ambari
On host centos1.hadoop role YARN_CLIENT in invalid state.
Invalid transition. Invalid event: HOST_SVCCOMP_OP_IN_PROGRESS at INSTALL_FAILED
登录元数据库（我是mysql）
use ambari;
select host_id from hosts where host_name='HOSTNAME';
update hostcomponentstate set current_state='INSTALLED' where current_state='INSTALL_FAILED' and host_id=HOSTID;
