Till Rohrmann created FLINK-6801: ------------------------------------ Summary: PojoSerializerConfigSnapshot cannot deal with missing Pojo fields Key: FLINK-6801 URL: https://issues.apache.org/jira/browse/FLINK-6801 Project: Flink Issue Type: Bug Components: Type Serialization System Affects Versions: 1.3.0, 1.4.0 Reporter: Till Rohrmann
The {{PojoSerializerConfigSnapshot}} tries to deserialize Pojo {{Fields}}. If the underlying Pojo class changed such that a formerly present field is not longer part of the Pojo, then the deserialization of the {{PojoSerializerConfigSnapshot}} will fail. As a consequence of this failure, there is no possibility to do state migration (e.g. skipping over this field when reading old data). I think it is better to simply store the field name in the {{PojoSerializerConfigSnapshot}} and try to resolve the fields in the {{PojoSerializer#ensureCompatibility}} method. That way it is possible to construct a ConvertDeserializer allowing for state migration. -- This message was sent by Atlassian JIRA (v6.3.15#6346)