[GH-ISSUE #672] [BUG] handler not found for task #1354

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opened 2026-03-07 22:08:52 +03:00 by kerem · 1 comment

kerem commented

2026-03-07 22:08:52 +03:00

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Originally created by @mohit-singh-pepper on GitHub (Jun 20, 2023).
Original GitHub issue: https://github.com/hibiken/asynq/issues/672

Originally assigned to: @hibiken on GitHub.

Describe the bug
I receive handler not found for task on registered types. On multiple retries via asyncmon 5-6 times it passes automatically without any code change or server restart. How can I debug this ?

Expected behavior
If task handler is available once, it should be available always or it should never work.

Environment (please complete the following information):

OS: MacOS
Version of asynq package [e.g. v0.24.0]

Originally created by @mohit-singh-pepper on GitHub (Jun 20, 2023). Original GitHub issue: https://github.com/hibiken/asynq/issues/672 Originally assigned to: @hibiken on GitHub. **Describe the bug** I receive handler not found for task on registered types. On multiple retries via asyncmon 5-6 times it passes automatically without any code change or server restart. How can I debug this ? **Expected behavior** If task handler is available once, it should be available always or it should never work. **Environment (please complete the following information):** - OS: MacOS - Version of `asynq` package [e.g. v0.24.0]

kerem

2026-03-07 22:08:52 +03:00

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kerem commented

2026-03-07 22:08:53 +03:00

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@mohit-singh-pepper commented on GitHub (Jun 21, 2023):

It was because of multiple workers listening to same queue mistakenly. The stale worker was eating up the new tasks and throwing error.

@mohit-singh-pepper commented on GitHub (Jun 21, 2023): It was because of multiple workers listening to same queue mistakenly. The stale worker was eating up the new tasks and throwing error.

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starred/asynq#1354

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