Hey guys I might be missing something in v2 but in v1 I beli

Question

Hey guys I might be missing something in v2 but in v1 I belive we can re run just the failed tasks from a flow run can we do the same in v2

Michael Law · Answer

<https discourse prefect io t how can i restart a flow in prefect 2 0 1332 8> Im guessing this still stands so re runnin only failed tasks won t be possible on a flow

Michael Law · Answer

Possibly once sub flows have the better method of dynamically chaining this might not be an issue but does feel like a substatial regression from v1 where I believe this is possible to do

Rob Freedy · Answer

You are correct that re running only failed tasks is not currently supported I would recommend implementing caching on your tasks which can accomplish similar behavior <https docs prefect io concepts tasks h=caching caching>

Michael Law · Answer

< Rob Freedy> I m not sure if this is the correct you link were supposed to point me towards for caching

Michael Law · Answer

< Anna Geller> < Rob Freedy> In regards to caching do FAILED state tasks get cached Also are tasks cached from time of completion of the overall flow or from when the task was executed

Rob Freedy · Answer

< Michael Law> Apologies on the incorrect link From the above correct link When each task run requested to enter a `Running` state it provided its cache key computed from the `cache key fn` The Orion backend identified that there was a COMPLETED state associated with this key and instructed the run to immediately enter the same COMPLETED state including the same return values

Michael Law · Answer

Nice one thanks Does this also imply that if it enters a state FAILED it does not get cached