Github user sitalkedia commented on a diff in the pull request:

    https://github.com/apache/spark/pull/15064#discussion_r79201464
  
    --- Diff: 
sql/hive/src/main/scala/org/apache/spark/sql/hive/HiveInspectors.scala ---
    @@ -240,74 +240,173 @@ private[hive] trait HiveInspectors {
     
       /**
        * Wraps with Hive types based on object inspector.
    -   * TODO: Consolidate all hive OI/data interface code.
        */
       protected def wrapperFor(oi: ObjectInspector, dataType: DataType): Any 
=> Any = oi match {
    -    case _: JavaHiveVarcharObjectInspector =>
    +    case x: ConstantObjectInspector =>
           (o: Any) =>
    -        if (o != null) {
    -          val s = o.asInstanceOf[UTF8String].toString
    -          new HiveVarchar(s, s.length)
    -        } else {
    -          null
    +        x.getWritableConstantValue
    +    case x: PrimitiveObjectInspector => x match {
    +      // TODO we don't support the HiveVarcharObjectInspector yet.
    +      case _: StringObjectInspector if x.preferWritable() =>
    +        (o: Any) => getStringWritable(o)
    +      case _: StringObjectInspector =>
    +        (o: Any) => if (o != null) o.asInstanceOf[UTF8String].toString() 
else null
    +      case _: IntObjectInspector if x.preferWritable() =>
    +        (o: Any) => getIntWritable(o)
    +      case _: IntObjectInspector =>
    +        (o: Any) => if (o != null) o.asInstanceOf[java.lang.Integer] else 
null
    --- End diff --
    
    Good point, done.


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