Chris Egerton created KAFKA-9046:
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Summary: Connect worker configs require undocumented 'admin.'
prefix to configure DLQ for connectors
Key: KAFKA-9046
URL: https://issues.apache.org/jira/browse/KAFKA-9046
Project: Kafka
Issue Type: Bug
Components: KafkaConnect
Affects Versions: 2.3.0, 2.4.0, 2.3.1
Reporter: Chris Egerton
Assignee: Chris Egerton
The changes for KAFKA-8265 involved [adding a prefix of "admin." to Connect
worker
configs|https://github.com/apache/kafka/pull/6624/files#diff-316d2c222b623ee65e8065863bf4b9ceR606]
that would be used to configure the admin client that's used for connector
DLQs. However, this was never documented in the [corresponding
KIP|https://cwiki.apache.org/confluence/display/KAFKA/KIP-458%3A+Connector+Client+Config+Override+Policy]
and has broken backwards compatibility with prior Connect releases since
workers without the necessary {{"admin."}}-prefixed properties in their
configuration files will now fail in some circumstances (e.g., when interacting
with a secured Kafka cluster that requires authentication from all admin
clients that interact with it).
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