[jira] [Commented] (SPARK-32871) Append toMap to Map#filterKeys if the result of filter is concatenated with another Map

["Apache Spark (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-32871?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17195110#comment-17195110 ] 

Apache Spark commented on SPARK-32871:
--------------------------------------

User 'sarutak' has created a pull request for this issue:
https://github.com/apache/spark/pull/29742

> Append toMap to Map#filterKeys if the result of filter is concatenated with another Map
> ---------------------------------------------------------------------------------------
>
>                 Key: SPARK-32871
>                 URL: https://issues.apache.org/jira/browse/SPARK-32871
>             Project: Spark
>          Issue Type: Sub-task
>          Components: Build
>    Affects Versions: 3.1.0
>            Reporter: Kousuke Saruta
>            Assignee: Kousuke Saruta
>            Priority: Minor
>
> As of Scala 2.13, Map#filterKeys return a MapView, not the original Map type.
> This can cause compile error.
> {code:java}
> /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) {code}



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