org.apache.flink.api.scala.typeutils.TrySerializer
We need to keep this to be compatible with snapshots taken in Flink 1.3.0. Once Flink 1.3.x is no longer supported, this can be removed.
We need to keep this to be compatible with snapshots taken in Flink 1.3.0. Once Flink 1.3.x is no longer supported, this can be removed.