[KAFKA-9707] InsertField.Key transformation should apply to tombstone records

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.0.3, 1.1.2, 2.0.2, 2.1.2, 2.2.2, 2.4.0, 2.3.1, 2.4.1
• Fix Version/s: 1.0.3, 1.1.2, 2.0.2, 2.1.2, 2.2.3, 2.5.0, 2.3.2, 2.4.2
• Component/s: KafkaConnect
• Labels: regression
• Assignee: Greg Harris
• Reporter: Greg Harris
• Created: 11/Mar/20 21:37
• Updated: 26/Mar/20 22:20
• Resolved: 26/Mar/20 22:20

Description

Note: This was an inadvertent regression caused by KAFKA-8523.

Reproduction steps:

1. Configure an InsertField.Key transformation
2. Pass a tombstone record (with non-null key, but null value) through the transform

Expected behavior:

The key field is inserted, and the value remains null

Observed behavior:

The key field is not inserted, and the value remains null

Issue Links

• fixes: KAFKA-8523 InsertField transformation fails when encountering tombstone event
• is duplicated by: KAFKA-9763 Recent changes to Connect's InsertField will fail to inject field on key of tombstone record
• links to: GitHub Pull Request #8280