[BEAM-2486] Should throws some useful messages when statefulParDo use non-KV input

• Type: Improvement
• Status: Resolved
• Priority: P2
• Resolution: Fixed
• Fix Version/s: 2.1.0
• Component/s: runner-core, runner-flink
• Assignee: Kenneth Knowles
• Reporter: Jingsong Lee
• Created: 21/Jun/17 02:29
• Updated: 16/May/20 13:34
• Resolved: 10/Jul/17 03:40

Description

Now Flink runner will throws a ClassCastException without detail messages when a statefulParDo use non-KV input. It is not easy for users to find errors and causes.

Issue Links

• links to: GitHub Pull Request #3502
• links to: GitHub Pull Request #3519