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https://issues.apache.org/jira/browse/AVRO-3155?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Martin Tzvetanov Grigorov resolved AVRO-3155.
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Fix Version/s: 1.12.1
Assignee: Oscar Westra van Holthe - Kind
Resolution: Fixed
> Schema specification inconsistently describes default value for types
> ---------------------------------------------------------------------
>
> Key: AVRO-3155
> URL: https://issues.apache.org/jira/browse/AVRO-3155
> Project: Apache Avro
> Issue Type: Bug
> Affects Versions: 1.10.0, 1.10.1, 1.10.2
> Reporter: Moritz Hoffmann
> Assignee: Oscar Westra van Holthe - Kind
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.12.1
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> The Avro schema describes that types have default values, which seems to be
> inconsistent. Previously to 1.10, only fields had default values, but types
> did not. Since 1.10, the documentation for the map type states:
> For example, a map from string to long is declared with:
> {code:java}
> {
> "type": "map",
> "values" : "long",
> "default": {}
> }{code}
> Notice that the type declaration now carries a default value.
> The change was introduced with AVRO-2574. However, the parser currently
> (1.10.x) does not accept default values on types, but only on fields. The
> spec for the array type was modified in a similar fashion.
> We encountered this problem when implementing Avro support for Materialize,
> see [https://github.com/MaterializeInc/materialize/issues/6433] for a bug on
> our end.
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