[SPARK-32871] Append toMap to Map#filterKeys if the result of filter is concatenated with another Map for Scala 2.13

• Type: Sub-task
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 3.1.0
• Fix Version/s: 3.1.0
• Component/s: Build
• Assignee: Kousuke Saruta
• Reporter: Kousuke Saruta
• Created: 13/Sep/20 19:34
• Updated: 12/Dec/22 18:10
• Resolved: 15/Sep/20 00:28

Description

As of Scala 2.13, Map#filterKeys return a MapView, not the original Map type.
This can cause compile error.

/sql/DataFrameReader.scala:279: type mismatch;
[error]  found   : Iterable[(String, String)]
[error]  required: java.util.Map[String,String]
[error] Error occurred in an application involving default arguments.
[error]       val dsOptions = new CaseInsensitiveStringMap(finalOptions.asJava) 

Issue Links

• is duplicated by: SPARK-32454 Fix HistoryServerSuite in Scala 2.13
• links to: [Github] Pull Request #29742 (sarutak)