[jira] [Commented] (AVRO-2035) default value for boolean field cannot be a string

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[jira] [Commented] (AVRO-2035) default value for boolean field cannot be a string

JIRA jira@apache.org

    [ https://issues.apache.org/jira/browse/AVRO-2035?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16052438#comment-16052438 ]

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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