[jira] [Commented] (AVRO-3649) [JAVA] reorder union types to match default value

["ASF subversion and git services (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/AVRO-3649?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17654472#comment-17654472 ] 

ASF subversion and git services commented on AVRO-3649:
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Commit c28dbe9f7d485f5e5d1df41df1bb2c12c838b5db in avro's branch refs/heads/master from Christophe Le Saec
[ https://gitbox.apache.org/repos/asf?p=avro.git;h=c28dbe9f7 ]

AVRO-3649: default for union inside union


> [JAVA] reorder union types to match default value
> -------------------------------------------------
>
>                 Key: AVRO-3649
>                 URL: https://issues.apache.org/jira/browse/AVRO-3649
>             Project: Apache Avro
>          Issue Type: Improvement
>            Reporter: Daniel Heinrich
>            Assignee: Christophe Le Saec
>            Priority: Trivial
>              Labels: pull-request-available
>          Time Spent: 3.5h
>  Remaining Estimate: 0h
>
> The Avro specification requires that a default value matches the first schema of a union type.
>  
> Using @Nullable on a field will return a union type of the form ["null", "<something>"].
> @Nullable also sets the default value to "null".
>  
> It is not possible to override this default value w{color:#172b4d}ith @AvroDefault because of the order of the schemas in the generated union.{color}
>  
> It would be nice that union types are automatically reordered to match the type of the provided default value.



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