Github user kiszk commented on a diff in the pull request:
https://github.com/apache/spark/pull/21073#discussion_r184835757
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/collectionOperations.scala
---
@@ -16,12 +16,14 @@
*/
package org.apache.spark.sql.catalyst.expressions
+import java.util
import java.util.Comparator
import org.apache.spark.sql.catalyst.InternalRow
import org.apache.spark.sql.catalyst.analysis.TypeCheckResult
import org.apache.spark.sql.catalyst.expressions.codegen._
import org.apache.spark.sql.catalyst.util.{ArrayData, GenericArrayData,
MapData, TypeUtils}
+import org.apache.spark.sql.catalyst.util.ArrayBasedMapData
--- End diff --
How about merging these two lines into one line
`org.apache.spark.sql.catalyst.util._`?
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