Talend Data Preparation configuration files location
         When installing Talend Data Preparation, the configuration
            parameters are stored in the config folder, located at
            <Installation_Path>/dataprep/config.
    
      This folder has application-specific configuration files which allow you to reconfigure the web application according to your installation environment.
This document goes in detail to explain all the parameters present in application.properties, the basic configuration file for Talend Data Preparation.