Kafka RecordTooLargeException: The 1MB Limit and How to Fix It
Hitting RecordTooLargeException in Kafka? Learn why the 1MB default bites on both producer and broker, and the exact configs to fix it properly.
Java
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Kafka RebalanceInProgressException: Why It Happens and How to Fix It
Kafka RebalanceInProgressException on commitSync/commitAsync with CooperativeStickyAssignor? Here's why it's not CommitFailedException, and the correct fix.
Kafka ProducerFencedException: Why It Happens and How to Fix It
ProducerFencedException: there is a newer producer with the same transactionalId. What fences a Kafka transactional producer and the exact fix, explained.
Kafka OffsetOutOfRangeException: auto.offset.reset Explained
Fix OffsetOutOfRangeException and NoOffsetForPartitionException in Kafka: why committed offsets vanish, what auto.offset.reset really does, and safe resets.
Kafka NotLeaderOrFollowerException: Cause and Fix
Producer or consumer failing with NotLeaderOrFollowerException (NOT_LEADER_OR_FOLLOWER)? Why stale leader metadata causes it and how to fix it for good.
Kafka NotEnoughReplicasException: Fix NOT_ENOUGH_REPLICAS Errors
Kafka NotEnoughReplicasException: messages rejected since there are fewer in-sync replicas than required. Fix min.insync.replicas vs acks=all, fast.
Kafka NotControllerException: Why It Happens and How to Fix It
Kafka throws NotControllerException (code 41) when an admin request hits a broker that isn't the active controller. Here's the mechanism and the real fix.
Kafka IllegalStateException: No Current Assignment for Partition
Getting java.lang.IllegalStateException: No current assignment for partition on seek()? Why Kafka's lazy assignment causes it — and the correct fix.
Kafka NetworkException: The Server Disconnected — How to Fix It
Fix org.apache.kafka.common.errors.NetworkException: the server disconnected before a response was received. Root causes, idempotent retries, LB timeouts.
Kafka: Marking the Coordinator Dead — Causes and Fix
Kafka consumer stuck logging 'Marking the coordinator dead' / 'Group coordinator is unavailable or invalid, will attempt rediscovery'. Here's the real cause and the fix.