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https://issues.apache.org/jira/browse/AVRO-2035?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16052438#comment-16052438
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Doug Cutting commented on AVRO-2035:
------------------------------------
Strings are not valid as the default value for a boolean.
The schema parser does not ordinarily validate default values, but this can be
enabled if desired.
https://avro.apache.org/docs/1.8.1/api/java/org/apache/avro/Schema.Parser.html#setValidateDefaults(boolean)
> default value for boolean field cannot be a string
> --------------------------------------------------
>
> Key: AVRO-2035
> URL: https://issues.apache.org/jira/browse/AVRO-2035
> Project: Avro
> Issue Type: Bug
> Components: java
> Affects Versions: 1.8.1
> Reporter: radai rosenblatt
>
> suppose i have the following schema evolution:
> {code}
> {
> "name": "Bob",
> "type": "record",
> "fields": [
> {"name": "f1", "type": "int"}
> ]
> }
> {code}
> and then:
> {code}
> {
> "name": "Bob",
> "type": "record",
> "fields": [
> {"name": "f1", "type": "int"},
> {"name": "f2", "type": "boolean", "default": "true"}
> ]
> }
> {code}
> the default value for "f2" is specified as the _STRING_ "true" (and not the
> literal boolean true).
> if this default value is ever accessed (when reading a gen1-serialized object
> as a gen2) we get this:
> {code}
> org.apache.avro.AvroTypeException: Non-boolean default for boolean: "true"
> at
> org.apache.avro.io.parsing.ResolvingGrammarGenerator.encode(ResolvingGrammarGenerator.java:408)
> at
> org.apache.avro.io.parsing.ResolvingGrammarGenerator.getBinary(ResolvingGrammarGenerator.java:307)
> at
> org.apache.avro.io.parsing.ResolvingGrammarGenerator.resolveRecords(ResolvingGrammarGenerator.java:285)
> at
> org.apache.avro.io.parsing.ResolvingGrammarGenerator.generate(ResolvingGrammarGenerator.java:118)
> at
> org.apache.avro.io.parsing.ResolvingGrammarGenerator.generate(ResolvingGrammarGenerator.java:50)
> at org.apache.avro.io.ResolvingDecoder.resolve(ResolvingDecoder.java:85)
> at org.apache.avro.io.ResolvingDecoder.<init>(ResolvingDecoder.java:49)
> at
> org.apache.avro.io.DecoderFactory.resolvingDecoder(DecoderFactory.java:307)
> at
> org.apache.avro.generic.GenericDatumReader.getResolver(GenericDatumReader.java:127)
> at
> org.apache.avro.generic.GenericDatumReader.read(GenericDatumReader.java:142)
> {code}
> yet Schema.parse() passes for this
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