[SPARK-38337] Replace `toIterator` with `iterator` for `IterableLike`/`IterableOnce` to cleanup deprecated api usage

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 3.3.0
• Fix Version/s: 3.3.0
• Component/s: DStreams, MLlib, Spark Core, SQL
• Assignee: Yang Jie
• Reporter: Yang Jie
• Created: 27/Feb/22 03:44
• Updated: 12/Dec/22 18:10
• Resolved: 28/Feb/22 01:18

Description

In Scala 2.12, IterableLike.toIterator identified as @deprecatedOverriding:

 

@deprecatedOverriding("toIterator should stay consistent with iterator for all Iterables: override iterator instead.", "2.11.0") 
override def toIterator: Iterator[A] = iterator 

In Scala 2.13, IterableOnce.toIterator identified as @deprecated:

@deprecated("Use .iterator instead of .toIterator", "2.13.0") @`inline` final def toIterator: Iterator[A] = iterator 

Issue Links

• links to: [Github] Pull Request #35665 (LuciferYang)