add RequestCheckpointNotify in grpc

paddle/fluid/operators/detail/grpc_server.cc

@@ -247,9 +247,6 @@ void AsyncGRPCServer::StartServer() {
       std::bind(&AsyncGRPCServer::TryToRegisterNewOne, this,
                 std::placeholders::_1, std::placeholders::_2);
 
-  LOG(INFO) << "Server StartServer on "
-            << "TryToRegisterNewOne bind finished";
-
   for (auto& t : rpc_call_map_) {
     auto& rpc_name = t.first;
     auto& cq = rpc_cq_[rpc_name];
@@ -258,7 +255,7 @@ void AsyncGRPCServer::StartServer() {
 
     reqs.reserve(kRequestBufSize);
 
-    LOG(INFO) << "TryToRegisterNewOne on RPC NAME: " << rpc_name << "I: " << i;
+    LOG(INFO) << "TryToRegisterNewOne on RPC NAME: " << rpc_name << " I: " << i;
 
     for (int i = 0; i < kRequestBufSize; i++) {
       TryToRegisterNewOne(rpc_name, i);
@@ -313,8 +310,11 @@ void AsyncGRPCServer::TryToRegisterNewOne(const std::string& rpc_name,
     return;
   }
 
-  VLOG(4) << "register send rpc_name:" << rpc_name
-          << ", handler:" << rpc_call_map_[kRequestSend];
+  LOG(INFO) << "TryToRegisterNewOne on RPC NAME: " << rpc_name
+            << " REQ ID: " << req_id;
+
+  // VLOG(4) << "register send rpc_name:" << rpc_name
+  //         << ", handler:" << rpc_call_map_[kRequestSend];
 
   auto& reqs = rpc_reqs_[rpc_name];
   auto& handler = rpc_call_map_[rpc_name];
@@ -328,6 +328,7 @@ void AsyncGRPCServer::TryToRegisterNewOne(const std::string& rpc_name,
   } else if (rpc_name == kRequestPrefetch) {
     b = new RequestPrefetch(&service_, cq.get(), handler, req_id);
   } else if (rpc_name == kRequestCheckpoint) {
+    LOG(INFO) << "TryToRegisterNewOne on RPC kRequestCheckpoint";
     b = new RequestCheckpointNotify(&service_, cq.get(), handler, req_id);
   } else {
     PADDLE_ENFORCE(false, "not supported rpc");