[KAFKA-4878] Kafka Connect does not log connector configuration errors

• Type: Bug
• Status: Resolved
• Priority: Blocker
• Resolution: Fixed
• Fix Version/s: 0.10.2.1, 0.11.0.0
• Assignee: Armin Braun
• Reporter: Gwen Shapira
• Created: 09/Mar/17 22:23
• Updated: 03/Apr/17 20:10
• Resolved: 03/Apr/17 20:10

Description

Currently, on connector configuration error, Kafka Connect (both distributed and stand alone) logs:
org.apache.kafka.connect.runtime.rest.errors.BadRequestException: Connector configuration is invalid (use the endpoint `/

{connectorType}

/config/validate` to get a full list of errors)

This is annoying because:
1. If I'm using stand-alone mode, I may have configured my connector via configuration file and I don't want to know about the REST API at all.
2. The output of validate is rather annoying

What I'd like to see in the output is:
1. number of errors in my configuration
2. at least one error, preferably all of them

Issue Links

• links to: GitHub Pull Request #2722