Federico Valeri created KAFKA-14720:
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Summary: Tools migration guidelines
Key: KAFKA-14720
URL: https://issues.apache.org/jira/browse/KAFKA-14720
Project: Kafka
Issue Type: Improvement
Reporter: Federico Valeri
The tools migration effort is ongoing and being tracked in KAFKA-14525. This is
part of a bigger initiative to split the core module into multiple modules
(e.g. storage, network, security, tools), which is being tracked in KAFKA-14524.
The plan is to migrate tools and related classes in a fully compatible way from
kafka.tools and kafka.admin packages (core module) to org.apache.kafka.tools
package (tools module).
While kicking off this activity, we identified a number of potential
compatibility issues:
* Missing wrapper: some tools do not have a wrapper script. There are system
tests that directly refer to the tool's fully qualified class name (FQCN) and
expect the old package name when running on old Kafka releases. They are often
used for troubleshooting or automation through the “kafka-run-class.sh” script
which takes the FQCN as input parameter.
* SPI argument: some tools have arguments for setting a custom SPI
implementation to be used in place of the default implementation. Any custom
SPI implementation depends on the old package name.
* Broken tool: some tools do not work on supported releases.
* Core dependency: some tools require access to non-trivial core classes that
should be migrated first.
See KIP-906 for more information.
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