[Java] Failed to serialize collections containing only null elements in xlang mode

[Handsome-cong]

Search before asking

• I had searched in the issues and found no similar issues.

Version

a37cc55

Component(s)

Java

Minimal reproduce step

Fury fury = Fury.builder().withLanguage(Language.XLANG).build();
ArrayList<String> strList = new ArrayList<>();
strList.add(null);
fury.serialize(strList);

What did you expect to see?

The correct serialization into a byte sequence, and the ability to deserialize it back into a sequence containing only nulls.

What did you see instead?

org.apache.fury.exception.ClassUnregisteredException: Class java.lang.Object is not registered

Anything Else?

Different exception is thrown when RefTracing is enabled. It seems that void and Object are not registered by XtypeResolver by default.

Are you willing to submit a PR?

• I'm willing to submit a PR!

[chaokunyang]

Hi @Handsome-cong , could you try latest code in main branch? I think it's fixed in that branch

[Handsome-cong]

HI @chaokunyang , I just tried it, and the issue is still there.