flink-scala-api: MappedTypeInformation hashCode ignores the mapper and adds needless collisions

Confirmed · info · API-contract bug

Type infos with the same nested type and different mappers always share a hash bucket. Lookups in hash maps degrade for those entries, but results stay correct.

Found: 2026-05-10; reported: 2026-05-10; status since: 2026-09-05. Reporter: Mike Murunov