@Victor
Sarkar
This is as per current design of Ambari. Whenever we start a service the service clients Install message appears in the UI operational logs.
If the client binaries are already installed on the host then it wont reinstall the clients actually so that operation is pretty fast. As you will see the message like means existing packages will not be reinstalled. In this phase various symlinks are checked using the "conf-select dry-run-create" approach
Skipping installation of existing package xxxxxx
.