markfarnan commented on PR #2014:
URL: https://github.com/apache/avro/pull/2014#issuecomment-1355729169
Found a problem.
The order the Schema's given to parse_list seems to matter. If they are
passed in descending order of reference, everything works.
If they are passed out of order for references to resolve forward, then
avro_to_datum_schemata panics. (Parse List seems to manage fine with any order)
i.e. if you modify your test thus:, it will panic.
` let schemata: Vec<Schema> = Schema::parse_list(&[SCHEMA_B_STR,
SCHEMA_A_STR]).unwrap();
let schemata: Vec<&Schema> = schemata.iter().collect();
// this is the Schema we want to use for write/read
let schema_b = schemata[0];`
This will be a problem with large schema's. For my use case some Records
have references that use up to 20+ schema's, guarenteeing they are provided in
the right order would be a nightmare.
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