[
https://issues.apache.org/jira/browse/AVRO-1340?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16459908#comment-16459908
]
ASF GitHub Bot commented on AVRO-1340:
--------------------------------------
bellemare commented on issue #298: AVRO-1340: Added Enum Defaults and unit
tests.
URL: https://github.com/apache/avro/pull/298#issuecomment-385735723
My preference is to always impose a minimal change centered around the
functionality. In this case I would prefer to leave the @default behaviour as
it currently is except for changing it for enum. That being said, I would be
happy to file a bug ticket for it as a separate fix - that way if there is a
bunch of issues with it that it would be addressable on its own and not affect
this commit.
----------------------------------------------------------------
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)
