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https://issues.apache.org/jira/browse/KAFKA-15473?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17766595#comment-17766595
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Greg Harris commented on KAFKA-15473:
-------------------------------------
I've opened [https://github.com/apache/kafka/pull/14398] with strategy (3) from
above. We can always implement (1) in the future and change the
PluginInfo::equals implementation to show these duplicates, so we can hide them
for now. I think (2) removes functionality from the API and would count as a
regression itself.
> Connect connector-plugins endpoint shows duplicate plugins
> ----------------------------------------------------------
>
> Key: KAFKA-15473
> URL: https://issues.apache.org/jira/browse/KAFKA-15473
> Project: Kafka
> Issue Type: Bug
> Components: KafkaConnect
> Affects Versions: 3.6.0
> Reporter: Greg Harris
> Assignee: Greg Harris
> Priority: Major
> Fix For: 3.6.0
>
>
> In <3.6.0-rc0, only one copy of each plugin would be shown. For example:
> {noformat}
> {
> "class": "org.apache.kafka.connect.storage.StringConverter",
> "type": "converter"
> },{noformat}
> In 3.6.0-rc0, there are multiple listings for the same plugin. For example:
>
> {noformat}
> {
> "class": "org.apache.kafka.connect.storage.StringConverter",
> "type": "converter"
> },
> {
> "class": "org.apache.kafka.connect.storage.StringConverter",
> "type": "converter"
> },
> {
> "class": "org.apache.kafka.connect.storage.StringConverter",
> "type": "converter"
> },
> {
> "class": "org.apache.kafka.connect.storage.StringConverter",
> "type": "converter"
> },
> {
> "class": "org.apache.kafka.connect.storage.StringConverter",
> "type": "converter"
> },
> {
> "class": "org.apache.kafka.connect.storage.StringConverter",
> "type": "converter",
> "version": "3.6.0"
> },{noformat}
> These duplicates appear to happen when a plugin with the same class name
> appears in multiple locations/classloaders.
> When interpreting a connector configuration, only one of these plugins will
> be chosen, so only one is relevant to show to users. The REST API should only
> display the plugins which are eligible to be loaded, and hide the duplicates.
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