kafka-errors - Gopi Gorantala (Page 6)

Kafka BufferExhaustedException: Fix Failed to Allocate Memory

Kafka producer throws BufferExhaustedException: failed to allocate memory within max blocking time? Here's why buffer.memory fills up and the exact fix.

Kafka "Connection to node -1 could not be established" — Fix

Fix Kafka's "Connection to node -1 (localhost/127.0.0.1:9092) could not be established. Broker may not be available" — the Docker advertised.listeners fix.

Kafka SerializationException: Fixing Poison Pill Records

Kafka SerializationException: "Error deserializing key/value" crashes your consumer in a loop. Fix it with ErrorHandlingDeserializer and a dead letter topic.

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 FencedInstanceIdException: Fix Static Membership Collisions

FencedInstanceIdException means two live consumers share one group.instance.id. Here's why the broker fences the old one, and how to fix it for good.

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 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 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.

Kafka InvalidReplicationFactorException: Larger Than Available Brokers

Fix Kafka's InvalidReplicationFactorException — "Replication factor: 3 larger than available brokers: 1" — in Docker and single-broker dev setups fast.

Kafka ListenerNotFoundException: No Matching Listener Fix

Kafka ListenerNotFoundException and 'leader brokers without a matching listener' explained: why the leader lacks the listener, how to reproduce, and the fix.