SandishKumarHN commented on code in PR #38922:
URL: https://github.com/apache/spark/pull/38922#discussion_r1049175487


##########
connector/protobuf/src/main/scala/org/apache/spark/sql/protobuf/utils/SchemaConverters.scala:
##########
@@ -92,14 +106,26 @@ object SchemaConverters {
             MapType(keyType, valueType, valueContainsNull = 
false).defaultConcreteType,
             nullable = false))
       case MESSAGE =>
-        if (existingRecordNames.contains(fd.getFullName)) {
+        // Setting the circularReferenceDepth to 0 allows the field to be 
recursed once, setting
+        // it to 1 allows it to be recursed twice, and setting it to 2 allows 
it to be recursed
+        // thrice. circularReferenceDepth value greater than 2 is not allowed. 
If the not
+        // specified, it will default to -1, which disables recursive fields.
+        val recordName = fd.getMessageType.getFullName
+        if (existingRecordNames.contains(recordName) &&

Review Comment:
   @rangadi thanks for the review, I have made all changes you suggested.



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