viirya commented on code in PR #53276:
URL: https://github.com/apache/spark/pull/53276#discussion_r2604054764
##########
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/v2/V2ScanRelationPushDown.scala:
##########
@@ -318,6 +321,139 @@ object V2ScanRelationPushDown extends Rule[LogicalPlan]
with PredicateHelper {
case agg: Aggregate => rewriteAggregate(agg)
}
+ def pushDownVariants(plan: LogicalPlan): LogicalPlan = plan.transformDown {
+ case p@PhysicalOperation(projectList, filters, sHolder @
ScanBuilderHolder(_, _,
+ builder: SupportsPushDownVariantExtractions))
+ if
conf.getConf(org.apache.spark.sql.internal.SQLConf.PUSH_VARIANT_INTO_SCAN) =>
+ pushVariantExtractions(p, projectList, filters, sHolder, builder)
+ }
+
+ /**
+ * Converts an ordinal path to a field name path.
+ *
+ * @param structType The top-level struct type
+ * @param ordinals The ordinal path (e.g., [1, 1] for nested.field)
+ * @return The field name path (e.g., ["nested", "field"])
+ */
+ private def getColumnName(structType: StructType, ordinals: Seq[Int]):
Seq[String] = {
+ ordinals match {
+ case Seq() =>
+ // Base case: no more ordinals
+ Seq.empty
+ case ordinal +: rest =>
+ // Get the field at this ordinal
+ val field = structType.fields(ordinal)
+ if (rest.isEmpty) {
+ // Last ordinal in the path
+ Seq(field.name)
+ } else {
+ // Recurse into nested struct
+ field.dataType match {
+ case nestedStruct: StructType =>
+ field.name +: getColumnName(nestedStruct, rest)
+ case _ =>
+ throw new IllegalArgumentException(
Review Comment:
You mean `SparkException.internalError`, right?
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