viirya commented on a change in pull request #26512: [WIP][SPARK-29493][SQL]
Arrow MapType support
URL: https://github.com/apache/spark/pull/26512#discussion_r349460054
##########
File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/arrow/ArrowWriter.scala
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@@ -343,3 +348,36 @@ private[arrow] class StructWriter(
children.foreach(_.reset())
}
}
+
+private[arrow] class MapWriter(val valueVector: MapVector,
+ val keyWriter: ArrowFieldWriter,
+ val valueWriter: ArrowFieldWriter) extends
ArrowFieldWriter {
+
+ override def setNull(): Unit = {}
Review comment:
can't we set null for a map vector?
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