use -n worker option again
use -n worker option again


Former-commit-id: 5413f4c55ed21427f1d5b629226d07e1f63785d9
skale-me/skale-engine,skale-me/skale-engine,mvertes/skale-engine,mvertes/skale-engine,mvertes/skale-engine,skale-me/skale-engine