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https://issues.apache.org/jira/browse/AVRO-1725?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15058312#comment-15058312
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Doug Cutting commented on AVRO-1725:
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I'd vote for clarifying the spec rather than relaxing the implementation. Enum
symbols might be generated as identifiers in lots of languages, not just Java,
and, e.g., C & C++ also do not allow identifiers that start with digit
characters.
> Enum schema exhibits same restriction to enum symbols as to names
> -----------------------------------------------------------------
>
> Key: AVRO-1725
> URL: https://issues.apache.org/jira/browse/AVRO-1725
> Project: Avro
> Issue Type: Bug
> Components: java
> Affects Versions: 1.7.7
> Reporter: Nikita Makeev
>
> EnumSchema class in org.apache.avro.Schema has the following code:
> for (String symbol : symbols)
> if (ordinals.put(validateName(symbol), i++) != null)
> which validates enum symbols using validateName() which makes impossible to
> use symbols that are not conforming to standard for real names.
> That prohibits using of symbols like "" (empty string) or anything starting
> with number which does not seem to be intended.
> I guess this place requires either some another type of validation or no
> validation at all. Can provide a patch for both cases.
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