Netflix/Hystrix — pull request #120 by benjchristensen (2013-02-28 23:29:21+00:00)
Title: Fix for IllegalStateException on Thread Rejection with Response Caching

With the additional logging I was able to write a unit test that replicated the issue and fix it.
Rejected exceptions were not being handled correctly.

https://github.com/Netflix/Hystrix/issues/113