Github user yhuai commented on a diff in the pull request:
https://github.com/apache/spark/pull/4792#discussion_r25533640
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/parquet/newParquet.scala ---
@@ -483,16 +487,42 @@ private[sql] case class ParquetRelation2(
val requiredPartOrdinal = partitionKeyLocations.keys.toSeq
- iterator.map { pair =>
- val row = pair._2.asInstanceOf[SpecificMutableRow]
- var i = 0
- while (i < requiredPartOrdinal.size) {
- // TODO Avoids boxing cost here!
- val partOrdinal = requiredPartOrdinal(i)
- row.update(partitionKeyLocations(partOrdinal),
partValues(partOrdinal))
- i += 1
+ if (primitiveRow) {
+ iterator.map { pair =>
+ // We are using CatalystPrimitiveRowConverter and it returns a
SpecificMutableRow.
+ val row = pair._2.asInstanceOf[SpecificMutableRow]
+ var i = 0
+ while (i < requiredPartOrdinal.size) {
+ // TODO Avoids boxing cost here!
+ val partOrdinal = requiredPartOrdinal(i)
+ row.update(partitionKeyLocations(partOrdinal),
partValues(partOrdinal))
+ i += 1
+ }
+ row
+ }
+ } else {
+ // Create a mutable row since we need to fill in values from
partition columns.
+ val mutableRow = new GenericMutableRow(requestedSchema.size)
--- End diff --
Seems it will be safer if we get `requestedSchema.size` out side of
`mapPartitionsWithInputSplit`.
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