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https://issues.apache.org/jira/browse/AVRO-1057?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13253675#comment-13253675
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Christophe Taton commented on AVRO-1057:
----------------------------------------
Ah, you are right, I missed that bit.
I got confused as the IDL compiler and JSON schema currently allow bogus
declarations.
Could the IDL compiler and the schema parser check this more aggressively?
> Java builder API fails when default value does not match the first type in a
> union
> ----------------------------------------------------------------------------------
>
> Key: AVRO-1057
> URL: https://issues.apache.org/jira/browse/AVRO-1057
> Project: Avro
> Issue Type: Bug
> Components: java
> Affects Versions: 1.6.3
> Reporter: Christophe Taton
> Priority: Minor
>
> The following definition works fine with the builder:
> record Rec {
> union { boolean, null } field = false;
> }
> but this one fails:
> record Rec {
> union { boolean, null } field = null;
> }
> Rec.newBuilder().build() fails with this error:
> org.apache.avro.AvroRuntimeException: org.apache.avro.AvroTypeException:
> Non-boolean default for boolean: null
> at Rec$Builder.build
> Caused by: org.apache.avro.AvroTypeException: Non-boolean default for
> boolean: null
> at
> org.apache.avro.io.parsing.ResolvingGrammarGenerator.encode(ResolvingGrammarGenerator.java:393)
> at
> org.apache.avro.io.parsing.ResolvingGrammarGenerator.encode(ResolvingGrammarGenerator.java:350)
> at
> org.apache.avro.data.RecordBuilderBase.defaultValue(RecordBuilderBase.java:178)
> at Rec$Builder.build
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