wayneguow commented on code in PR #47458:
URL: https://github.com/apache/spark/pull/47458#discussion_r1687498861
##########
connector/protobuf/src/main/scala/org/apache/spark/sql/protobuf/utils/SchemaConverters.scala:
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@@ -176,16 +176,16 @@ object SchemaConverters extends Logging {
}
case MESSAGE =>
// If the `recursive.fields.max.depth` value is not specified, it will
default to -1,
- // and recursive fields are not permitted. Setting it to 0 drops all
recursive fields,
- // 1 allows it to be recursed once, and 2 allows it to be recursed
twice and so on.
- // A value greater than 10 is not allowed, and if a protobuf record
has more depth for
- // recursive fields than the allowed value, it will be truncated and
some fields may be
- // discarded.
+ // and recursive fields are not permitted. Setting it to 1 drops all
recursive fields,
+ // 2 allows it to be recursed once, and 3 allows it to be recursed
twice and so on.
+ // A value less than or equal to 0 or greater than 10 is not allowed,
and if a protobuf
+ // record has more depth for recursive fields than the allowed value,
it will be truncated
+ // and some fields may be discarded.
// SQL Schema for protob2uf `message Person { string name = 1; Person
bff = 2;}`
// will vary based on the value of "recursive.fields.max.depth".
Review Comment:
Current code implementation as belows
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