We run a self-hosted confluence as our own help page. Since the installation, threads stuck periodically up to 200 threads and then block the use of the page for approximate 20 minutes (proxy error). I have already tried some things and am little puzzled about it, because i cant get rid of this.
postgres (9.4.13) - max-connections = 300 (3 reserved)
confluence (6.5.1) - hibernate.c3p0.max_size = 250
tomcat - maxThreads = 200
I have already read the other requests here with threads getting stuck, but I couldn't find any tips.
WARNING [ContainerBackgroundProcessor[StandardEngine[Standalone]]] org.apache.catalina.valves.StuckThreadDetectionValve.notifyStuckThreadDetected Thread "http-nio-8090-exec-467" (id=10682) has been active for 62,719 milliseconds (since 1/4/18 12:52 AM) to serve the same request for [*our-help-site*]/plugins/macrobrowser/browse-macros.action?detailed=false¯oMetadataClientCacheKey=1514981697420 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.
2 3 4 ... and soone
It looks periodic, but can't find a task in confluence or anything else that could cause this. (no cronjobs)
Does anyone have an idea about this please?
To investigate the issue you are reporting we need to examine logs and configuration files that we can't share on the Community forum. I created a ticket on your behalf, you should receive an email from our support portal shortly.
After we resolve the issue we can circle back to let the Community know.
@Alexander Schillingcould you please shed some light on this issue? I have this issue and it appears as though @Sujit Kumar has this issue too. My head is getting sore from hitting the wall by my desk on this one..
Was it an SELINUX issue? Confluence being behind an HTTPD proxy? HTTPD and Tomcat are behind an AWS ELB?
We got the problem solved.
We created a clone of the VM to investigate and try and the clone didn't have the same problems as the original VM, also not if we let the real traffic go on it.
So since some months we use the cloned machine and deleted the original VM image.
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