Hi I am starting to randomly see this on flow runs ```12 09

Question

Hi I am starting to randomly see this on flow runs ```12 09 39 ERROR prefect server ZombieKiller TaskRun No heartbeat detected from the remote task marking the run as failed 12 22 53 INFO prefect server Lazarus FlowRun Rescheduled by a Lazarus process This is attempt 1 ``` I am running on GKE autopilot any ideas how to debug cause of such events and mitigate against their occurence

Joshua Greenhalgh · Answer

Happens rarely but once or twice every few days

Joshua Greenhalgh · Answer

I see this has been written up about it <https discourse prefect io t flow is failing with an error message no heartbeat detected from the remote task 79> so from this description I should try setting the heartbeat mode to thread but this may not solve

Kevin Kho · Answer

Yes that s exactly right Thread will be more stable but you may be running into issues where the task is dying due to memory issues