[FLINK-27510] update playgrounds for Flink 1.15

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Implemented
• Affects Version/s: 1.15.0
• Fix Version/s: 1.15.2
• Component/s: Documentation / Training / Exercises
• Labels: auto-deprioritized-major starter
• Assignee: Roy Michael
• Reporter: David Anderson
• Created: 05/May/22 18:41
• Updated: 19/Sep/22 23:50
• Resolved: 19/Sep/22 23:50

Description

All of the playgrounds should be updated for Flink 1.15. This should include reworking the code as necessary to avoid using anything that has been deprecated.

It would be best to first perform the updates for 1.14, so that APIs newly deprecated in 1.14 can be fixed first.

Issue Links

• requires: FLINK-27506 update playgrounds for Flink 1.14