Gyula, thanks for sharing your opinion. I've created a small FLIP as asked: https://cwiki.apache.org/confluence/display/FLINK/FLIP-401%3A+REST+API+JSON+response+deserialization+unknown+field+tolerance
Let's wait on voices until beginning of next week. G On Wed, Dec 6, 2023 at 11:05 AM Gyula Fóra <gyula.f...@gmail.com> wrote: > Thanks G, I think this is a reasonable proposal which will increase > compatibility between different Flink clients and versions such as SQL > Gateway, CLI, Flink operator etc. > > I don't really see any harm in ignoring unknown json fields globally, but > this probably warrants a FLIP and a proper vote. > > Cheers, > Gyula > > On Wed, Dec 6, 2023 at 10:53 AM Gabor Somogyi <gabor.g.somo...@gmail.com> > wrote: > > > Hi All, > > > > Since the possible solution can have effect on all the REST response > > deserialization I would like > > ask for opinions. > > > > *Problem statement:* > > > > At the moment Flink is not ignoring unknown fields when parsing REST > > responses. An example for such a class is JobDetailsInfo but this applies > > to all others. It would be good to add this support to increase > > compatibility. > > > > The real life use-case is when the Flink k8s operator wants to handle 2 > > jobs with 2 different Flink versions where the newer version has added a > > new field to any REST response. Such case the operator has basically 2 > > options: > > * Use the old Flink version -> Such case exception comes because new > field > > comes but it's not expected > > * Use the new Flink version -> Such case exception comes because new > field > > is not coming but expected > > > > To hack around this issue it requires quite some ugly code parts in the > > operator. > > > > The mentioned issue is tracked here: > > https://issues.apache.org/jira/browse/FLINK-33268 > > > > *Proposed solution:* > > > > Ignore all unknown fields in case of REST response JSON deserialization. > > Important to know that strict serialization would stay the same as-is. > > > > Actual object mapper configuration can be found here: > > > > > https://github.com/apache/flink/blob/3060ccd49cc8d19634b431dbf0f09ac875d0d422/flink-runtime/src/main/java/org/apache/flink/runtime/rest/util/RestMapperUtils.java#L31-L38 > > > > Please share your opinion on this topic. > > > > BR, > > G > > >
