Alvaro, Petr: If I understand correctly what happens here is that some *other* column than the replica identity has a predicate with a full blown SQL function. We shouldn't evaluate arbitrary code like that inside the otuput plugin!
Not sure what you mean here, but in my case the replica identity is a regular integer primary key, without any functions as predicates in the index or anything else.
... or my schema is not the problem at all in this case ?