BE unit test build failed

[imay]

error log is below

be/test/exec/olap_table_sink_test.cpp:246:53: error: expected class-name before ‘{’ token
 class TestInternalService : public PInternalService {
                                                     ^
be/test/exec/olap_table_sink_test.cpp:251:10: error: ‘void doris::stream_load::TestInternalService::transmit_data(google::protobuf::RpcController*, const doris::PTransmitDataParams*, doris::PTransmitDataResult*, google::protobuf::Closure*)’ m
arked ‘override’, but does not override
     void transmit_data(::google::protobuf::RpcController* controller,
          ^~~~~~~~~~~~~
be/test/exec/olap_table_sink_test.cpp:259:10: error: ‘void doris::stream_load::TestInternalService::tablet_writer_open(google::protobuf::RpcController*, const doris::PTabletWriterOpenRequest*, doris::PTabletWriterOpenResult*, google::protobuf
::Closure*)’ marked ‘override’, but does not override
     void tablet_writer_open(google::protobuf::RpcController* controller,