Why do I see ETL Log files showing up on my Exchange 2013 servers post CU6?

Starting with Exchange 2013 CU6, you may notice that the search service may take some additional log file space.  This is because of some changes that Microsoft made where log files are written to the disk in the case of a search issue. These log paths are located at: C:\Program Files\Microsoft\Exchange Server\V15\Bin\Search\Ceres\Diagnostics\logfile C:\Program Files\Microsoft\Exchange Server\V15\Bin\Search\Ceres\Diagnostics\ETLTraces…