Take a look at this discussion: https://groups.google.com/d/msg/akka-user/a8GcX2qEm6g/OIbFTtPaSRoJ
/Patrik On Tue, Sep 30, 2014 at 9:48 PM, Daniel Davies <davi...@att.net> wrote: > Thanks for the hint. I had trouble getting the router and children to use > a different dispatcher. However, I was able to change the default > dispatcher. That got rid all of the messages except one. > > SEVERE: The web application [/pois] created a ThreadLocal with key of type > [scala.concurrent.forkjoin.ThreadLocalRandom$1] (value > [scala.concurrent.forkjoin.ThreadLocalRandom$1@6c64cb25]) and a value of > type [scala.concurrent.forkjoin.ThreadLocalRandom] (value > [scala.concurrent.forkjoin.ThreadLocalRandom@6ae5aa72]) but failed to > remove it when the web application was stopped. This is very likely to > create a memory leak. > > > Daniel Davies > > > On Tuesday, September 30, 2014 1:58:33 AM UTC-6, Akka Team wrote: >> >> >> Hi Daniel, >> >> Have you tried using a different dispatcher than the fork-join one like a >> thread-pool-executor? If the problem goes away after changing the >> dispatcher then this is a bug in the ForkJoinPool. >> >> -Endre >> >> On Fri, Sep 26, 2014 at 4:38 AM, Daniel Davies <dav...@att.net> wrote: >> >>> Sorry, I was interrupted while posting this and did not notice I had not >>> completed the versions. >>> AKKA 2.3.6 >>> Scala 2.11 >>> Java 8 >>> >>> Not sure what you need for shutdown. I have given the sequence. >>> You execute the shutdown script for Tomcat >>> Spring has Application Listeners and I have one that listens for the >>> ContextClosedEvent - which means the application is quitting >>> This listener calls system.stop on my top level actors. >>> It then calls system.shutdown >>> Lastly, it calls system.awaitTermination blocking until complete >>> system is an ActorSystem >>> >>> The top level Actors are routers that have a varying number of child >>> actors using resizer. It seems like the number error messages corresponds >>> to the number of child actors, but I can't be sure since I don't know how >>> many actors are running at any time. >>> >>> On Thursday, September 25, 2014 3:38:03 PM UTC-6, √ wrote: >>>> >>>> Hi Daniel, >>>> >>>> In order to be able to understand how that happens, a couple of >>>> questions come to mind: >>>> how are you shutting down your system and what version of Akka are you >>>> using? (there is no version named 2.11 that I know of) >>>> >>>> On Thu, Sep 25, 2014 at 11:26 PM, Daniel Davies <dav...@att.net> wrote: >>>> >>>>> I am running Tomcat 6 >>>>> AKKA 2.11 >>>>> I am using Spring Webservices. I have an Application listener that >>>>> listens for a ContextClosedEvent. This calls system.stop on top level >>>>> actors , then system.shutdown and then an awaitTermination. After these >>>>> run I get a series of errors like: >>>>> SEVERE: The web application [/pois] created a ThreadLocal with key of >>>>> type [java.lang.ThreadLocal] (value [java.lang.ThreadLocal@79e2c065]) >>>>> and a value of type [scala.concurrent.forkjoin.ForkJoinPool.Submitter] >>>>> (value [scala.concurrent.forkjoin.ForkJoinPool$Submitter@7e07db1f]) >>>>> but failed to remove it when the web application was stopped. This is very >>>>> likely to create a memory leak. >>>>> >>>>> This is just one of several error messages. These posts indicate that >>>>> it is fixed, but it does not appear to be fixed. >>>>> >>>>> >>>>> >>>>> On Thursday, September 20, 2012 7:52:15 AM UTC-6, √ wrote: >>>>>> >>>>>> Shouldn't be a problem. >>>>>> >>>>>> https://www.assembla.com/spaces/akka/tickets/2479 >>>>>> >>>>>> Cheers, >>>>>> √ >>>>>> >>>>>> On Thu, Sep 20, 2012 at 3:45 PM, Eirik <eiri...