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The following commit(s) were added to refs/heads/master by this push:
     new b763db3  [SPARK-35194][SQL][FOLLOWUP] Recover build error with Scala 
2.13 on GA
b763db3 is described below

commit b763db3efdd6a58e34c136b03426371400afefd1
Author: Kousuke Saruta <saru...@oss.nttdata.com>
AuthorDate: Sat May 29 00:11:16 2021 +0900

    [SPARK-35194][SQL][FOLLOWUP] Recover build error with Scala 2.13 on GA
    
    ### What changes were proposed in this pull request?
    
    This PR fixes a build error with Scala 2.13 on GA.
    #32301 seems to bring this error.
    
    ### Why are the changes needed?
    
    To recover CI.
    
    ### Does this PR introduce _any_ user-facing change?
    
    No.
    
    ### How was this patch tested?
    
    GA
    
    Closes #32696 from sarutak/followup-SPARK-35194.
    
    Authored-by: Kousuke Saruta <saru...@oss.nttdata.com>
    Signed-off-by: Kousuke Saruta <saru...@oss.nttdata.com>
---
 .../org/apache/spark/sql/catalyst/optimizer/NestedColumnAliasing.scala | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git 
a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/NestedColumnAliasing.scala
 
b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/NestedColumnAliasing.scala
index cd7032d..e0e8f92 100644
--- 
a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/NestedColumnAliasing.scala
+++ 
b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/NestedColumnAliasing.scala
@@ -146,7 +146,8 @@ object NestedColumnAliasing {
     val nestedFieldToAlias = 
attributeToExtractValuesAndAliases.values.flatten.toMap
 
     // A reference attribute can have multiple aliases for nested fields.
-    val attrToAliases = 
AttributeMap(attributeToExtractValuesAndAliases.mapValues(_.map(_._2)))
+    val attrToAliases =
+      
AttributeMap(attributeToExtractValuesAndAliases.mapValues(_.map(_._2)).toSeq)
 
     plan match {
       case Project(projectList, child) =>

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