[
https://issues.apache.org/jira/browse/TOREE-355?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15943369#comment-15943369
]
ASF GitHub Bot commented on TOREE-355:
--------------------------------------
Github user asfgit closed the pull request at:
https://github.com/apache/incubator-toree/pull/115
> java.lang.IncompatibleClassChangeError: class
> org.clapper.classutil.asm.ASMEmptyVisitor has interface
> org.objectweb.asm.ClassVisitor as super class
> ---------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: TOREE-355
> URL: https://issues.apache.org/jira/browse/TOREE-355
> Project: TOREE
> Issue Type: Bug
> Environment: Toree 0.2.0.dev1
> CDH 5.9's embedded spark-2.0.0-beta2
> Reporter: Adrien Lavoillotte
> Assignee: Luciano Resende
> Labels: easyfix
>
> Using Toree 0.2.0.dev1 with CDH's embedded spark 2 did not cause TOREE-327
> for me. Instead, I got this error:
> {code}
> Exception in thread "main" java.lang.IncompatibleClassChangeError: class
> org.clapper.classutil.asm.ASMEmptyVisitor has interface
> org.objectweb.asm.ClassVisitor as super class
> at java.lang.ClassLoader.defineClass1(Native Method)
> at java.lang.ClassLoader.defineClass(ClassLoader.java:763)
> at
> java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
> at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)
> at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
> at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
> at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
> at java.security.AccessController.doPrivileged(Native Method)
> at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
> at java.lang.ClassLoader.defineClass1(Native Method)
> at java.lang.ClassLoader.defineClass(ClassLoader.java:763)
> at
> java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
> at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)
> at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
> at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
> at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
> at java.security.AccessController.doPrivileged(Native Method)
> at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
> at
> org.clapper.classutil.asm.ClassFile$.load(ClassFinderImpl.scala:250)
> at
> org.clapper.classutil.ClassFinder.org$clapper$classutil$ClassFinder$$classData(ClassFinder.scala:427)
> at
> org.clapper.classutil.ClassFinder$$anonfun$2.apply(ClassFinder.scala:385)
> at
> org.clapper.classutil.ClassFinder$$anonfun$2.apply(ClassFinder.scala:385)
> at scala.collection.immutable.Stream.map(Stream.scala:418)
> at
> org.clapper.classutil.ClassFinder.processOpenZip(ClassFinder.scala:385)
> at org.clapper.classutil.ClassFinder.processJar(ClassFinder.scala:340)
> at
> org.clapper.classutil.ClassFinder.findClassesIn(ClassFinder.scala:329)
> at org.clapper.classutil.ClassFinder.find(ClassFinder.scala:320)
> at org.clapper.classutil.ClassFinder.getClasses(ClassFinder.scala:311)
> at
> org.apache.toree.plugins.PluginSearcher$$anonfun$1.apply(PluginSearcher.scala:73)
> at
> org.apache.toree.plugins.PluginSearcher$$anonfun$1.apply(PluginSearcher.scala:73)
> at scala.util.Try$.apply(Try.scala:192)
> at
> org.apache.toree.plugins.PluginSearcher.loadClassMap(PluginSearcher.scala:73)
> at
> org.apache.toree.plugins.PluginSearcher.internalClassInfo$lzycompute(PluginSearcher.scala:35)
> at
> org.apache.toree.plugins.PluginSearcher.internalClassInfo(PluginSearcher.scala:34)
> at
> org.apache.toree.plugins.PluginSearcher.internal$lzycompute(PluginSearcher.scala:38)
> at
> org.apache.toree.plugins.PluginSearcher.internal(PluginSearcher.scala:38)
> at
> org.apache.toree.plugins.PluginManager.internalPlugins$lzycompute(PluginManager.scala:45)
> at
> org.apache.toree.plugins.PluginManager.internalPlugins(PluginManager.scala:44)
> at
> org.apache.toree.plugins.PluginManager.initialize(PluginManager.scala:80)
> at
> org.apache.toree.boot.layer.StandardComponentInitialization$class.initializePlugins(ComponentInitialization.scala:221)
> at
> org.apache.toree.boot.layer.StandardComponentInitialization$class.initializeComponents(ComponentInitialization.scala:86)
> at org.apache.toree.Main$$anon$1.initializeComponents(Main.scala:35)
> at
> org.apache.toree.boot.KernelBootstrap.initialize(KernelBootstrap.scala:101)
> at
> org.apache.toree.Main$.delayedEndpoint$org$apache$toree$Main$1(Main.scala:40)
> at org.apache.toree.Main$delayedInit$body.apply(Main.scala:24)
> {code}
> Apparently in some much older version of ASM (3), {{ClassVisitor}} was an
> interface and not an abstract class. Said much older version can be found in
> some Hadoop libs or older Spark libs, and ends up in the classpath with CDH's
> spark 2.
> The simplest solution is to shadow ASM, e.g. using JarJAr Links. The
> following produces an assembly jar that does not have this issue:
> {code}
> echo 'rule org.objectweb.asm.** org.apache.toree.shadow.@0' >relocate.rules
> java -jar jarjar-1.4.jar process relocate.rules toree.jar toree-relocated.jar
> {code}
> ASM is a dependency of ClassUtil, for which [an issue on this is currently
> open|https://github.com/bmc/classutil/issues/19], but the author says he may
> not want to shadow ASM, so I thought maybe you might want to.
--
This message was sent by Atlassian JIRA
(v6.3.15#6346)
