[FLINK-9942] Guard handlers against null fields in requests

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.5.0, 1.6.0
• Fix Version/s: 1.5.3, 1.6.0
• Component/s: Runtime / REST
• Labels: pull-request-available
• Assignee: Chesnay Schepler
• Reporter: Chesnay Schepler
• Created: 25/Jul/18 06:27
• Updated: 27/Jul/18 10:39
• Resolved: 27/Jul/18 10:38

Description

In FLINK-8233 the ObjectMapper used for the REST API was modified to not fail on missing creator properties. This means that any field for any request may be null.

Since fields not being null was an assumption that handlers were previously built on, we now have to scan every implementation to ensure they can't fail with an NPE.

Issue Links

• links to: GitHub Pull Request #6416
• links to: GitHub Pull Request #6416