zcsizmadia opened a new pull request, #3070:
URL: https://github.com/apache/avro/pull/3070
## What is the purpose of the change
JsonEncoder uses special string values to represent NaN, Infinity and
-Infinity values for float and double values, but JsonDecoder does not accept
these string values. This change adds support for these special values to
JsonDecoder.
## Verifying this change
This change added tests and can be verified as follows:
* The change adds an unit tests which verifies all 6 special cases:
* `NaN` for float fields
* `NaN` for double fields
* `Infinity` for float fields
* `Infinity` for double fields
* `-Infinity` for float fields
* `-Infinity` for double fields
* These values are defined in Jackson.
[StdDeserializer](https://github.com/FasterXML/jackson-databind/blob/92181dfae2d857ed728df4a8c5ab904f9eb323c1/src/main/java/com/fasterxml/jackson/databind/deser/std/StdDeserializer.java#L1487)
## Documentation
- This PR doesn't introduce a new feature but implements a behavior which is
not documented at all.
- The Avro spec doesn't mention how these special cases are handled in JSON
([RFC 8259](https://datatracker.ietf.org/doc/html/rfc8259) does not define
numeric literals for `NaN`, `Infinity` and `-Infinity`)
- `JsonEncoder`/`JsonDecoder` resemble the behavior of Jackson
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