Could be the result of shutdown or graceful restarts. CleanupHandlers are synthetic to mod_perl and are not specifically supported/guaranteed by httpd
See https://perl.apache.org/docs/2.0/user/handlers/http.html#Possible_Caveats Sent from my iPhone > On Dec 26, 2015, at 14:37, Paul Silevitch <p...@silevitch.com> wrote: > > Hello Mod_perl-ers, > > I've got an app that increments a counter in redis in a > PostReadRequestHandler and decrements it in a CleanupHandler. I'm noticing a > small amount of cases where the counter doesn't get decremented. There are > no segfaults but there are a small number of "Apache2::Filter internal flush: > (-3) Unknown error 4294967293 at -e line 0" messages. Looking at the source > code, I believe a modperl_croak is getting called in this case. Would this > cause the CleanupHandler to not run? What exactly happens when modperl_croak > is called? > > Thanks, > > Paul >
