db-lock-b.json

{
  "name": "db-lock-b",
  "pair": "db-lock",
  "phase": "B",
  "description": "Fix a database locked error in a different agent that uses a task queue backed by SQLite.",
  "setup": {
    "repo_state": "task_queue.py using sqlite3.connect() for job queue",
    "error_message": "sqlite3.OperationalError: database is locked",
    "trigger": "scheduler and worker accessing same DB file",
    "lesson_pool_available": true,
    "relevant_lesson": "agent-state-database-lock-cleanup"
  },
  "expected_outcome": {
    "retrieves_lesson": true,
    "avoids_dead_end": "don't just add sleep(1) as a hack",
    "fix_approach": "apply WAL mode + timeout from prior lesson, adapted to task queue context",
    "lesson_generated": false
  },
  "validation": {
    "searched_misakanet": true,
    "found_db_lock_lesson": true,
    "fix_uses_wal_or_timeout": true
  },
  "measures": "Whether agent retrieves prior DB lock lesson and applies pattern to new context"
}