[SPARK-28855] Remove outdated Experimental, Evolving annotations

• Type: Task
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 3.0.0
• Fix Version/s: 3.0.0
• Component/s: ML, Spark Core, SQL, Structured Streaming
• Target Version/s: 3.0.0
• Assignee: Sean R. Owen
• Reporter: Sean R. Owen
• Created: 22/Aug/19 13:48
• Updated: 23/Sep/19 17:24
• Resolved: 01/Sep/19 15:15

Description

The Experimental and Evolving annotations are both (like Unstable) used to express that a an API may change. However there are many things in the code that have been marked that way since even Spark 1.x. Per the dev@ thread, anything introduced at or before Spark 2.3.0 is pretty much 'stable' in that it would not change without a deprecation cycle.

Therefore I'd like to remove most of these annotations, leaving them for things that are obviously inherently experimental (ExperimentalMethods), or recently added and still legitimately experimental (DSv2, Barrier mode).

Issue Links

• links to: GitHub Pull Request #25558