xkrogen commented on a change in pull request #33308:
URL: https://github.com/apache/spark/pull/33308#discussion_r672589300
##########
File path:
external/avro/src/main/scala/org/apache/spark/sql/avro/AvroUtils.scala
##########
@@ -228,6 +236,38 @@ private[sql] object AvroUtils extends Logging {
.groupBy(_.name.toLowerCase(Locale.ROOT))
.mapValues(_.toSeq) // toSeq needed for scala 2.13
+ private[this] val fieldPairs = catalystSchema
+ .zipWithIndex
+ .map(fieldWithPos => (fieldWithPos, getAvroField(fieldWithPos._1.name,
fieldWithPos._2)))
+
+ /**
+ * Get the fields which have matching equivalents in both Avro and
Catalyst schemas.
+ *
+ * @return A sequence of `(catalystField, catalystPosition, avroField)`
tuples.
+ */
+ def getMatchedFields: Seq[(StructField, Int, Schema.Field)] =
fieldPairs.flatMap {
Review comment:
Great suggestion, thanks!
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