[KAFKA-9014] AssertionError thrown by SourceRecordWriteCounter when SourceTask.poll returns an empty list

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.2.0
• Fix Version/s: 1.0.3, 1.1.2, 2.0.2, 2.1.2, 2.2.2, 2.4.0, 2.3.1, 2.5.0
• Component/s: connect
• Flags: Patch
• Assignee: Konstantine Karantasis
• Reporter: Richard Wise
• Reviewer: Randall Hauch
• Created: 10/Oct/19 10:55
• Updated: 16/Oct/19 01:10
• Resolved: 15/Oct/19 21:51

Description

When creating a custom SourceConnectorTask where the implementation of `poll()` returns an empty List, the connector crashes with an AssertionError.

Issue Links

• links to: GitHub Pull Request #7491