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amuthan Ganeshan commented on KAFKA-7263: ----------------------------------------- I encountering this problem even in the Mirror Makers nowadays. it's not happening regularly but sporadically {code:java} 2019-10-10 17:49:14,703 ERROR [mirrormaker-thread-5] [kafka.tools.MirrorMaker$MirrorMakerThread] [] [mirrormaker-thread-5] Mirror maker thread failure due to java.lang.IllegalStateException: Coordinator selected invalid assignment protocol: null at org.apache.kafka.clients.consumer.internals.ConsumerCoordinator.onJoinComplete(ConsumerCoordinator.java:260) at org.apache.kafka.clients.consumer.internals.AbstractCoordinator.joinGroupIfNeeded(AbstractCoordinator.java:424) at org.apache.kafka.clients.consumer.internals.AbstractCoordinator.ensureActiveGroup(AbstractCoordinator.java:358) at org.apache.kafka.clients.consumer.internals.ConsumerCoordinator.poll(ConsumerCoordinator.java:353) at org.apache.kafka.clients.consumer.KafkaConsumer.updateAssignmentMetadataIfNeeded(KafkaConsumer.java:1251) at org.apache.kafka.clients.consumer.KafkaConsumer.poll(KafkaConsumer.java:1216) at org.apache.kafka.clients.consumer.KafkaConsumer.poll(KafkaConsumer.java:1201) at kafka.tools.MirrorMaker$ConsumerWrapper.receive(MirrorMaker.scala:327) at kafka.tools.MirrorMaker$MirrorMakerThread.run(MirrorMaker.scala:216) {code} > Container exception java.lang.IllegalStateException: Coordinator selected > invalid assignment protocol: null > ----------------------------------------------------------------------------------------------------------- > > Key: KAFKA-7263 > URL: https://issues.apache.org/jira/browse/KAFKA-7263 > Project: Kafka > Issue Type: Bug > Reporter: laomei > Priority: Major > > We are using spring-kafka and we get an infinite loop error in > ConsumerCoordinator.java; > kafka cluster version: 1.0.0 > kafka-client version: 1.0.0 > > 2018-08-08 15:24:46,120 ERROR > [org.springframework.kafka.listener.KafkaMessageListenerContainer$ListenerConsumer] > - Container exception > java.lang.IllegalStateException: Coordinator selected invalid assignment > protocol: null > at > org.apache.kafka.clients.consumer.internals.ConsumerCoordinator.onJoinComplete(ConsumerCoordinator.java:217) > at > org.apache.kafka.clients.consumer.internals.AbstractCoordinator.joinGroupIfNeeded(AbstractCoordinator.java:367) > at > org.apache.kafka.clients.consumer.internals.AbstractCoordinator.ensureActiveGroup(AbstractCoordinator.java:316) > at > org.apache.kafka.clients.consumer.internals.ConsumerCoordinator.poll(ConsumerCoordinator.java:295) > at > org.apache.kafka.clients.consumer.KafkaConsumer.pollOnce(KafkaConsumer.java:1138) > at > org.apache.kafka.clients.consumer.KafkaConsumer.poll(KafkaConsumer.java:1103) > at > org.springframework.kafka.listener.KafkaMessageListenerContainer$ListenerConsumer.run(KafkaMessageListenerContainer.java:556) > at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) > at java.util.concurrent.FutureTask.run(FutureTask.java:266) > at java.lang.Thread.run(Thread.java:745) > 2018-08-08 15:24:46,132 INFO > [org.springframework.kafka.listener.KafkaMessageListenerContainer$ListenerConsumer] > - Consumer stopped > 2018-08-08 15:24:46,230 INFO > [org.springframework.kafka.listener.KafkaMessageListenerContainer$ListenerConsumer] > - Consumer stopped > 2018-08-08 15:24:46,234 INFO [org.springfram -- This message was sent by Atlassian Jira (v8.3.4#803005)