Method ~TRemoteMRCommandExec

library/cpp/par/par_mr.cpp:156–158

            CancelCallback.Attach(this, queryProc, ReqId);
        }
        ~TRemoteMRCommandExec() override {
            CancelCallback.Detach();
        }
        void LaunchRequest(TContextReplica* context) {
            if (context->GetContextState(AllJobs->EnvId2Version, &ContextData)) {
                UserContext = new TUserContext(QueryProc.Get(), AllJobs.Get(), &ContextData, context->GetWriteBuffer());