CODEWITHSUNDEEP
scalaspring-bootapache-kafkaspring-kafkaspring-kafka-test
Rohit Naik
Rohit Naik

Reputation: 539

java.lang.NoClassDefFoundError: scala/collection/GenTraversableOnce at kafka.utils.TestUtils.tempDir(TestUtils.scala)

While using @EmbeddedKafka(topics = { "checkins" }) I am getting an error

Caused by: java.lang.NoClassDefFoundError: scala/collection/GenTraversableOnce
    at kafka.utils.TestUtils.tempDir(TestUtils.scala)
    at org.springframework.kafka.test.EmbeddedKafkaBroker$EmbeddedZookeeper.<init>(EmbeddedKafkaBroker.java:738)
    at org.springframework.kafka.test.EmbeddedKafkaBroker.afterPropertiesSet(EmbeddedKafkaBroker.java:291)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1853)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1790)

I am using spring boot 2.3.3.RELEASE

My gradle looks like

            compile("io.confluent:kafka-json-serializer:$confluentJsonVersion")
            compile ("org.apache.kafka:kafka-clients: $kafkaVersion")
            implementation ("org.springframework.boot:spring-boot-starter-validation")
            implementation("org.springframework.kafka:spring-kafak:$springKafkaVersion")
            implementation "org.apache.kafka:kafka-clients:$kafkaVersion"

        testImplementation("org.springframework.kafka:spring-kafka-test:$springKafkaVersion")
        testImplementation("org.apache.kafka:kafka_2.13:$kafkaVersion")
        testImplementation("org.apache.kafka:kafka_2.13:$kafkaVersion:test")
        testImplementation ("org.apache.kafka:kafka-clients:$kafkaVersion:test")

Upvotes: 1

Views: 2206

Answers (1)

Gary Russell
Gary Russell

Reputation: 174484

That interface only exists in the kafka_2.12 jars.

It appears you somehow have a 2.12 ...-test jar and a 2.13 kafka jar (which is not what your gradle says).

What does gradle dependencies say?

Upvotes: 2

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