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[GH-ISSUE #1051] [BUG] Tasks stuck in active state #1515
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starred/asynq#1515
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Originally created by @asadzeynal on GitHub (May 22, 2025).
Original GitHub issue: https://github.com/hibiken/asynq/issues/1051
Originally assigned to: @hibiken, @kamikazechaser on GitHub.
Describe the bug
Tasks are accumulating over time in the active queue and never get processed. It seems like they accumulate in batches. Last time an increase of stale tasks happened (>1000), it happened during Redis failure under high load. We had a problem, which resulted in 40k tasks failing in a matter of seconds, redis started to return TOO_MANY_REQUESTS and other errors.
After that, the number of active tasks in queue increased forever (It is not the first time this happens).
The stuck tasks are completed in reality, just not deleted from the active queue. Also, they do not have corresponding entries in lease.
Environment (please complete the following information):
To Reproduce
Not sure how to reproduce this behavior. Maybe stress redis until it starts returning TOO_MANY_REQUESTS might help, because this are the conditions under which it happened for us.
Screenshots
@kamikazechaser commented on GitHub (May 22, 2025):
Could you mention where and how redis is hosted?
@Mdhesari commented on GitHub (Aug 18, 2025):
@asadzeynal please check this out and help me complete:
https://github.com/Mdhesari/asynq-issue-reproduction
here's the similar repduction of your issue, please take a look, I have used ai for faster reproduction after different kinds of prompts...
@Ning-Qing commented on GitHub (Dec 26, 2025):
I've also encountered the same problem. May I ask if there are any solutions
@Ning-Qing commented on GitHub (Dec 26, 2025):
@kamikazechaser help