xxchan commented on PR #3051:
URL: https://github.com/apache/avro/pull/3051#issuecomment-2254908712
@KalleOlaviNiemitalo I've tested with the java lib. And `"NaN"` is allowed,
but not `NaN`
```java
final String schemaString = "{\"type\" : \"record\", \"name\" : \"R\",\n"
+ " \"fields\" : [ \n {\"name\" : \"f\", \"type\" : \"float\",
\"default\": \"NaN\"}]}";
final Schema schema = new Schema.Parser().parse(schemaString);
```
Note that this is handled inside jackason:
- `"NaN"` is parsed into a `DoubleNode`, and `isNumber` returns `true` in
`isValidDefault` you linked.
- On the contrary, `NaN` will returns exception:
```
org.apache.avro.SchemaParseException:
com.fasterxml.jackson.core.JsonParseException: Non-standard token 'NaN': enable
`JsonReadFeature.ALLOW_NON_NUMERIC_NUMBERS` to allow
```
Anyway, thanks for pointing out that Avro IDL is a different thing. I should
have tested with the java lib directly at the beginning :)
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