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https://issues.apache.org/jira/browse/SPARK-33913?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17255395#comment-17255395
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L. C. Hsieh commented on SPARK-33913:
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Seems we cannot upgrade to Kafka 2.7.0. Because Kafka core inlines the Scala
library, you can not use a different Scala patch version than what Kafka used
to compile its jars: https://github.com/embeddedkafka/embedded-kafka/issues/202
Kafka 2.7.0 uses Scala 2.12.12 and currently Spark uses Scala 2.12.10, so there
will be {{java.lang.NoClassDefFoundError: scala/math/Ordering$$anon$7}} errors.
Due to an issue in Scala 2.12.12, Spark won't upgrade to Scala 2.12.12:
https://github.com/scala/bug/issues/12096, and waits for Scala 2.12.13.
So, seems for Kafka, Spark needs to wait for next Kafka version which uses
Scala 2.12.13 too.
> Upgrade Kafka to 2.7.0
> ----------------------
>
> Key: SPARK-33913
> URL: https://issues.apache.org/jira/browse/SPARK-33913
> Project: Spark
> Issue Type: Improvement
> Components: Build, DStreams
> Affects Versions: 3.2.0
> Reporter: dengziming
> Priority: Major
>
>
> The Apache Kafka community has released for Apache Kafka 2.7.0, some features
> are useful for example the KAFKA-9893
> configurable TCP connection timeout, more details :
> https://downloads.apache.org/kafka/2.7.0/RELEASE_NOTES.html
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