role": "dbuser_pg36maint",
    "rows": 60000,
    "updated_rows": 40000,
    "deleted_rows": 10000,
    "expired_partition_rows": 10000,
    "current_partition_rows": 5000
  },
  "risk": {
    "capture": "L0-read-only",
    "exercise": "L2-bounded-disposable-fixture",
    "production_data_permitted": false,
    "production_traffic_permitted": false,
    "cluster_configuration_change_permitted": false,
    "table_autovacuum_override": "disposable fixture only",
    "forced_drop_permitted": false
  },
  "acceptance": {
    "old_snapshot_must_retain_dead_tuples": true,
    "post_release_vacuum_must_remove_dead_tuples": true,
    "visibility_map_must_be_observed": true,
    "amcheck_must_pass": true,
    "concurrent_reindex_must_leave_one_valid_index": true,
    "partition_archive_must_round_trip": true,
    "exact_cleanup_required": true,
    "production_ch28_gate": "pending"
  }
}