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ASF GitHub Bot commented on AVRO-1340: -------------------------------------- bellemare commented on a change in pull request #298: AVRO-1340: Added Enum Defaults and unit tests. URL: https://github.com/apache/avro/pull/298#discussion_r174841826 ########## File path: lang/java/avro/src/main/java/org/apache/avro/Schema.java ########## @@ -1450,7 +1473,7 @@ private static Schema applyAliases(Schema s, Map<Schema,Schema> seen, case ENUM: if (aliases.containsKey(name)) result = Schema.createEnum(aliases.get(name).full, s.getDoc(), null, - s.getEnumSymbols()); + s.getEnumSymbols(), s.getEnumDefault()); Review comment: Okay yes, I can add that to this PR. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org > use default to allow old readers to specify default enum value when > encountering new enum symbols > ------------------------------------------------------------------------------------------------- > > Key: AVRO-1340 > URL: https://issues.apache.org/jira/browse/AVRO-1340 > Project: Avro > Issue Type: Improvement > Components: spec > Environment: N/A > Reporter: Jim Donofrio > Priority: Minor > > The schema resolution page says: > > if both are enums: > > if the writer's symbol is not present in the reader's enum, then an > error is signalled. > This makes it difficult to use enum's because you can never add a enum value > and keep old reader's compatible. Why not use the default option to refer to > one of enum values so that when a old reader encounters a enum ordinal it > does not recognize, it can default to the optional schema provided one. If > the old schema does not provide a default then the older reader can continue > to fail as it does today. -- This message was sent by Atlassian JIRA (v7.6.3#76005)