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https://issues.apache.org/jira/browse/KAFKA-9708?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17057438#comment-17057438
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ASF GitHub Bot commented on KAFKA-9708:
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gharris1727 commented on pull request #8281: KAFKA-9708: Use PluginClassLoader
during connector startup
URL: https://github.com/apache/kafka/pull/8281
* Use classloading prioritization from Worker::startTask in
Worker::startConnector
Signed-off-by: Greg Harris <gr...@confluent.io>
*Summary of testing strategy (including rationale)
for the feature or bug fix. Unit and/or integration
tests are expected for any behaviour change and
system tests should be considered for larger changes.*
### Committer Checklist (excluded from commit message)
- [ ] Verify design and implementation
- [ ] Verify test coverage and CI build status
- [ ] Verify documentation (including upgrade notes)
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> Connector does not prefer to use packaged classes during configuration
> ----------------------------------------------------------------------
>
> Key: KAFKA-9708
> URL: https://issues.apache.org/jira/browse/KAFKA-9708
> Project: Kafka
> Issue Type: Bug
> Components: KafkaConnect
> Reporter: Greg Harris
> Assignee: Greg Harris
> Priority: Major
>
> In connector tasks, classes loaded during configuration are preferentially
> loaded from the PluginClassLoader since KAFKA-8819 was implemented. This same
> prioritization is not currently respected in the connector itself, where the
> delegating classloader is used as the context classloader. This leads to the
> possibility for different versions of converters to be loaded, or different
> versions of dependencies to be found when executing code in the connector vs
> task.
> Worker::startConnector should be changed to follow the startTask / KAFKA-8819
> prioritization scheme, by activating the PluginClassLoader earlier.
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