CloudEvents prefix for extension attributes in Kafka headers

[pdalbora]

The Java SDK does not currently prefix extension attributes with "ce_" in the headers.

Section 3.2.3.1 of the specification for Kafka Protocol Binding states that "CloudEvent attributes are prefixed with ce_ for use in the message-headers section." While the specification does not explicitly state either way whether this applies also to extension attributes, I can't see a good reason why they would be treated differently.

Is the different treatment of extension attributes in the SDK intentional, or do you agree that they should also be prefixed with "ce_"?

[fabiojose]

We aggree @pdalbora, they must be prefixed.

[bsideup]

Is there some soft of a TCK for the spec?

[slinkydeveloper]

I think this one should work with 2.0.0-SNAPSHOT, reopen if you need it