Github user sadhen commented on the issue:
https://github.com/apache/spark/pull/22264
```
Welcome to
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/___/ .__/\_,_/_/ /_/\_\ version 2.4.0-SNAPSHOT
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Using Scala version 2.12.6 (Java HotSpot(TM) 64-Bit Server VM, Java
1.8.0_112)
Type in expressions to have them evaluated.
Type :help for more information.
scala> val rowOfDoubleWrappedArray = spark.sql("select array(cast (1.0 as
double) , cast(1.0 as double))").collect.head
rowOfDoubleWrappedArray: org.apache.spark.sql.Row = [WrappedArray(1.0, 1.0)]
scala> val rowOfIntWrappedArray = spark.sql("select array(1,
1)").collect.head
rowOfIntWrappedArray: org.apache.spark.sql.Row = [WrappedArray(1, 1)]
scala> rowOfDoubleWrappedArray == rowOfIntWrappedArray
res5: Boolean = false
```
And for Scala 2.11, the result is true.
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