If Cheyenne is talking about the query server, I'm not sure where you're getting that from, Ted. It doesn't directly depend on protobufs, it's pulled in from Avatica:
Avatica does use protobuf 3:

Cheyenne, could you try building with an earlier version of Avatica?

On Mon, Feb 13, 2017 at 8:41 PM, Ted Yu <yuzhihong@gmail.com> wrote:
Phoenix uses protobuf 2.5
From pom.xml :



On Mon, Feb 13, 2017 at 4:52 PM, Cheyenne Forbes <cheyenne.osanu.forbes@gmail.com> wrote:
my project highly depends on protobuf2, can I tell phoenix which version of protobuf to read with when I am sending a request?

Mark Heppner