Github user chenghao-intel commented on a diff in the pull request:

    https://github.com/apache/spark/pull/4289#discussion_r24221959
  
    --- Diff: 
sql/hive/src/main/scala/org/apache/spark/sql/hive/TableReader.scala ---
    @@ -264,15 +268,31 @@ private[hive] object HadoopTableReader extends 
HiveInspectors {
        * @param nonPartitionKeyAttrs Attributes that should be filled together 
with their corresponding
        *                             positions in the output schema
        * @param mutableRow A reusable `MutableRow` that should be filled
    +   * @param convertdeserializer The `Deserializer` covert the 
`deserializer`                
        * @return An `Iterator[Row]` transformed from `iterator`
        */
       def fillObject(
           iterator: Iterator[Writable],
           deserializer: Deserializer,
           nonPartitionKeyAttrs: Seq[(Attribute, Int)],
    -      mutableRow: MutableRow): Iterator[Row] = {
    +      mutableRow: MutableRow,
    +      convertdeserializer: Option[Deserializer] = None): Iterator[Row] = {
    --- End diff --
    
    Change the `convertdeserializer` to `outputStructObjectInspector`?


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