Where Did the Messages Go?Kafka · easy · ~10 minReconciliation found ~0.4% of audit events missing from the audit-log topic last month. The gaps cluster around two broker restarts during a rolling upgrade. Producers reported no errors at the time.No errors, but missing data. Work out how that's possible and lock it down.Evidence

Evidence

Config

Checkpoints

How can data vanish when the producer saw only successes?

The correct producer configuration for this topic?

What does acks=all cost, and how do you justify the choice interview-style for audit data?