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federation-jvm
v5 included a bump to a protobuf v4 version which is not ABI compatible with protobuf v3. Using protobuf v4 generates messages with a protobuf v3 service results in a runtime exception. A lot of the libraries in thegrpc
ecosystem are still stuck at v3 (includinggrpc-java
) and sincefederation-jvm
only uses protobuf to generate messages, the latestfederation-jvm
version (5.3.0) also downgrades its dependency back to a v3 version (which generates messages that are compatible with both v3 and v4 versions of protobuf).see: