rangadi commented on code in PR #38922:
URL: https://github.com/apache/spark/pull/38922#discussion_r1044064987
##########
connector/protobuf/src/main/scala/org/apache/spark/sql/protobuf/utils/ProtobufOptions.scala:
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@@ -38,6 +38,12 @@ private[sql] class ProtobufOptions(
val parseMode: ParseMode =
parameters.get("mode").map(ParseMode.fromString).getOrElse(FailFastMode)
+
+ val circularReferenceType: String =
parameters.getOrElse("circularReferenceType", "FIELD_NAME")
Review Comment:
> we would fail to detect the recursion for above because the thread would be
Why would we fail? Lets say this is doing `from_protobuf(col, 'message_A')`
`A aa = 1` at line 5 would be treated as recursion.
Why are field names relevant at all?
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