https://prefect.io logo
#prefect-community
Title
# prefect-community
c

Cab Maddux

03/03/2020, 2:20 PM
Hi! I'm all of a sudden getting some failed flows/tasks due to Zombie Killer Process marking tasks as failed after they have completed successfully. Any suggestions?
z

Zachary Hughes

03/03/2020, 2:30 PM
Hi @Cab Maddux, sorry you're running into this issue-- looking into it on our end. In the meantime, are heartbeats enabled or disabled for your flow? https://docs.prefect.io/cloud/concepts/flows.html#disable-heartbeats
c

Cab Maddux

03/03/2020, 2:34 PM
Heartbeats should be enabled, we haven't disabled them
z

Zachary Hughes

03/03/2020, 2:42 PM
Okay, solid. I'm not 100% sure what prompted the Zombie on your end, but disabling heartbeats for your flow should prevent this problem moving forward. I'll keep looking into this, and let me know if you have any additional questions!
c

Cab Maddux

03/03/2020, 2:44 PM
OK sounds good, seems like a flaky problem, just reran the flow and succeeded so I'll keep an eye on it and we'll disable heartbeats fi continues
NVM not flaky, happened on that run as well, we'll disable heartbeat for this flow for now
Also maybe worth noting that mutation in docs linked above may need to be updated. Looks like you have
enableFlowHeartbeat
and
disableFlowHeartbeat
mutations with no
value
input so query in docs leads to 400 error
z

Zachary Hughes

03/03/2020, 3:04 PM
Oh man, sorry about that-- I'll get a PR in to fix that today.