Github user mallman commented on a diff in the pull request:
https://github.com/apache/spark/pull/22880#discussion_r229654276
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/parquet/ParquetRowConverter.scala
---
@@ -202,11 +204,15 @@ private[parquet] class ParquetRowConverter(
override def start(): Unit = {
var i = 0
- while (i < currentRow.numFields) {
+ while (i < fieldConverters.length) {
fieldConverters(i).updater.start()
currentRow.setNullAt(i)
--- End diff --
Yes. The following while loop at
https://github.com/apache/spark/blob/6b19f579e5424b5a8c16d6817c5a59b9828efec2/sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/parquet/ParquetRowConverter.scala#L212-L215
ensures all remaining columns/fields in the current row are nulled-out.
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