Actually I don't think your problem is related to Jackson 1.x usage, since you are trying to use 2.7.5 version of Scala module, which requires 2.x base components. 1.x and 2.x components reside in different Java packages and have different Maven group ids so they do not collide.
However it seems likely that your build has an old 1.x version of `jackson-databind`. While error does not contain information showing which class was `final` in an earlier version, I think you need to add explicit depenendency to 2.7.5 verson of at `jackson-databind`, and probably for safety also for `jackson-core` and `jackson-annotations` that databind depends (they are transitive dependencies so version you otherwise get may be something different). -+ Tatu +- ps. Flink is very cool so I want to make sure Jackson works with it as well as possible -- using it a bit at work On Mon, Jul 25, 2016 at 7:12 PM, <jackhu...@mz.com> wrote: > Hi all, > > I want to use *jackson-module-scala_2.11:2.7.5* in my *Apache Flink* > codebase. When I attempt to run the code I get > > java.lang.VerifyError: Cannot inherit from final class >> at java.lang.ClassLoader.defineClass1(Native Method) >> at java.lang.ClassLoader.defineClass(ClassLoader.java:800) >> at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) >> at java.net.URLClassLoader.defineClass(URLClassLoader.java:449) >> at java.net.URLClassLoader.access$100(URLClassLoader.java:71) >> at java.net.URLClassLoader$1.run(URLClassLoader.java:361) >> at java.net.URLClassLoader$1.run(URLClassLoader.java:355) >> at java.security.AccessController.doPrivileged(Native Method) >> at java.net.URLClassLoader.findClass(URLClassLoader.java:354) >> at java.lang.ClassLoader.loadClass(ClassLoader.java:425) >> at java.lang.ClassLoader.loadClass(ClassLoader.java:358) >> at >> com.fasterxml.jackson.module.scala.modifiers.OptionTypeModifierModule$class.$init$(OptionTypeModifierModule.scala:22) >> at >> com.fasterxml.jackson.module.scala.DefaultScalaModule.<init>(DefaultScalaModule.scala:19) >> at >> com.fasterxml.jackson.module.scala.DefaultScalaModule$.<init>(DefaultScalaModule.scala:36) >> at >> com.fasterxml.jackson.module.scala.DefaultScalaModule$.<clinit>(DefaultScalaModule.scala) > > > I looked up on the web and it appears to be a versioning issue. In my far > jar I see that I have both *org.codehaus.jackson* and > *com.fasterxml.jackson* packages. In particular, Flink's core library > uses *jackson-core-asl:1.9.13* and *jackson-mapper-asl:1.9.13*, which I > can't really change. > > Can anyone help me solve this issue? > > Thanks, > > Jack > > -- > You received this message because you are subscribed to the Google Groups > "jackson-user" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to jackson-user+unsubscr...@googlegroups.com. > To post to this group, send email to jackson-user@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "jackson-user" group. To unsubscribe from this group and stop receiving emails from it, send an email to jackson-user+unsubscr...@googlegroups.com. To post to this group, send email to jackson-user@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
