Hello Gang, There seems to be a new RpcEngine created as part of Hadoop 3.3. I'm trying to upgrade Hive to use Hadoop 3.3 and it uses the RpcEngine mechanism. However, tests are failing for Hive complaining about:
"ReRegistration of rpcKind" I believe this is because both classes register, statically, as RPC.RpcKind.RPC_PROTOCOL_BUFFER and interfere. This has broken backwards compatibility. Is it intended for the two engines to be prohibited from running at the same time? What is the workaround to allow for third-party libraries to use ProtobufRpcEngine (protobuf 2)? https://github.com/apache/hadoop/blob/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/ProtobufRpcEngine2.java https://github.com/apache/hadoop/blob/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/ProtobufRpcEngine.java Thanks.
