What is file box.log under integrator/server/logs?

Several files in the server/logs directory have become quite large unexpectedly. I don’t know why. They were so large that we were close to running out of space in /hci. Usually /hci stays pretty constant in space used.

[hci@cloverprod]:/hci/cis6.1/integrator/server/logs> ll

total 324280

-rw-rw-r–    1 hci      staff     153261004 Jan 30 09:29 box.log

-rw-rw-r–    1 hci      staff       6413220 Nov 23 08:39 box.log_bak

-rw-rw-r–    1 hci      staff             0 Nov 23 08:40 clws.log

-rw-rw-r–    1 hci      staff             0 Nov 20 13:01 clws.log_bak

-rw-rw-r–    1 hci      staff            63 Nov 23 08:40 ldap.log

-rw-rw-r–    1 hci      staff            63 Nov 20 13:01 ldap.log_bak

-rw-rw-r–    1 hci      staff           907 Nov 23 08:40 server.log

-rw-rw-r–    1 hci      staff           972 Nov 23 08:40 server.log_bak

-rw-rw-r–    1 hci      staff       5884067 Jan 30 09:29 smat.log

-rw-rw-r–    1 hci      staff        328270 Nov 22 16:16 smat.log_bak

I had to delete them to make sure we could still keep running. They must have been held by the host server because after deletion the file system still showed them in use until I recycled the host server.

The box.log file is starting to fill again. It only contains this message, repeated over and over:

box:RefreshBoxIndex: ERR: 01/30/2017 09:36:00: Exception occurred while getting all indexed BOX(es).

box:RefreshBoxIndex: ERR: 01/30/2017 09:36:00: org.apache.lucene.store.NoSuchDirectoryException: directory ‘/hci/cis6.1/integrator/box/_index’ does not exist

Is someone trying to use the box function? No one here has used it in a while.