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.
spring-kafka
35 PostsKafka 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.
Fix KafkaConsumer Is Not Safe for Multi-Threaded Access
Hitting ConcurrentModificationException: KafkaConsumer is not safe for multi-threaded access? Here's why the thread guard fires and the correct 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 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 SerializationException: Can't Convert Value of Class Fix
Kafka SerializationException: Can't convert value of class X to StringSerializer? The ClassCastException behind it, the config fix, and the safer design.
Kafka: Cannot Perform Operation After Producer Closed
Kafka IllegalStateException 'Cannot perform operation after producer has been closed' explained: why it happens, the Spring share
Kafka: Consumer Is Not Subscribed to Any Topics — Fix
IllegalStateException: Consumer is not subscribed to any topics or assigned any partitions — why poll() throws it, the subscribe/assign contract, and the fix.
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.