[KAFKA-14067] Sink connector override.consumer.group.id can conflict with worker group.id

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.3.0
• Fix Version/s: 3.7.0
• Component/s: connect
• Assignee: Unassigned
• Reporter: Greg Harris
• Created: 11/Jul/22 19:33
• Updated: 12/Sep/23 09:48
• Resolved: 12/Sep/23 09:48

Description

Currently there is a validation step for connector names which prevents sink connector consumer groups from colliding with the worker group.id.

There is currently no such validation for consumer.override.group.id that would prevent a conflicting connector from being configured, and so it is possible to misconfigure a connector in a way that may be damaging to the workers themselves.

Reproduction steps:
1. Configure a connect distributed cluster with a certain group.id in the worker config.
2. Configure a sink connector with consumer.override.group.id having the same value as in the worker config

Expected behavior:
1. An error is returned indicating that the consumer.override.group.id is invalid
2. The connector is not created or started

Actual behavior:
1. No error is returned, and the configuration is otherwise valid.
2. The connector is created and starts running.

Issue Links

• is related to: KAFKA-3829 Warn that kafka-connect group.id must not conflict with connector names