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https://issues.apache.org/jira/browse/KAFKA-12629?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17324517#comment-17324517
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Wenbing Shen commented on KAFKA-12629:
--------------------------------------
Found another error log today:
One of the errors occurred in
testCreateClusterAndCreateAndManyTopicsWithManyPartitions, It reports:
java.util.concurrent.ExecutionException:
org.apache.kafka.common.errors.UnknownServerException: The server experienced
an unexpected error when processing the request.
The strange thing is that this test case creates topics of test-topic-1,
test-topic-2, and test-topic-3, but the log in the standard output indicates
that the copy acquisition thread of broker 0 needs to fetch test-topic-0
partition data from broker 1, But the hostname of broker 1 cannot be resolved.
The detailed log can be viewed from this link:
https://github.com/apache/kafka/pull/10551/checks?check_run_id=2373652453
> Flaky Test RaftClusterTest
> --------------------------
>
> Key: KAFKA-12629
> URL: https://issues.apache.org/jira/browse/KAFKA-12629
> Project: Kafka
> Issue Type: Test
> Components: core, unit tests
> Reporter: Matthias J. Sax
> Assignee: Luke Chen
> Priority: Critical
> Labels: flaky-test
>
> {quote} {{java.util.concurrent.ExecutionException:
> java.lang.ClassNotFoundException:
> org.apache.kafka.controller.NoOpSnapshotWriterBuilder
> at java.base/java.util.concurrent.FutureTask.report(FutureTask.java:122)
> at java.base/java.util.concurrent.FutureTask.get(FutureTask.java:191)
> at
> kafka.testkit.KafkaClusterTestKit.startup(KafkaClusterTestKit.java:364)
> at
> kafka.server.RaftClusterTest.testCreateClusterAndCreateAndManyTopicsWithManyPartitions(RaftClusterTest.scala:181)}}{quote}
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