Starting namenodes on [localhost]
localhost: starting namenode, logging to /opt/hadoop-2.9.0/logs/hadoop-ha-namenode-root.out
localhost: nice: cannot set niceness: Permission denied
localhost: starting datanode, logging to /opt/hadoop-2.9.0/logs/hadoop-ha-datanode-root.out
localhost: nice: cannot set niceness: Permission denied
Starting secondary namenodes [0.0.0.0]
0.0.0.0: starting secondarynamenode, logging to /opt/hadoop-2.9.0/logs/hadoop-ha-secondarynamenode-root.out
0.0.0.0: nice: cannot set niceness: Permission denied
Meu sistema é o Windows 10. Eu baixei o Ubuntu da loja e tentei configurar o hadoop. Mas não funciona quando eu digito sbin/start-dfs.sh