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https://issues.apache.org/jira/browse/KAFKA-3156?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Gwen Shapira resolved KAFKA-3156.
---------------------------------
    Resolution: Won't Fix

This is the expected behavior.

You must upgrade the brokers before using new clients.

> Got EOFException When use 0.9.0.0 Kafka clients with broker 0.8.1.2.2
> ---------------------------------------------------------------------
>
>                 Key: KAFKA-3156
>                 URL: https://issues.apache.org/jira/browse/KAFKA-3156
>             Project: Kafka
>          Issue Type: Bug
>          Components: consumer
>    Affects Versions: 0.9.0.0
>            Reporter: Manyu Gou
>            Assignee: Neha Narkhede
>
> I use 0.9.0.0 new Consumer API with 0.8.1.2.2 Broker servers.
> when i try to call consumer.poll(0)
> i got exceptions in my debug log: (output in debug level log)
> [org.apache.kafka.common.network.Selector] - Connection with 
> ds106.fibo.com/192.168.2.106 disconnected
> java.io.EOFException
>       at 
> org.apache.kafka.common.network.NetworkReceive.readFromReadableChannel(NetworkReceive.java:83)
>       at 
> org.apache.kafka.common.network.NetworkReceive.readFrom(NetworkReceive.java:71)
>       at 
> org.apache.kafka.common.network.KafkaChannel.receive(KafkaChannel.java:160)
>       at 
> org.apache.kafka.common.network.KafkaChannel.read(KafkaChannel.java:141)
>       at org.apache.kafka.common.network.Selector.poll(Selector.java:286)
>       at org.apache.kafka.clients.NetworkClient.poll(NetworkClient.java:270)
>       at 
> org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.clientPoll(ConsumerNetworkClient.java:303)
>       at 
> org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.poll(ConsumerNetworkClient.java:197)
>       at 
> org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.poll(ConsumerNetworkClient.java:187)
>       at 
> org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.poll(ConsumerNetworkClient.java:157)
>       at 
> org.apache.kafka.clients.consumer.internals.AbstractCoordinator.ensureCoordinatorKnown(AbstractCoordinator.java:182)
>       at 
> org.apache.kafka.clients.consumer.KafkaConsumer.pollOnce(KafkaConsumer.java:857)
>       at 
> org.apache.kafka.clients.consumer.KafkaConsumer.poll(KafkaConsumer.java:829)
>       at 
> com.zbmy.sna.sna_stat_analysis_web.dbservice.ZHKafkaConsumerService.batchFetch(ZHKafkaConsumerService.java:24)
>       at KafkaTest.test(KafkaTest.java:21)
>       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>       at 
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
>       at 
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>       at java.lang.reflect.Method.invoke(Method.java:497)
>       at 
> org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
>       at 
> org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
>       at 
> org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
>       at 
> org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
>       at 
> org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:75)
>       at 
> org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86)
>       at 
> org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84)
>       at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
>       at 
> org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:254)
>       at 
> org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:89)
>       at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
>       at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
>       at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
>       at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
>       at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
>       at 
> org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
>       at 
> org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
>       at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
>       at 
> org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:193)
>       at org.junit.runner.JUnitCore.run(JUnitCore.java:160)
>       at 
> com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:78)
>       at 
> com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:212)
>       at 
> com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:68)
>       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>       at 
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
>       at 
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>       at java.lang.reflect.Method.invoke(Method.java:497)
>       at com.intellij.rt.execution.application.AppMain.main(AppMain.java:140)



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