Hi: Every time, I restart my kafka stream app, it failed, and I have to reset the app, the error is:
org.apache.kafka.streams.errors.StreamsException: stream-thread [microapi-unified-profile-data-sync.dit-1067669c-2364-440d-a1c3-69ad45cc301d-StreamThread-4] Failed to rebalance. at org.apache.kafka.streams.processor.internals.StreamThread.pollRequests(StreamThread.java:972) at org.apache.kafka.streams.processor.internals.StreamThread.runOnce(StreamThread.java:863) at org.apache.kafka.streams.processor.internals.StreamThread.runLoop(StreamThread.java:819) at org.apache.kafka.streams.processor.internals.StreamThread.run(StreamThread.java:788) Caused by: java.lang.NullPointerException: Cannot invoke "org.apache.kafka.streams.processor.internals.SourceNode.getTimestampExtractor()" because "source" is null at org.apache.kafka.streams.processor.internals.StreamTask.<init>(StreamTask.java:230) at org.apache.kafka.streams.processor.internals.StreamTask.<init>(StreamTask.java:172) at org.apache.kafka.streams.processor.internals.StreamThread$TaskCreator.createTask(StreamThread.java:459) at org.apache.kafka.streams.processor.internals.StreamThread$TaskCreator.createTask(StreamThread.java:410) at org.apache.kafka.streams.processor.internals.StreamThread$AbstractTaskCreator.createTasks(StreamThread.java:395) at org.apache.kafka.streams.processor.internals.TaskManager.addStreamTasks(TaskManager.java:148) at org.apache.kafka.streams.processor.internals.TaskManager.createTasks(TaskManager.java:107) at org.apache.kafka.streams.processor.internals.StreamThread$RebalanceListener.onPartitionsAssigned(StreamThread.java:294) at org.apache.kafka.clients.consumer.internals.ConsumerCoordinator.onJoinComplete(ConsumerCoordinator.java:285) at org.apache.kafka.clients.consumer.internals.AbstractCoordinator.joinGroupIfNeeded(AbstractCoordinator.java:424) at org.apache.kafka.clients.consumer.internals.AbstractCoordinator.ensureActiveGroup(AbstractCoordinator.java:358) at org.apache.kafka.clients.consumer.internals.ConsumerCoordinator.poll(ConsumerCoordinator.java:353) at org.apache.kafka.clients.consumer.KafkaConsumer.updateAssignmentMetadataIfNeeded(KafkaConsumer.java:1251) at org.apache.kafka.clients.consumer.KafkaConsumer.poll(KafkaConsumer.java:1220) at org.apache.kafka.clients.consumer.KafkaConsumer.poll(KafkaConsumer.java:1159) at brave.kafka.clients.TracingConsumer.poll(TracingConsumer.java:84) at brave.kafka.clients.TracingConsumer.poll(TracingConsumer.java:78) at org.apache.kafka.streams.processor.internals.StreamThread.pollRequests(StreamThread.java:963) It works after reset, please help. Thanks Andrew This message and any attachments are intended only for the use of the addressee and may contain information that is privileged and confidential. If the reader of the message is not the intended recipient or an authorized representative of the intended recipient, you are hereby notified that any dissemination of this communication is strictly prohibited. If you have received this communication in error, notify the sender immediately by return email and delete the message and any attachments from your system.