After a single-message delete has been kicked off, the channel can be readded to the reaper queue, and the backlog reloaded, before the messages have finished being deleted. This can cause the messages to receive two deletion attempts, causing a flurry of errors.
After a single-message delete has been kicked off, the channel can be readded to the reaper queue, and the backlog reloaded, before the messages have finished being deleted. This can cause the messages to receive two deletion attempts, causing a flurry of errors.