Hi Michael, Yes - that is indeed an error regarding the version of protobuf that needs to be used. Pretty much all of the Hadoop ecosystem components have standardized on protobuf-2.5.0. Newer versions would likely have worked assuming protobuf retained compatibility.
In any case, you do need to switch back to protobuf-2.5.0. Modifying the pom would have likely fixed the build issue with Tez but you would have ended up facing errors when trying on a cluster as hadoop needs 2.5.0. Could you file a jira and submit a patch for this issue ( and if you came across any other confusing/unclear items in the documentation )? thanks — Hitesh On Mar 22, 2015, at 8:34 AM, Michael Howard <mhow...@podiumdata.com> wrote: > Installation doc should clarify which version of protobuf is required. > > Tez installation doc at http://tez.apache.org/install.html says: > > > This assumes that you have already installed ... Protocol Buffers (protoc > > compiler) 2.5 or later > > I initially installed protobuf 2.6.1 ... and mvn failed with: > > > [ERROR] Failed to execute goal ... protoc version is 'libprotoc 2.6.1', > > expected version is '2.5.0' -> [Help 1] > > I observe that pom.xml says: > <protobuf.version>2.5.0</protobuf.version> > > At this point, it wasn't clear to me whether I should roll back to protobuf > 2.5.0 or override the protobuf.version to be 2.6.1 > > For newbies like me, it would be helpful to have more clear instructions > regarding protobuf version on the installation page. > > > Thanks! > Michael >
