worker-timeout can cause httpd thread stalls -------------------------------------------- Key: MODCLUSTER-407 URL: https://issues.jboss.org/browse/MODCLUSTER-407 Project: mod_cluster Issue Type: Bug Affects Versions: 1.2.8.Final Reporter: Aaron Ogburn Assignee: Jean-Frederic Clere Fix For: 1.2.9.Final Setting a modcluster worker-timeout can stall requests and threads on the httpd side when the requests are received with workers in a down state. A stack of the problem thread looks like the following (recursive loops through mod_proxy_cluster from #160 to #2): #0 0x00007ff8eb547533 in select () from /lib64/libc.so.6 #1 0x00007ff8eba39185 in apr_sleep () from /usr/lib64/libapr-1.so.0 #2 0x00007ff8e84be0d1 in ?? () from /etc/httpd/modules/mod_proxy_cluster.so ... #160 0x00007ff8e84beb9f in ?? () from /etc/httpd/modules/mod_proxy_cluster.so #161 0x00007ff8e88d2116 in proxy_run_pre_request () from /etc/httpd/modules/mod_proxy.so #162 0x00007ff8e88d9186 in ap_proxy_pre_request () from /etc/httpd/modules/mod_proxy.so #163 0x00007ff8e88d63c2 in ?? () from /etc/httpd/modules/mod_proxy.so