There is an internal Endevor Web Services cleanup tasks that automatically cleans up 'expired' reports and temp files. Expiration time is 30 minutes and can't be changed.
All supported Endevor Releases
Web Services
In the Endevor Tomcat STDENV file:
Sample name pattern for the temp files: '1601551333-1581085751880422-NAME.tmp'
Sample name pattern for reports: '1601551333-1581085751880422-NAME'
where the first section is a timestamp of file creation and the second part is a random unique number.
During periods of high user volume and transaction activity, it is possible for a large number of temporary files to be present simultaneously.
If the zFS filesystem is sized to accommodate the peak volume of temporary files, it should not run out of space.