I'm a total new comer for pentaho kettle for etl
when I launched the application.I got these error below:

10:25:36,775 ERROR [KarafLifecycleListener] The Kettle Karaf Lifecycle Listener failed to execute properly after waiting for 100 seconds. Releasing lifecycle hold, but some services may be unavailable.

My environment is centos 5.11 and the pentaho is pdi-ce-7.0