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From "Caldarale, Charles R" <Chuck.Caldar...@unisys.com>
Subject RE: All worker threads of my tomcat have been occupied!
Date Thu, 02 Jan 2014 18:16:16 GMT
> From: Benimaur Gao [mailto:benimaur@gmail.com] 
> Subject: All worker threads of my tomcat have been occupied!

> I tried jstack to get some info, and then I found a lot of thread call
> stack like:

> "http-8082-154" daemon prio=10 tid=0x00007f711c21f800 nid=0x5b0a waiting on
> condition [0x00007f70dc887000]
>    java.lang.Thread.State: TIMED_WAITING (sleeping)
>     at java.lang.Thread.sleep(Native Method)
>     at
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:132)

> It seems all of the 200 JIoEndpoint$Worker threads had been occupied.

> It seems context had been set to reload state at some time, but I can't
> figure out under what  circumstance would put tomcat into such state.

Try looking at the threads _not_ doing the wait from StandardContextValve; one of those should
be involved in reloading the webapp and perhaps you can find out what it's waiting for.

 - Chuck


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