[FLINK-18069] Scaladocs not building since inner Java interfaces cannot be recognized

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 1.11.0
• Component/s: API / Scala, Documentation
• Labels: pull-request-available
• Assignee: Tzu-Li (Gordon) Tai
• Reporter: Tzu-Li (Gordon) Tai
• Created: 02/Jun/20 12:35
• Updated: 05/Jun/20 08:59
• Resolved: 05/Jun/20 08:08

Description

Error:

/home/buildslave/slave/flink-docs-master/build/flink-scala/src/main/java/org/apache/flink/api/scala/typeutils/Tuple2CaseClassSerializerSnapshot.java:98: error: not found: type OuterSchemaCompatibility
	protected OuterSchemaCompatibility resolveOuterSchemaCompatibility(ScalaCaseClassSerializer<Tuple2<T1, T2>> newSerializer) {
                  ^
/home/buildslave/slave/flink-docs-master/build/flink-scala/src/main/java/org/apache/flink/api/scala/typeutils/TraversableSerializerSnapshot.java:101: error: not found: type OuterSchemaCompatibility
	protected OuterSchemaCompatibility resolveOuterSchemaCompatibility(TraversableSerializer<T, E> newSerializer) {
                  ^
/home/buildslave/slave/flink-docs-master/build/flink-scala/src/main/java/org/apache/flink/api/scala/typeutils/ScalaCaseClassSerializerSnapshot.java:106: error: not found: type OuterSchemaCompatibility
	protected OuterSchemaCompatibility resolveOuterSchemaCompatibility(ScalaCaseClassSerializer<T> newSerializer) {
                  ^

This is a similar issue as reported here: https://github.com/scala/bug/issues/10509.

This seems to be a problem with Scala 2.12.x. The only workaround is to
redundantly add the full-length qualifiers for such interfaces.

Issue Links

• links to: GitHub Pull Request #12443
• links to: GitHub Pull Request #12447