Alexis, I see this often in some of the clusters I maintain. The restricted scheduling only applies to the node where the back pressure is occurring. The red and amber colours on the UI are there as a clue to the user that back pressure is occurring.
You can test this for example by using the queue history to see that the back pressured node has a high queue count and a low throughput, whereas the other nodes will be the opposite. Regards Steve Hindmarch From: Alexis Sarda-Espinosa <sarda.espin...@gmail.com> Sent: Tuesday, June 4, 2024 1:49 PM To: users@nifi.apache.org Subject: Back pressure in a NiFi cluster You don't often get email from sarda.espin...@gmail.com<mailto:sarda.espin...@gmail.com>. Learn why this is important<https://aka.ms/LearnAboutSenderIdentification> Hello, If I have a NiFi cluster and a processor that is scheduled to run on all nodes, a queue for said processor basically represents a queue per node, right? And since the configured back pressure thresholds are also per node, it could be that 1 node is slower and reaches the threshold while the others run normally. If the processor is only back pressured in 1 node, does that also halt scheduling for the same processor in the other nodes? Regards, Alexis.
