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Guozhang Wang commented on KAFKA-4801: -------------------------------------- [~hachikuji] Saw this happen again but with a different stack trace: {code} kafka.api.ConsumerBounceTest > testConsumptionWithBrokerFailures FAILED java.lang.AssertionError: expected:<Set(topic-0)> but was:<Set()> at org.junit.Assert.fail(Assert.java:88) at org.junit.Assert.failNotEquals(Assert.java:834) at org.junit.Assert.assertEquals(Assert.java:118) at org.junit.Assert.assertEquals(Assert.java:144) at kafka.api.ConsumerBounceTest.consumeWithBrokerFailures(ConsumerBounceTest.scala:105) at kafka.api.ConsumerBounceTest.testConsumptionWithBrokerFailures(ConsumerBounceTest.scala:84) {code} > Transient test failure (part 2): > ConsumerBounceTest.testConsumptionWithBrokerFailures > ------------------------------------------------------------------------------------- > > Key: KAFKA-4801 > URL: https://issues.apache.org/jira/browse/KAFKA-4801 > Project: Kafka > Issue Type: Sub-task > Reporter: Armin Braun > Assignee: Jason Gustafson > Priority: Minor > Labels: transient-system-test-failure > > There is still some (but very little ... when reproducing this you need more > than 100 runs in half the cases statistically) instability left in the test > {code} > ConsumerBounceTest.testConsumptionWithBrokerFailures > {code} > Resulting in this exception being thrown at a relatively low rate (I'd say > def less than 0.5% of all runs on my machine). > {code} > kafka.api.ConsumerBounceTest > testConsumptionWithBrokerFailures FAILED > java.lang.IllegalArgumentException: You can only check the position for > partitions assigned to this consumer. > at > org.apache.kafka.clients.consumer.KafkaConsumer.position(KafkaConsumer.java:1271) > at > kafka.api.ConsumerBounceTest.consumeWithBrokerFailures(ConsumerBounceTest.scala:96) > at > kafka.api.ConsumerBounceTest.testConsumptionWithBrokerFailures(ConsumerBounceTest.scala:69) > {code} > this was also reported in a comment to the original KAFKA-4198 > https://issues.apache.org/jira/browse/KAFKA-4198?focusedCommentId=15765468&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-15765468 -- This message was sent by Atlassian JIRA (v6.3.15#6346)