Server disk activity every 10 seconds

[vsteel]

I have a Linux Subsonic server running and even when no one is using the server I get disk activity every 10 seconds, give or take a couple of seconds. I did a search and found a solution for windows where you kill the tray icon and it will stop the polling but I can't find anything for Linux. When I run iotop to see what the command is that is accessing the disk, this is what it shows.
java -xmx512m -dsubsonic.home=/var/subsonic -dsubsonic.host=0.0.0.0 -dsubsonic.port=4040 -dsubsonic.https~folder=/var/playlists -djava.awt.headless=true -verbose:gc -jar subsonic-booter-jar-with-dependencies.jar

There are no errors in the log file but including the last few lines for completeness.
[12/2/17 10:42:53 AM MST] INFO HsqlDaoHelper Checking database schema.
[12/2/17 10:42:53 AM MST] INFO HsqlDaoHelper Done checking database schema.
[12/2/17 10:42:53 AM MST] INFO SettingsService Java: 1.8.0_151, OS: Linux
[12/2/17 10:42:53 AM MST] INFO VersionService Resolved local Subsonic version to: 6.1.3
[12/2/17 10:42:53 AM MST] INFO MediaScannerService Automatic media library scanning scheduled to run every 1 day(s), starting at Sun Dec 03 03:00:00 MST 2017
[12/2/17 10:42:53 AM MST] INFO UPnPService Starting UPnP service...
[12/2/17 10:42:53 AM MST] INFO UPnPService Disabling UPnP/DLNA media server
[12/2/17 10:42:53 AM MST] INFO UPnPService Starting UPnP service - Done!
[12/2/17 10:42:53 AM MST] INFO PodcastService Automatic Podcast update scheduled to run every 24 hour(s), starting at Sat Dec 02 10:47:53 MST 2017
[12/2/17 10:43:00 AM MST] INFO BootstrapVerificationFilter Servlet container: jetty-6.1.x
[12/2/17 10:43:03 AM MST] INFO NetworkService Deleted port mapping for port 4040
[12/2/17 10:43:04 AM MST] INFO PlayerDao Created player 9.
[12/2/17 10:43:04 AM MST] INFO VersionService Resolved latest Subsonic final version to: 6.1.3
[12/2/17 10:43:04 AM MST] INFO VersionService Resolved latest Subsonic beta version to: 6.1.beta2

Other information:
License Subsonic Premium
Version 6.1.3 (build e408c9) – October 31, 2017
Server jetty-6.1.x, java 1.8.0_151, HSQLDB, Linux (114.7 MB / 474.0 MB)
Linux Kubuntu 17.10

[vsteel]

Digging more into this I found in the db directory a subsonic.log which did have more information. The DB log is what seems to be filing up with messages of:
/*C234335*/SET SCHEMA PUBLIC
CONNECT USER SA
DISCONNECT

Over and over, the C number keeps incrementing, the words are the same.
I have purged subsonic and reinstalled with the same results. I have tried an older version after purging everything with the same errors.
I should add that I have deleted the entire Subsonic directory each time between reinstalls in addition to the purge.

Any idea what is up with the database?