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https://issues.apache.org/jira/browse/KAFKA-15350?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Greg Harris resolved KAFKA-15350.
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Resolution: Invalid
I believe this was an environmental problem, due to some stale artifacts. A
clean build fixed the issues I was seeing.
> MetadataLoaderMetrics has ClassNotFoundException in system tests
> ----------------------------------------------------------------
>
> Key: KAFKA-15350
> URL: https://issues.apache.org/jira/browse/KAFKA-15350
> Project: Kafka
> Issue Type: Bug
> Components: kraft, system tests
> Affects Versions: 3.6.0
> Reporter: Greg Harris
> Priority: Blocker
>
> The system tests appear to be failing on trunk with:
> {noformat}
> [2023-08-15 22:11:34,235] ERROR Exiting Kafka due to fatal exception
> (kafka.Kafka$)
> java.lang.NoClassDefFoundError:
> org/apache/kafka/image/loader/MetadataLoaderMetrics
> at kafka.server.KafkaRaftServer.<init>(KafkaRaftServer.scala:68)
> at kafka.Kafka$.buildServer(Kafka.scala:83)
> at kafka.Kafka$.main(Kafka.scala:91)
> at kafka.Kafka.main(Kafka.scala)
> Caused by: java.lang.ClassNotFoundException:
> org.apache.kafka.image.loader.MetadataLoaderMetrics
> at java.net.URLClassLoader.findClass(URLClassLoader.java:387)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:352)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
> ... 4 more{noformat}
> This happens with the `tests/kafkatest/tests/connect/`,
> `tests/kafkatest/tests/core/kraft_upgrade_test.py` and possibly others.
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