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;