Konstantine Karantasis created KAFKA-5204:
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Summary: 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
Fix For: 0.11.0.0, 0.10.2.1
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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