On 07/27/2011 03:24 AM, Giancarlo Frison wrote: > I'm wondering if it's possible to load stored records with extends schemas. > If I store a record with 3 fields, is it possible by any chance to load > it by an extended schema definition (for instance with one field more)? > I tried it but the serialized record is unreadable by the newest schema. > What I can do to accomplish this purpose?
The best practice is to store the schema used to write the data with the data, or to store a reference to that schema with the data. For example, in a database, you might have a table containing Avro-format binary objects, each prefixed by an integer that identifies the schema of the object. The schemas would be stored in a separate table in the same database, keyed by that integer. Doug
