Thanks. Answers below On Tuesday, 2 February 2016, Christopher Schultz < ch...@christopherschultz.net <javascript:_e(%7B%7D,'cvml','ch...@christopherschultz.net');>> wrote:
> -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Yuval, > > On 2/2/16 9:28 AM, Yuval Schwartz wrote: > > On Tue, Feb 2, 2016 at 4:15 PM, Christopher Schultz < > > ch...@christopherschultz.net> wrote: > > > > Yuval, > > > > On 2/2/16 6:21 AM, Yuval Schwartz wrote: > >>>> Hello again Christoph, > >>>> > >>>> I think there is a problem with the way that I installed the > >>>> APR library. If you recall, I installed a compiled version > >>>> from the distros with the commands yum install apr-devel > >>>> openssl-devel tomcat-native > >>>> > >>>> I get the desired "Loaded APR based library" in my logs. > >>>> However, every time I shut down tomcat I get a warning: > >>>> > >>>> WARNING [main] > >>>> org.apache.tomcat.util.net.AbstractEndpoint.shutdownExecutor > >>>> The executor associated with thread pool [http-apr-8080] has > >>>> not fully shutdown. Some application threads may still be > >>>> running > >>>> > >>>> If I remove the packages that I installed (yum remove > >>>> apr-devel openssl-devel tomcat-native) then this warning goes > >>>> away. > >>>> > >>>> Is there something that I forgot to configure when installing > >>>> the APR library? > > > > What makes you think that something is wrong with the library? > > Perhaps you are getting that WARNING because you have > > still-running request-processing threads? > > > > > >> Thanks, any ideas on how I can look into this then? I've tried > >> looking at thread dumps and at the threads that are created and > >> destroyed in my ServletContextListener's contextInitialize and > >> contextDestroyed methods. > > So, just to confirm, when you attempt to shut-down Tomcat, you get > that WARNING and if you take a thread dump after that warning, you > have threads still running contextInitialized and contextDestroyed? When I shut down I get that message (I am able to shut down successfully, I just get that message right before). I can't take a thread dump after I get the message because tomcat is no longer running (i.e. There are no Java processes taking place for me to perform a thread dump on). I mentioned contextInitialized and contextDestroyed simply because I used those methods to print information about threads that were running in order to try to get a better idea of what's going on (i.e. Using Thread.getAllStackTraces()). > > The thread the WARNING is talking about will be one of the HTTP > request processor threads (it even tells you which thread pool is > still in use: http-apr-8080). If you have some long-running requests, > you may get that WARNING during shutdown, but shutdown can still > succeed after those threads complete. > > When I take a thread dump while the application is running I see threads called http-apr-8080-exec-1, http-apr-8080-exec-2, etc. do these threads belong to the pool that the warning is referring to? Are you saying I don't need to pay attention to this warning? As a side question: why should it concern me that a thread might stay open when tomcat is shutting down? If tomcat is shutting down then won't all threads be destroyed anyway? > > If the library loads, I think you installed it properly ;) > > > > > >> Yes, I just reinstalled by compiling the source code and I still > >> get the same error...so it's not the library. > > If you are okay with the library version available from your Linux > distro, you should stick with that. I mentioned this point because, interestingly, when I don't use the apr library (i.e. I use the standard nio) then I don't see the warning that we're discussing. > > - -chris > -----BEGIN PGP SIGNATURE----- > Comment: GPGTools - http://gpgtools.org > Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ > > iEYEARECAAYFAlaxDPgACgkQ9CaO5/Lv0PAgbACeN/Pw1NF+f8Ak9HXeS27vlUKp > 8QAAnirgkqU04C9kTVixWDuDz0jZeBE5 > =hEat > -----END PGP SIGNATURE----- > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > >
