mingaliu edited a comment on pull request #9548:
URL: https://github.com/apache/kafka/pull/9548#issuecomment-721242229
@ijuma , here is the callstack, and you can see why Kafka core is pulled in
from the client side (due to using KafakEmbedded in testing):
```
java.lang.NoClassDefFoundError: scala/math/Ordering$$anon$7
at kafka.api.ApiVersion$.orderingByVersion(ApiVersion.scala:45)
at kafka.api.ApiVersion.compare(ApiVersion.scala:139)
at kafka.api.ApiVersion.compare$(ApiVersion.scala:138)
at kafka.api.KAFKA_2_5_IV0$.compare(ApiVersion.scala:339)
at kafka.api.KAFKA_2_5_IV0$.compare(ApiVersion.scala:339)
at scala.math.Ordered.$greater$eq(Ordered.scala:91)
at scala.math.Ordered.$greater$eq$(Ordered.scala:91)
at kafka.api.KAFKA_2_5_IV0$.$greater$eq(ApiVersion.scala:339)
at kafka.server.KafkaConfig.<init>(KafkaConfig.scala:1529)
at kafka.server.KafkaConfig.<init>(KafkaConfig.scala:1238)
at
org.apache.kafka.streams.integration.utils.KafkaEmbedded.<init>(KafkaEmbedded.java:75)
at
org.apache.kafka.streams.integration.utils.EmbeddedKafkaCluster.start(EmbeddedKafkaCluster.java:103)
at
com.twitter.finatra.kafka.test.EmbeddedKafka.beforeAll(EmbeddedKafka.scala:61)
at
com.twitter.finatra.kafka.test.EmbeddedKafka.beforeAll$(EmbeddedKafka.scala:59)
at
com.twitter.finatra.kafkastreams.test.AbstractKafkaStreamsFeatureTest.beforeAll(KafkaStreamsFeatureTest.scala:26)
at
org.scalatest.BeforeAndAfterAll.liftedTree1$1(BeforeAndAfterAll.scala:212)
at org.scalatest.BeforeAndAfterAll.run(BeforeAndAfterAll.scala:210)
at org.scalatest.BeforeAndAfterAll.run$(BeforeAndAfterAll.scala:208)
at com.twitter.inject.Test.run(Test.scala:28)
at org.scalatestplus.junit.JUnitRunner.run(JUnitRunner.scala:99)
```
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