Celery tasks intermittently not running.

[sheetaluk]

Occasionally, a top-level annotation is not getting reindexed after toggling the hidden status of it’s reply. It looks like the celery task to reindex the root annotation is being dispatched but not run.
See:

h/h/tasks/indexer.py

Line 25 in a91ed6d

add_annotation.delay(annotation.thread_root_id)

Continuing to toggle the hidden status of the reply seems to eventually fix things and starts working as expected again.

It is possible that the task is not being dispatched correctly or the task not being pulled from the queue.

To investigate locally:
If we’re using docker-compose to run the services, the RabbitMQ image we use is rabbitmq:3.6-management-alpine. The “management” part means that it is a RabbitMQ Docker image which includes the management console.
Details on how to access the management UI are in the README for the rabbitmq image we use: https://hub.docker.com/_/rabbitmq/

[lyzadanger]

Removing Added to sprint label as this is moving into a new sprint...on purpose!

[sheetaluk]

Could not reproduce this locally.

[seanh]

@robertknight Closing this on the assumption it's fixed. Reopen if necessary!