[jira] [Created] (SPARK-37800) TreeNode.argString incorrectly formats arguments of type Set[_]

["Simeon Simeonov (Jira)" <ji...@apache.org>]

Simeon Simeonov created SPARK-37800:
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             Summary: TreeNode.argString incorrectly formats arguments of type Set[_]
                 Key: SPARK-37800
                 URL: https://issues.apache.org/jira/browse/SPARK-37800
             Project: Spark
          Issue Type: Bug
          Components: Spark Core
    Affects Versions: 3.2.0
            Reporter: Simeon Simeonov


The implementation of {{argString}} uses the following pattern for sets:

 
{code:java}
case set: Set[_] =>
  // Sort elements for deterministic behaviours
  val sortedSeq = set.toSeq.map(formatArg(_, maxFields).sorted)                                                              
  truncatedString(sortedSeq, "{", ", ", "}", maxFields) :: Nil {code}
Instead of sorting the elements of the set, the implementation sorts the characters of the strings that {{formatArg}} returns. 

The fix is simply to move the closing parenthesis to the correct location:
{code:java}
  val sortedSeq = set.toSeq.map(formatArg(_, maxFields)).sorted
{code}
 



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