@gmail.com> wrote: >>>>>> >>>>>>> I'm using Akka 2.0.3 on Tomcat 7.0.30 and am facing the same issues >>>>>>> on shutdown. >>>>>>> >>>>>>> I've got a shutdown method that gets called before Tomcats >>>>>>> memory-leak-detection algorithm runs. The shutdown method does: >>>>>>> actorSystem.shutdown(); >>>>>>> actorSystem.awaitTermination(); >>>>>>> >>>>>>> But Tomcat still complains: >>>>>>> SEVERE: The web application [/******] created a ThreadLocal with key >>>>>>> of type [akka.jsr166y.ForkJoinPool.ThreadSubmitter] (value >>>>>>> [akka.jsr166y.ForkJoinPool$ThreadSubmitter@1e8b404]) and a value of >>>>>>> type [akka.jsr166y.ForkJoinPool.Submitter] (value >>>>>>> [akka.jsr166y.ForkJoinPool$Submitter@829a91]) but failed to remove >>>>>>> it when the web application was stopped. Threads are going to be renewed >>>>>>> over time to try and avoid a probable memory leak. >>>>>>> >>>>>>> I haven't dug deep enough at the moment to figure out if I should >>>>>>> worry about this or not, but I've written some more shutdown logic just >>>>>>> to >>>>>>> be safe, that searches through threadlocals to find the >>>>>>> ForkJoinPool$Submitter and removes it. This solves the issue, but >>>>>>> shouldn't >>>>>>> akka already have take care of cleaning up when I called shutdown and >>>>>>> awaitTermination? >>>>>>> >>>>>>> Regards, Eirik >>>>>>> >>>>>>> -- >>>>>>> >>>>>>>>>> Read the docs: http://akka.io/docs/ >>>>>>> >>>>>>>>>> Check the FAQ: http://akka.io/faq/ >>>>>>> >>>>>>>>>> Search the archives: https://groups.google.com/grou >>>>>>> p/akka-user >>>>>>> --- >>>>>>> You received this message because you are subscribed to the Google >>>>>>> Groups "Akka User List" group. >>>>>>> To post to this group, send email to akka...@googlegroups.com. >>>>>>> To unsubscribe from this group, send email to akka-user+...@ >>>>>>> googlegroups.com. >>>>>>> Visit this group at http://groups.google.com/group/akka-user?hl=en. >>>>>>> >>>>>>> >>>>>>> >>>>>> >>>>>> >>>>>> >>>>>> -- >>>>>> Viktor Klang >>>>>> >>>>>> Akka Tech Lead >>>>>> Typesafe <http://www.typesafe.com/> - The software stack for >>>>>> applications that scale >>>>>> >>>>>> Twitter: @viktorklang >>>>>> >>>>>> -- >>>>> >>>>>>>>>> Read the docs: http://akka.io/docs/ >>>>> >>>>>>>>>> Check the FAQ: http://doc.akka.io/docs/akka/c >>>>> urrent/additional/faq.html >>>>> >>>>>>>>>> Search the archives: https://groups.google.com/grou >>>>> p/akka-user >>>>> --- >>>>> You received this message because you are subscribed to the Google >>>>> Groups "Akka User List" group. >>>>> To unsubscribe from this group and stop receiving emails from it, send >>>>> an email to akka-user+...@googlegroups.com. >>>>> To post to this group, send email to akka...@googlegroups.com. >>>>> Visit this group at http://groups.google.com/group/akka-user. >>>>> For more options, visit https://groups.google.com/d/optout. >>>>> >>>> >>>> >>>> >>>> -- >>>> Cheers, >>>> √ >>>> >>> -- >>> >>>>>>>>>> Read the docs: http://akka.io/docs/ >>> >>>>>>>>>> Check the FAQ: http://doc.akka.io/docs/akka/ >>> current/additional/faq.html >>> >>>>>>>>>> Search the archives: https://groups.google.com/ >>> group/akka-user >>> --- >>> You received this message because you are subscribed to the Google >>> Groups "Akka User List" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to akka-user+...@googlegroups.com. >>> To post to this group, send email to akka...@googlegroups.com. >>> Visit this group at http://groups.google.com/group/akka-user. >>> For more options, visit https://groups.google.com/d/optout. >>> >> >> >> >> -- >> Akka Team >> Typesafe - The software stack for applications that scale >> Blog: letitcrash.com >> Twitter: @akkateam >> > -- > >>>>>>>>>> Read the docs: http://akka.io/docs/ > >>>>>>>>>> Check the FAQ: > http://doc.akka.io/docs/akka/current/additional/faq.html > >>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user > --- > You received this message because you are subscribed to the Google Groups > "Akka User List" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to akka-user+unsubscr...@googlegroups.com. > To post to this group, send email to akka-user@googlegroups.com. > Visit this group at http://groups.google.com/group/akka-user. > For more options, visit https://groups.google.com/d/optout. > -- Patrik Nordwall Typesafe <http://typesafe.com/> - Reactive apps on the JVM Twitter: @patriknw -- >>>>>>>>>> Read the docs: http://akka.io/docs/ >>>>>>>>>> Check the FAQ: >>>>>>>>>> http://doc.akka.io/docs/akka/current/additional/faq.html >>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user --- You received this message because you are subscribed to the Google Groups "Akka User List" group. 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