cloud-fan commented on a change in pull request #33108:
URL: https://github.com/apache/spark/pull/33108#discussion_r660240374
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File path: sql/core/src/main/scala/org/apache/spark/sql/execution/Columnar.scala
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@@ -264,12 +264,12 @@ private object RowToColumnConverter {
case DoubleType => DoubleConverter
case StringType => StringConverter
case CalendarIntervalType => CalendarConverter
- case at: ArrayType => new
ArrayConverter(getConverterForType(at.elementType, nullable))
+ case at: ArrayType => ArrayConverter(getConverterForType(at.elementType,
at.containsNull))
case st: StructType => new StructConverter(st.fields.map(
(f) => getConverterForType(f.dataType, f.nullable)))
case dt: DecimalType => new DecimalConverter(dt)
- case mt: MapType => new MapConverter(getConverterForType(mt.keyType,
nullable),
- getConverterForType(mt.valueType, nullable))
+ case mt: MapType => MapConverter(getConverterForType(mt.keyType,
nullable = false),
+ getConverterForType(mt.valueType, mt.valueContainsNull))
Review comment:
if the map itself is null, I think we won't invoke the converter?
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