disable thread local locking in callbacks (#3319)

backend/danswer/background/celery/apps/primary.py

@@ -39,7 +39,6 @@
 from danswer.utils.logger import setup_logger
 from shared_configs.configs import MULTI_TENANT
 
-
 logger = setup_logger()
 
 celery_app = Celery(__name__)
@@ -117,9 +116,13 @@ def on_worker_init(sender: Any, **kwargs: Any) -> None:
     # it is planned to use this lock to enforce singleton behavior on the primary
     # worker, since the primary worker does redis cleanup on startup, but this isn't
     # implemented yet.
+
+    # set thread_local=False since we don't control what thread the periodic task might
+    # reacquire the lock with
     lock: RedisLock = r.lock(
         DanswerRedisLocks.PRIMARY_WORKER,
         timeout=CELERY_PRIMARY_WORKER_LOCK_TIMEOUT,
+        thread_local=False,
     )
 
     logger.info("Primary worker lock: Acquire starting.")

backend/danswer/background/celery/tasks/indexing/tasks.py

@@ -789,9 +789,12 @@ def connector_indexing_task(
         )
         break
 
+    # set thread_local=False since we don't control what thread the indexing/pruning
+    # might run our callback with
     lock: RedisLock = r.lock(
         redis_connector_index.generator_lock_key,
         timeout=CELERY_INDEXING_LOCK_TIMEOUT,
+        thread_local=False,
     )
 
     acquired = lock.acquire(blocking=False)

backend/danswer/background/celery/tasks/pruning/tasks.py

@@ -8,6 +8,7 @@
 from celery import Task
 from celery.exceptions import SoftTimeLimitExceeded
 from redis import Redis
+from redis.lock import Lock as RedisLock
 from sqlalchemy.orm import Session
 
 from danswer.background.celery.apps.app_base import task_logger
@@ -239,9 +240,12 @@ def connector_pruning_generator_task(
 
     r = get_redis_client(tenant_id=tenant_id)
 
-    lock = r.lock(
+    # set thread_local=False since we don't control what thread the indexing/pruning
+    # might run our callback with
+    lock: RedisLock = r.lock(
         DanswerRedisLocks.PRUNING_LOCK_PREFIX + f"_{redis_connector.id}",
         timeout=CELERY_PRUNING_LOCK_TIMEOUT,
+        thread_local=False,
     )
 
     acquired = lock.acquire(blocking=False)