Resolution:
The jetty*.log is a special type of log that the Jetty server provides that follow the NCSA log format. It is a kind of audit log of the all the HTTP requests that are made to the server. It is a Jetty specific logging functionality. By Jetty's design, the jetty.YYYY_MM_DD.request.log files are created every day. The files are usually empty because the requests are logged only if the logger named "org.mortbay.jetty.Request" is added to the SystemNode_ROOT appender and log level is set to DEBUG.