Hello everyone, we are currently running Confluence 6.1.1 on Ubuntu 16.04 Server. Confluence is joined to our active directory (Windows Server 2012 R2) and I running it behind apache (in order to have a friendly URL on port 443 with auto-redirect from 80).
Over the last few weeks we have noticed that we have a lot of trouble logging in. Sometimes it'll hang for a few minutes and report an error, or it won't do anything. Usually refreshing a few times or closing/re-opening the page fixes it. This is obviously not ideal, and has become a huge pain in the butt (we are also experiencing these issues on a separate JIRA server as well). Below is an excerpt of the errors I am seeing (over and over and over again):
31-Jan-2018 06:08:09.277 WARNING [ContainerBackgroundProcessor[StandardEngine[Standalone]]] org.apache.catalina.valves.StuckThreadDetectionValve.notifyStuckThreadCompleted Thread "http-nio-8090-exec-4" (id=191) was previously reported to be stuck but has completed. It was active for approximately 120,145 milliseconds. There is/are still 1 thread(s) that are monitored by this Valve and may be stuck.
31-Jan-2018 06:08:39.294 WARNING [ContainerBackgroundProcessor[StandardEngine[Standalone]]] org.apache.catalina.valves.StuckThreadDetectionValve.notifyStuckThreadCompleted Thread "http-nio-8090-exec-10" (id=209) was previously reported to be stuck but has completed. It was active for approximately 120,086 milliseconds.
31-Jan-2018 06:14:52.116 INFO [http-nio-8090-exec-2] com.sun.jersey.server.impl.application.WebApplicationImpl._initiate Initiating Jersey application, version 'Jersey: 1.8-atlassian-16 03/23/2015 10:20 PM'
31-Jan-2018 06:16:19.496 WARNING [ContainerBackgroundProcessor[StandardEngine[Standalone]]] org.apache.catalina.valves.StuckThreadDetectionValve.notifyStuckThreadDetected Thread "http-nio-8090-exec-8" (id=207) has been active for 61,901 milliseconds (since 1/31/18 6:15 AM) to serve the same request for http://wiki.insequenceinc.com/doauthenticate.action and may be stuck (configured threshold for this StuckThreadDetectionValve is 60 seconds). There is/are 1 thread(s) in total that are monitored by this Valve and may be stuck.
java.lang.Throwable
at java.lang.Object.wait(Native Method)
at com.sun.jndi.ldap.Connection.readReply(Connection.java:467)
at com.sun.jndi.ldap.LdapClient.getSearchReply(LdapClient.java:638)
at com.sun.jndi.ldap.LdapClient.search(LdapClient.java:561)
at com.sun.jndi.ldap.LdapCtx.doSearch(LdapCtx.java:1985)
at com.sun.jndi.ldap.LdapCtx.searchAux(LdapCtx.java:1844)
at com.sun.jndi.ldap.LdapCtx.c_search(LdapCtx.java:1769)
at com.sun.jndi.toolkit.ctx.ComponentDirContext.p_search(ComponentDirContext.java:392)
at com.sun.jndi.toolkit.ctx.PartialCompositeDirContext.search(PartialCompositeDirContext.java:358)
at com.sun.jndi.ldap.LdapReferralContext.search(LdapReferralContext.java:672)
