[FLINK-25932] Introduce ExecNodeContext.generateUid()

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.15.0
• Component/s: Table SQL / Planner
• Labels: pull-request-available
• Assignee: Francesco Guardiani
• Reporter: Timo Walther
• Created: 02/Feb/22 17:17
• Updated: 09/Sep/22 08:03
• Resolved: 08/Feb/22 15:23

Description

FLINK-25387 introduced an ExecNodeContext which contains all information to generate unique and deterministic identifiers for all created Transformation.

This issue includes:

• Add ExecNodeContext.generateUid(operatorName: String): String
• Go through all ExecNodes and give transformations a uid. The name can be constant static field within the ExecNode such that both annotation and method can use it.
• We give all transformations a uid, including stateless ones.
• The final UID should look like: 13_stream-exec-sink_1_upsert-materializer

Issue Links

• links to: GitHub Pull Request #18621