Comment 2 for bug 1628535

Hi Larry,
I can't spot anything out of the log other than what you listed.
Those errors usually indicate either:
- non thread safe software with worker
- just overloading with more threads than allowed per config

For the latter you could take a look at:
- https://www.tectut.com/2016/04/workaround-for-scoreboard-is-full-not-at-maxrequestworkers/
- http://serverfault.com/questions/516373/what-is-the-meaning-of-ah00485-scoreboard-is-full-not-at-maxrequestworkers

For the former depending on your config it might be https://bz.apache.org/bugzilla/show_bug.cgi?id=48471

Could you take a look and see if any of that resolves the issue for you?