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the zk fsync is taking too long (4+ seconds). what’s in the broker log? in general, you can disable fsync or separate the zk data and datalog (journal) disks to avoid disk io issue.

I’ve got some response in github discussion, the main reason is that helm chart does not support k8s 1.24+ , and someone had already patched it. I’m going the try the latest helm charts. BTW, how to disable fsync with Pulsar?