The number of MergeRequestCleanupRefsWorker tasks has increased by one million.

Dear all:

I am currently using the GitLab version gitlab/gitlab-ce:16.11.4-ce.0. Since June 19th, the number of Sidekiq tasks has increased from 100,000 to 1,000,000 and is still continuing to rise. Upon reviewing the statistics, it appears that almost all the tasks are from a worker called MergeRequestCleanupRefsWorker. I have tried various methods to resolve this issue but have not been successful. Could you please assist me in identifying the cause of this problem?


By restoring the backup to a new GitLab instance, the issue was resolved.