Having 100 publishes purposefully started concurrently causes about 15% of the jobs to fail. Each one of these publishes instantiated another 5-6 Javelin processes.
When this issue was investigated, the following was determined:
Based on the above, Javelin was changed to not allow files to be named the same.
Javelin-18.104.22.168.zip has been supplied as the fix for this issue. Please contact Support for a fix if you are experiencing this issue.