@RunLLM Topic creation encountered an exception by initialize topic policies service am seeing in 3.0.6 and 3.0.11 pulsar

This error typically means Pulsar failed to initialize the topic policies service, often due to corruption or unavailability of the

__change_events

system topic or its underlying BookKeeper ledger. It can block topic creation and is frequently linked to BookKeeper ledger read failures, especially after restarts or data loss. Workarounds include disabling topic-level policies (

topicLevelPoliciesEnabled: "false"

) or manually cleaning up the broken ledger and ZooKeeper entries, then restarting the broker. Upgrading to Pulsar 3.0.12+ or 4.0.6+ with BookKeeper 4.16.7/4.17.2 is recommended, as these include fixes for related ledger corruption issues. See issue #24436 and issue #24553 for details. Would you like more detail on root causes, workarounds, or upgrade steps? Sources: - Pulsar issue #24436 - Pulsar issue #24553 👍 0 button 👎 0 button 💡 Hint: Mention @runllm in the thread for followups.