[Bug] MIrrormaker2 stopped replicating one partition after restart

[dzasta997]

Hi!
MM2 stopped replicating single partitions on few topics, for example 2nd out of 12 or 16th out of 24. It started after restart caused by timeout, which happened before.

• There was no configuration change in both source and target clusters within the time it stopped
• Both clusters have the same number of brokers - 3
• Mirrored topics have the same number of partitions
• Number of tasks dropped from 71 to 70 (following metrics in dashboard) - tasksMax was always set 70
• Messages are plaintext with key

I am looking for a possible reason or a clue where to look for it

Strimzi version: 0.42.0
Kubernetes version: 1.26