Emil Østergaard07/12/2022, 10:01 AM
functionality in the UI, thinking it would delete all resources related to the flow_run, including the kubernetes job etc. It did not remove the kubernetes job, so I removed this manually. The issue is concurrency-limits: The tasks launched by this flow has a tag, with a concurrency limit. It appears the task data associated with the deleted flow run was not removed from prefect storage. For instance, if I try:
It shows a bunch of active task ids, even though nothing is running in k8s. This causes an unfortunate issue where any new flow runs, for this flow, will never start tasks, because prefect thinks the concurrency-limit is hit, due to these zombie tasks. However, I can not seem to find a way to manually clean up these task ids, which means this flow is dead. Any help is appreciated!
prefect concurrency-limit inspect my-tag
Emil Østergaard07/12/2022, 12:10 PM
to delete all related resources on the prefect-storage side. Such as any task runs associated with the flow-run etc. Assuming this is not the case at the moment. Regarding external resources. We have our agent deployed in a k8s cluster, and the agent has access to the k8s api. Would it not be possible to forward information from the agent, to the prefect-storage, and thus have it reflected in the UI? We often have problems with the information in the UI being out of sync with the actual state in k8s. Such as flows which look like they "run-forever" even if the k8s pod is long gone.
Emil Østergaard07/12/2022, 12:14 PM
flows which look like they "run-forever" even if the k8s pod is long goneas mentioned before, handling infrastructure crashes is a hard problem in a hybrid model and this is already on our radar. But if you mean something else, then creating a separate issue might be useful