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https://issues.apache.org/jira/browse/KAFKA-5204?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16770565#comment-16770565
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Matthias J. Sax commented on KAFKA-5204:
----------------------------------------
Moving all major/minor/trivial tickets that are not merged yet out of 2.2
release.
> Connect needs to validate Connector type during instantiation
> -------------------------------------------------------------
>
> Key: KAFKA-5204
> URL: https://issues.apache.org/jira/browse/KAFKA-5204
> Project: Kafka
> Issue Type: Bug
> Components: KafkaConnect
> Affects Versions: 0.10.2.0
> Reporter: Konstantine Karantasis
> Assignee: Konstantine Karantasis
> Priority: Major
> Fix For: 2.2.0
>
> Original Estimate: 24h
> Remaining Estimate: 24h
>
> Currently Connect will accept to instantiate connectors that extend the
> {{Connector}} abstract class but not one of its subclasses,
> {{SourceConnector}} or {{SinkConnector}}.
> However, in distributed mode as well as in REST, Connect assumes in a few
> places that there are only two types of connectors, sinks or sources. Based
> on this assumption it checks the type dynamically, and if it is not a sink it
> treats it as a source (by constructing the corresponding configs).
> A connector that implements only the {{Connector}} abstract class does not
> fit into this classification. Therefore a validation needs to take place
> early, during the instantiation of the {{Connector}} object.
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