leo-vital commented on issue #252:
URL: https://github.com/apache/avro-rs/issues/252#issuecomment-3177706143

   > You should ask this question at 
[[email protected]](mailto:[email protected]) mailing list.
   > 
   > The strip rule is described in the Avro specification - 
https://avro.apache.org/docs/1.12.0/specification/#parsing-canonical-form-for-schemas
   > 
   > ```
   > [STRIP] Keep only attributes that are relevant to parsing data, which are: 
type, name, fields, symbols, items, values, size. Strip all others (e.g., doc 
and aliases).
   > ```
   
   Thank you, I'll do that.
   
   Less about Apache Avro's internals and more about this Rust crate 
specifically, however: if we want to add an optional field to a struct whose 
schema has a previous version already being used, is it possible to do so in a 
backwards-compatible way using the `AvroSchema` derive macro? Or is writing the 
new schema version manually the only way to have that in this crate?


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