The File Reader process automatically restarts every 15 minutes (due to a File Reader Timeout) if the heartbeat is not detected.
To resolve the issue of the File Reader process automatically restarting, the Discover Server default value for restarting the server must be increased to accommodate large files.
To change the Discover Server restart settings:
See also: Guidelines for tuning Symantec Data Loss Prevention to scan large files
For detection time outs see KB TECH220447: In an overloaded environment, detection process is timing out.