[KAFKA-16392] Spurious log warnings: "Ignoring offset partition key with an unexpected format for the second element in the partition key list. Expected type: java.util.Map, actual type: null"

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 3.5.0, 3.6.0, 3.5.1, 3.5.2, 3.7.0, 3.6.1, 3.8.0
• Fix Version/s: 3.6.2, 3.8.0, 3.7.1
• Component/s: connect
• Assignee: Chris Egerton
• Reporter: Chris Egerton
• Created: 20/Mar/24 13:41
• Updated: 26/Mar/24 12:11
• Resolved: 25/Mar/24 11:40

Description

Some source connectors choose not to specify source offsets with the records they emit (or rather, to provide null partitions/offsets). When these partitions are parsed by a Kafka Connect worker, this currently leads to a spurious warning log message.

Issue Links

• is duplicated by: KAFKA-16423 Ignoring offset partition key with an unexpected format for the first element in the partition key list. Expected type: java.lang.String, actual type: null"
• links to: GitHub Pull Request #15562