What do you mean when you say Avro doesn't let you "cleanly update or track schema"? From what I've read about Avro 1. It can transform data between two compat

What do you mean when you say Avro doesn't let you "cleanly update or track schema"? From what I've read about Avro 1. It can transform data between two compatible schemas. 2. It can serialize/load schemas off the wire, so you can send the schema in the header. If schema serialization causes too much overhead, you can set things up so you only send the schema version identifier, as long as the receiver can use that to get access to the full schema.