This was a fresh Instalation of ARS 8.1.
This was a server group Environment
On looking at the configuration pointed out some changes. Made the changes and restarted AR Server. After restart ARServer FTS Funcationality working well.
Changes Made were :
>Corrected the fts collection directory path in pluginsvr_conf.
>Corrected the fts configuration directory path in pluginsvr_conf.
>Corrected the fts ftStopFile directory path in pluginsvr_conf.
>Corrected server name in below parameter from ar.cfg
Server-Plugin-Alias: ARSYS.ARF.FTS ARSYS.ARF.FTS Hostname.domain.com:9998
Server-Plugin-Alias: ARSYS.ARDBC.FTSCONFIG ARSYS.ARDBC.FTSCONFIG Hostname.domain.com:9999