When a particularly backend URL is reverse proxied into the server two or more times, the following spurious warning is given: [Fri Mar 19 13:52:59 2010] [warn] worker [URL] already used by another worker As it is entirely valid to expose a backend server more than once in an URL space, this log statement should be reset to debug level.
Patch applied to trunk, proposed for backport: http://people.apache.org/~minfrin/httpd-proxy-worker-already-used.patch
*** Bug 44350 has been marked as a duplicate of this bug. ***
Applied as revision r962992 and released with 2.2.16.
*** Bug 49708 has been marked as a duplicate of this bug. ***