wuchong commented on a change in pull request #13763:
URL: https://github.com/apache/flink/pull/13763#discussion_r513140215
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File path:
flink-formats/flink-avro/src/main/java/org/apache/flink/formats/avro/typeutils/AvroSchemaConverter.java
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@@ -297,32 +300,53 @@ private static DataType convertToDataType(Schema schema) {
* @return Avro's {@link Schema} matching this logical type.
*/
public static Schema convertToSchema(LogicalType logicalType) {
+ // If it is parsing the root row type, switches from nullable
true to false
+ // because a nullable row type is meaningless and would
generate wrong schema.
+ if (logicalType.getTypeRoot() == LogicalTypeRoot.ROW
Review comment:
I think we can make the parameter to be `RowType`, that would make sense
to use it as the top-level row type and not generate nullable for it. Besides,
would be better to add comments in the Javadoc. Currently, this method has the
same Javadoc with `convertToSchema(LogicalType logicalType, String rowName)`.
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