While I don't speak for Google, I believe it's fairly well-established that 2.4 and 2.5 are considered to be "major" releases. Switching between them requires regenerating the java files with protoc, as the internal APIs used by the generated code tend to change. I believe that in general the public API's remain the same, however that doesn't let you have multiple protobuf versions without something like jarjar. The minor releases (2.4.0 vs 2.4.1, etc) should be binary-compatible AFAIK.
-ilia On Wed, Apr 16, 2014 at 4:24 PM, Patrick Wendell <pwend...@gmail.com> wrote: > Hi All, > > I work on Apache Spark which is an open source project. We have recently > been dealing with a lot of pain due to the fact that the Java Protobuf > libraries for 2.4.X and 2.5.0 are not binary compatible. This makes it > really difficult for users to include two dependencies A and B that depend > on different versions of protobuf-java. > > Are these incompatibilities an omission, or is this an intentional policy > that protobuf is okay making API-breaking changes in minor versions? This > violates typical semantic-versioning conventions and makes it pretty tough > for downstream users. > > I don't see any references to library compatibility in the Java protobuf > page or the FAQ - apologies if this is covered somewhere... > https://developers.google.com/protocol-buffers/docs/javatutorial > https://developers.google.com/protocol-buffers/docs/faq > > - Patrick > > -- > You received this message because you are subscribed to the Google Groups > "Protocol Buffers" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to protobuf+unsubscr...@googlegroups.com. > To post to this group, send email to protobuf@googlegroups.com. > Visit this group at http://groups.google.com/group/protobuf. > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "Protocol Buffers" group. To unsubscribe from this group and stop receiving emails from it, send an email to protobuf+unsubscr...@googlegroups.com. To post to this group, send email to protobuf@googlegroups.com. Visit this group at http://groups.google.com/group/protobuf. For more options, visit https://groups.google.com/d/optout.
