-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 To whom it may concern,
On 1/6/17 5:21 PM, modjkl...@comcast.net wrote: > I'm porting a Apache Flex (with Apache BlazeDS) web app from > glassfish to tomcat 8.5.9, and observing the following severe > error. > > 06-Jan-2017 13:49:07.644 SEVERE > [ContainerBackgroundProcessor[StandardEngine[Catalina]]] > org.apache.catalina.loader.WebappClassLoaderBase.checkThreadLocalMapFo rLeaks > > The web application [myApp] created a ThreadLocal with key of type > [java.lang.ThreadLocal] (value [java.lang.ThreadLocal@4d6e6d7b]) > and a value of type [flex.messaging.io.SerializationContext] > (value [flex.messaging.io.SerializationContext@66135428]) 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. > > Is this a warning or an actual error that is causing a memory > leak? This is probably a problem with the application that Glassfish never detected, but has always been there. This is a warning about a leak, but Tomcat will cycle-through the request-processing threads, retiring them at intervals, in order to mitigate the leak. You're welcome ;) If all goes well, this leak will be handled by Tomcat and your service won't suffer for it. That said, you should fix the problem because cleaning-up messes is wasteful if the mess wasn't necessary in the first place. > Can anyone point me in the right direction to resolve this? The leak itself is coming from your application or one of the libraries it's using. The solution will be to find a fix that leak. I would start by asking the Apache Flex people what the SerializationContext is for, and how to remove ThreadLocal values from shared threads (such as those in a servlet environment). It's possible you are using the Flex framework in a way that is not conducive to a servlet environment, but that a few changes could make it safer to use. > I'm a new Tomcat user (please try to be explicit). Welcome to the community. - -chris -----BEGIN PGP SIGNATURE----- Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQIcBAEBCAAGBQJYcBxSAAoJEBzwKT+lPKRYmNsP/3w4GmqYvLoCS40bUEqmC0gp placYbZkbloyRLxRRjgbod8qZcj5HPQqJzGfzV9vS4Wu5PdWg5rxbavv/aOOR/3X X5hRtzRiw5TBDDUdxjp2MtxoANWRQ+XXITMFTy8dGqoq3LeAmJSsLpFri7T6GwNx SO2ZeuwYPYX+r462tOlFqboS1FvZTcGp/lU1FCoyIAuPs2qwVsHLKEMpnQ4scEpr MB6wf8vx50+dK27MAW/Oa3MaNOfS85FuJsqJ+rqqfUHNI95A6MVGW0ocQ8EeHpna tGY6QC+xfaiLHfd2u7PR+kFUhMC7G94C37rJtF3vqh+x7gUhsEgtzMRpF6tB5FpV ge5zWY9TIWQ7KejLv0VwIdv4cdR4TcMpjG7Kw2wdExEytoINX0L+ATL7Sg3WN1Cv viAct9D4LyHa/Sov1hudC6VXvLBvvzmHTSThVKgW5thNrut279DMXaHCasPLXSIa WK8+MP77LKh9MjsSP1R61GQgZh6y4/hn/E7g/RB3e17oTUzUqc1UsOQa/2nJlyF0 imHpnC2KPiZMb9FMcrwtRG2K7fOSwOVIctVHnIykM27oZA8usjNmdBdmOGzcJR5F wcnkgIOTOsUKaymYNOAeBYH3FmkG/RAjfavsvXACMyDpiaeucHaR6oNtK47MJHCu qnr4kNE/TtpH9Wbx0GoV =vJk+ -----END PGP SIGNATURE----- --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
