has anyone else had issues with the sample code ha...
# ask-communityr
Ryan Kelly
01/31/2021, 3:29 PMhas anyone else had issues with the sample code hanging from the flow-to-flow documentation? https://docs.prefect.io/core/idioms/flow-to-flow.html
Ryan Kelly
01/31/2021, 3:29 PMRyan Kelly
01/31/2021, 7:55 PMas you can see from the picture theres 3 flows registered with 1 of them being the parent and when the parent is run it says its starting flow A but it never finishes
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Dylan
02/01/2021, 3:37 PM
Hi @Ryan Kelly!
Be sure to have an agent running that can pick up these Flows. The Flows-of-Flows pattern relies on the central Prefect Cloud / Prefect Server scheduler
r
Ryan Kelly
02/01/2021, 3:38 PMi did it through cloud first and it hung as well
Ryan Kelly
02/01/2021, 3:38 PMused prefect cli to run the local agent and the parent flow script had a 10min schedule instead of calling flow.run()
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Dylan
02/01/2021, 3:44 PM
Since you’re running locally, make sure that the agent’s labels and the Flow’s labels match up
Dylan
02/01/2021, 3:48 PM
r
Ryan Kelly
02/01/2021, 5:28 PM@Dylan is this a facet of flow of flows? these individuals flows (a and b) are picked up by the agent when they have their own schedules
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Dylan
02/01/2021, 5:47 PM
Ah okay then the labels are configured correctly
Dylan
02/01/2021, 5:48 PM
Let me dig into this a bit
r
Ryan Kelly
02/01/2021, 6:57 PM@Dylan thanks! been racking my brain on what im missing in this small scale test 🤪
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Dylan
02/01/2021, 7:14 PM
One thing that’s sticking out to me is that
flow_a()Dylan
02/01/2021, 7:15 PM
Is that the exact sample code?
r
Ryan Kelly
02/01/2021, 10:35 PM@Dylan yep everything in the screenshot is everything thats registered and run
Ryan Kelly
02/01/2021, 10:35 PMits the way the sample code in the documentation is outlined
Ryan Kelly
02/01/2021, 10:36 PMd
Dylan
02/01/2021, 10:39 PM
Can you share the error you’re experiencing?
r
Ryan Kelly
02/01/2021, 10:39 PMflow_a is above the parent flow context and then only dependent flows are called in the context
Ryan Kelly
02/01/2021, 10:39 PMits in the top left window of the screenshot
Ryan Kelly
02/01/2021, 10:40 PMoh
Ryan Kelly
02/01/2021, 10:40 PMit stopped hanging
Ryan Kelly
02/01/2021, 10:40 PM Copy code
[2021-01-31 10:27:07-0500] INFO - prefect.FlowRunner | Beginning Flow run for 'parent-flow'
[2021-01-31 10:27:07-0500] INFO - prefect.TaskRunner | Task 'Flow a': Starting task run...
[2021-02-01 10:59:51-0500] INFO - prefect.TaskRunner | FAIL signal raised: FAIL('94609a76-09a3-4052-b002-9b4295be6ccf finished in state <Failed: "Failed after exceeding scheduled work SLA.">')
[2021-02-01 10:59:51-0500] INFO - prefect.TaskRunner | Task 'Flow a': Finished task run for task with final state: 'Failed'
[2021-02-01 10:59:51-0500] INFO - prefect.TaskRunner | Task 'Flow b': Starting task run...
[2021-02-01 10:59:51-0500] INFO - prefect.TaskRunner | Task 'Flow b': Finished task run for task with final state: 'TriggerFailed'
[2021-02-01 10:59:51-0500] INFO - prefect.FlowRunner | Flow run FAILED: some reference tasks failed.Ryan Kelly
02/01/2021, 10:41 PMhung for a little over 24 hours
d
Dylan
02/02/2021, 3:15 PM
Hey @Ryan Kelly would you mind opening an issue for this? We’ll take a look
Dylan
02/02/2021, 3:15 PM
It might be something with the 0.14.0 upgrade
r
Ryan Kelly
02/02/2021, 3:18 PMah interesting
Ryan Kelly
02/02/2021, 3:19 PMyeah im on prefect version 0.14.4
Ryan Kelly
02/02/2021, 3:20 PMin theory i should be able to install 0.13.x and it will work?
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Dylan
02/02/2021, 3:28 PM
I’m not sure, may be worth a shot though
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Ryan Kelly
02/02/2021, 6:25 PM@Dylan didnt work on 0.13 or 0.12 still hangs… is opening a bug still worth it if its not tied to a specific version?
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Dylan
02/02/2021, 6:28 PM
Yes for sure 👍
r
Ryan Kelly
02/03/2021, 3:48 PMsubmitted thanks for your help @Dylan!
Ryan Kelly
02/03/2021, 3:48 PMd
Dylan
02/03/2021, 3:48 PM
You bet!
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