Managed to narrow down to a regression: https://bz.apache.org/bugzilla/show_bug.cgi?id=62224
On Tue, Mar 27, 2018 at 2:09 PM, Behrooz Nobakht <nob...@gmail.com> wrote: > Hi Chris, > > Thanks for the reply. Comments inline: > > On Tue, Mar 27, 2018 at 4:31 AM, Christopher Schultz < > ch...@christopherschultz.net> wrote: > >> -----BEGIN PGP SIGNED MESSAGE----- >> Hash: SHA256 >> >> Behrooz, >> >> On 3/26/18 12:26 AM, Behrooz Nobakht wrote: >> > Hi, >> > >> > I am migrating a code base from Tomcat 8.0.38 to 9.0.6. There are a >> > few things I'd like to confirm based on observations so far and ask >> > for advice: >> > >> > 1. Default Class Loader >> > >> > In 9, it seems that the default is ParallelWebAppClassLoader >> > compared with WebAppClassLoader in 8.0. What behavior changes does >> > the new class loader bring esp. now that it seems to use >> > "concurrent" approach? >> > >> > One specific observation so far is that the code >> > >> > Thread.currentThread().getContextClassLoader() >> > >> > used to give out "a" class loader in 8.0 but it returns null in >> > 9.0. Any advice on this? >> >> What code is fetching the TCCL? Something like a ServletContextListener? >> > > This is a business object trying to resolve a resource using > ClassLoader#gerResource > and class loader is retrieved via above way. The call stack comes from a > REST request > and it's not part of container/context life cycle. > > >> >> > 2. ClassNotFoundException: >> > org.apache.naming.java.javaURLContextFactory >> > >> > Having the code: >> > >> > InitialContext ic = new InitialContext() >> >> What data type is InitialContext in your code, here? Can you post the >> complete stack trace? >> > > InitialContext is javax.naming.InitialContext. > As I traced this, by default this is enabled by Tomcat itself at > Catalina.java > <https://github.com/apache/tomcat/blob/trunk/java/org/apache/catalina/startup/Catalina.java#L823> > . > We might be having implicit class loader conflicts which I am tracing now. > I event tried to install a custom Loader > <http://tomcat.apache.org/tomcat-9.0-doc/config/loader.html> inside the > Context with WebappClassLoader > to see anything changes in comparison with ParallelWebappClassLoader. > Tomcat 8 works but Tomcat 9 fails with ClassNotFoundException: > > javax.naming.NoInitialContextException: Cannot instantiate class: > org.apache.naming.java.javaURLContextFactory [Root exception is > java.lang.ClassNotFoundException: > org.apache.naming.java.javaURLContextFactory] > at javax.naming.spi.NamingManager.getInitialContext( > NamingManager.java:674) > at javax.naming.InitialContext.getDefaultInitCtx( > InitialContext.java:313) > at javax.naming.InitialContext.init(InitialContext.java:244) > at javax.naming.InitialContext.<init>(InitialContext.java:192) > > And, we're not explicitly bundling tomcat-catalina.jar with the webapp. > > Thanks, > Behrooz > > > >> >> > used to work on Tomcat 8.0 but now yields the above exception in >> > Tomcat 9. It seems that catalina.jar is not exposed by default to a >> > webapp class loader. >> >> Nor should it. It should not have been available to applications in >> Tomcat 8, either. Are you bundling catalina.jar with your application? >> >> - -chris >> -----BEGIN PGP SIGNATURE----- >> Comment: GPGTools - http://gpgtools.org >> Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ >> >> iQJRBAEBCAA7FiEEMmKgYcQvxMe7tcJcHPApP6U8pFgFAlq5LncdHGNocmlzQGNo >> cmlzdG9waGVyc2NodWx0ei5uZXQACgkQHPApP6U8pFhSiBAArOCcZ0okwbEp1ag+ >> gCJw3jXcndN3JfmcEoIjNddR8/P2BvGSpZrvNX3b/hECrmlMV7hUl0SpORl7afL5 >> zrP1liEdRlZ50EmpQJULG+yjktc298Ip6eXWQLa6oX9OOLbkZyknlGeI249j6syo >> FXomtb6ZQ4F0WP9wC14N/keAHL2nqTOk7+1p1khfIYPVUM1MfT9EtVnW3weL9kHd >> sn1FZIV3TNkOiukQm9znIeed00YlH0kaS2V9l/GNOvkhwH66xROxiJukm3dUzTQe >> djsigv/mHrEWZDG9rhteJbt9RB6XMsaQogfXh8JlZsfxt2i7Yy12O2LOOHFIMaTl >> 4fjKxiuQl0iOi52rfvrp+CTO/0y0TklPh3gYcNa2dpZm/UGkLrRty199Qs9+KIgy >> d0L5zT9pwFusTwKt/wiVyGcm+Jg2Lq13fD8WNMmElk1h78ceVbM3NFDxZqqaSHK2 >> p3S3xrMsTeFfyFI2BRdUXlV/+HGwwLYnmHWPVSEUhV448WXdOd0kehYSJGLmfXBM >> UrYiZksVTYjsJc5zCADtp4xNm/At9T/Ktcfp67Rm97bR8ityQBuf9xKpJ7eo5Gzj >> Ecl4kFz2W4sRxli0H5zX8lcoO7A9AAk7P0bR1ooMZ/8d6nx1WrIx19zNXz1ou8me >> qI6/uYGGZX23quqgKXKP9g2basE= >> =DOWh >> -----END PGP SIGNATURE----- >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org >> For additional commands, e-mail: users-h...@tomcat.apache.org >> >> > > > -- > -- Behrooz Nobakht > -- -- Behrooz Nobakht
