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https://issues.apache.org/jira/browse/KAFKA-10251?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17303205#comment-17303205
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Luke Chen commented on KAFKA-10251:
-----------------------------------
Found the root cause, which is we are bouncing broker during the test to verify
the transnational data is still as expected. However, the broker down and on,
will fail the rebalance due to {{error when storing group assignment during
SyncGroup}}. To fix it, we can make the rebalance happened earlier before
broker bouncing, so that we can make sure when test starts, we can start the
records consuming, instead of rebalancing.
PR:[https://github.com/apache/kafka/pull/10338]
Thanks.
> Flaky Test kafka.api.TransactionsBounceTest.testWithGroupMetadata
> -----------------------------------------------------------------
>
> Key: KAFKA-10251
> URL: https://issues.apache.org/jira/browse/KAFKA-10251
> Project: Kafka
> Issue Type: Bug
> Components: core
> Reporter: A. Sophie Blee-Goldman
> Assignee: Luke Chen
> Priority: Major
>
> h3. Stacktrace
> org.scalatest.exceptions.TestFailedException: Consumed 0 records before
> timeout instead of the expected 200 records at
> org.scalatest.Assertions.newAssertionFailedException(Assertions.scala:530) at
> org.scalatest.Assertions.newAssertionFailedException$(Assertions.scala:529)
> at
> org.scalatest.Assertions$.newAssertionFailedException(Assertions.scala:1389)
> at org.scalatest.Assertions.fail(Assertions.scala:1091) at
> org.scalatest.Assertions.fail$(Assertions.scala:1087) at
> org.scalatest.Assertions$.fail(Assertions.scala:1389) at
> kafka.utils.TestUtils$.pollUntilAtLeastNumRecords(TestUtils.scala:842) at
> kafka.api.TransactionsBounceTest.testWithGroupMetadata(TransactionsBounceTest.scala:109)
>
>
> The logs are pretty much just this on repeat:
> {code:java}
> [2020-07-08 23:41:04,034] ERROR Error when sending message to topic
> output-topic with key: 9955, value: 9955 with error:
> (org.apache.kafka.clients.producer.internals.ErrorLoggingCallback:52)
> org.apache.kafka.common.KafkaException: Failing batch since transaction was
> aborted at
> org.apache.kafka.clients.producer.internals.Sender.maybeSendAndPollTransactionalRequest(Sender.java:423)
> at
> org.apache.kafka.clients.producer.internals.Sender.runOnce(Sender.java:313)
> at org.apache.kafka.clients.producer.internals.Sender.run(Sender.java:240) at
> java.lang.Thread.run(Thread.java:748) [2020-07-08 23:41:04,034] ERROR Error
> when sending message to topic output-topic with key: 9959, value: 9959 with
> error: (org.apache.kafka.clients.producer.internals.ErrorLoggingCallback:52)
> org.apache.kafka.common.KafkaException: Failing batch since transaction was
> aborted at
> org.apache.kafka.clients.producer.internals.Sender.maybeSendAndPollTransactionalRequest(Sender.java:423)
> at
> org.apache.kafka.clients.producer.internals.Sender.runOnce(Sender.java:313)
> at org.apache.kafka.clients.producer.internals.Sender.run(Sender.java:240) at
> java.lang.Thread.run(Thread.java:748)
> {code}
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