[VL] Result mismatch using get_json_object when json input is invalid

[NEUpanning]

Backend

VL (Velox)

Bug description

Reproducing SQL: select get_json_object('{"c": "1", "a":""""}','$.c');
vanilla spark result: NULL
gluten result: 1

Perhaps, the reason is that SIMDjson parses JSON on demand, which means JSON could not be fully parsed and validated.

Gluten version

Gluten-1.3

Spark version

Spark-3.5.x

Spark configurations

No response

System information

No response

Relevant logs

[NEUpanning]

cc @philo-he

[philo-he]

Perhaps, the reason is that SIMDjson parses JSON on demand, which means JSON could not be fully parsed and validated.

@NEUpanning, I guess it's the reason. There are two kinds of parser in Simdjson. One is ondemand::parser which is used in Velox. As you know, it only parses JSON data by need, which should perform better in get_json_objest usage cases. Another is dom::parser, which parses entire JSON document for better performance in multiple random accesses. And it validates the entire JSON. If you care more about the descripted invalidate cases than performance, you can try to replace ondemand::parser with dom::parser at Velox side.