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https://issues.apache.org/jira/browse/KAFKA-14524?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ismael Juma updated KAFKA-14524:
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Description:
The `core` module has grown too large and it's time to split it into multiple
modules. A much slimmer `core` module will remain in the end.
Evidence of `core` growing too large is that it takes 1m10s to compile the main
code and tests and it takes hours to run all the tests sequentially.
As part of this effort, we should rewrite the Scala code in Java to reduce
developer friction, reduce compilation time and simplify deployment (i.e. we
can remove the scala version suffix from the module name). Scala may have a
number of advantages over Java 8 (minimum version we support now) and Java 11
(minimum version we will support in Kafka 4.0), but a mixture of Scala and Java
(as we have now) is more complex than just Java.
This pattern was started with the `metadata` and `raft` modules and we have
(when this ticket was filed) a couple more in progress: `group-coordinator` and
`storage`.
This is an umbrella ticket and it will link to each ticket related to this goal.
> Modularize `core` monolith
> --------------------------
>
> Key: KAFKA-14524
> URL: https://issues.apache.org/jira/browse/KAFKA-14524
> Project: Kafka
> Issue Type: Improvement
> Reporter: Ismael Juma
> Priority: Major
>
> The `core` module has grown too large and it's time to split it into multiple
> modules. A much slimmer `core` module will remain in the end.
> Evidence of `core` growing too large is that it takes 1m10s to compile the
> main code and tests and it takes hours to run all the tests sequentially.
> As part of this effort, we should rewrite the Scala code in Java to reduce
> developer friction, reduce compilation time and simplify deployment (i.e. we
> can remove the scala version suffix from the module name). Scala may have a
> number of advantages over Java 8 (minimum version we support now) and Java 11
> (minimum version we will support in Kafka 4.0), but a mixture of Scala and
> Java (as we have now) is more complex than just Java.
> This pattern was started with the `metadata` and `raft` modules and we have
> (when this ticket was filed) a couple more in progress: `group-coordinator`
> and `storage`.
> This is an umbrella ticket and it will link to each ticket related to this
> goal.
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