cashmand commented on code in PR #43984:
URL: https://github.com/apache/spark/pull/43984#discussion_r1403906938


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sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/parquet/ParquetRowConverter.scala:
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@@ -498,6 +498,9 @@ private[parquet] class ParquetRowConverter(
           int96RebaseSpec,
           wrappedUpdater)
 
+      case t: VariantType =>

Review Comment:
   I think because the vectorized parquet reader is used by default, and I 
guess the vectorized reader doesn't use these converters. I had to set 
`PARQUET_VECTORIZED_READER_ENABLED` to false in the unit test to trigger the 
failure that this part of the change fixes.



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