Fixed the celery async mode (Bug 804788)

lib/es/management/commands/reindex.py

@@ -308,7 +308,8 @@ class Command(BaseCommand):
         delete.add_task(delete_indexes, args=[to_remove])
 
         # let's do it
-        tree.apply_async()
+        log('Running all indexation tasks')
+        tree.apply_and_join()
 
         # let's return the /_aliases values
         aliases = call_es('_aliases').json

lib/settings_base.py

@@ -1050,7 +1050,8 @@ CELERY_IGNORE_RESULT = True
 CELERY_SEND_TASK_ERROR_EMAILS = True
 CELERYD_LOG_LEVEL = logging.INFO
 CELERYD_HIJACK_ROOT_LOGGER = False
-CELERY_IMPORTS = ('lib.video.tasks', 'lib.metrics')
+CELERY_IMPORTS = ('lib.video.tasks', 'lib.metrics',
+                  'lib.es.management.commands.reindex')
 # We have separate celeryds for processing devhub & images as fast as possible
 # Some notes:
 # - always add routes here instead of @task(queue=<name>)