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https://issues.apache.org/jira/browse/KNOX-943?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16702278#comment-16702278
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Lars Francke commented on KNOX-943:
-----------------------------------
I did investigate today and found a few more answers. I won't create a new
ticket though.
The problem is that Knox up until 1.1.0 includes both asm 3.3.1 and 5.0.1 in
its classpath (dep directory). 3.3.1 has higher priority in the classloader
(due to the order the jars are read). Unfortunately jetty-annotations requires
a newer version of asm and fails with 3.3.1.
Now this must have been a problem for a while. It just doesn't show for
"normal" users because the default gateway-log4j.properties file sets the
logging level for anything that's not "org.apache.knox.gateway" to ERROR and
this is a WARN. It doesn't seem to break anything though...
In 1.2.0 all the dependencies have been updated and I only see asm 7.0 so I
assume it works now but I wasn't able to test yet. Should be easy to do though:
Edit log4j file and start Knox.
> Incompatibility with Hadoop/HBase cglib/asm dependencies
> --------------------------------------------------------
>
> Key: KNOX-943
> URL: https://issues.apache.org/jira/browse/KNOX-943
> Project: Apache Knox
> Issue Type: Bug
> Affects Versions: 0.12.0
> Reporter: Shane Kumpf
> Priority: Minor
>
> I maintain the
> [hadoop-mini-clusters|https://github.com/sakserv/hadoop-mini-clusters]
> project and have been working to update to the latest knox version in HDP
> 2.6.
> Unfortunately, I'm running into an issue with different cglib/asm dependency
> versions for the WebHDFS/Knox and Stargate/Knox tests that results in the
> following exception.
> {code}
> 2017-05-20 08:15:54 WARN QueuedThreadPool:610 -
> java.lang.IncompatibleClassChangeError: class
> org.eclipse.jetty.annotations.AnnotationParser$MyClassVisitor 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$1.run(URLClassLoader.java:362)
> at java.security.AccessController.doPrivileged(Native Method)
> at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
> at
> org.eclipse.jetty.annotations.AnnotationParser.scanClass(AnnotationParser.java:974)
> at
> org.eclipse.jetty.annotations.AnnotationParser.parseJarEntry(AnnotationParser.java:956)
> at
> org.eclipse.jetty.annotations.AnnotationParser.parseJar(AnnotationParser.java:909)
> at
> org.eclipse.jetty.annotations.AnnotationParser.parse(AnnotationParser.java:831)
> at
> org.eclipse.jetty.annotations.AnnotationConfiguration$ParserTask.call(AnnotationConfiguration.java:164)
> at
> org.eclipse.jetty.annotations.AnnotationConfiguration$1.run(AnnotationConfiguration.java:549)
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635)
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555)
> at java.lang.Thread.run(Thread.java:745)
> 2017-05-20 08:15:54 WARN QueuedThreadPool:610 -
> java.lang.IncompatibleClassChangeError:
> org/eclipse/jetty/annotations/AnnotationParser$MyClassVisitor
> at
> org.eclipse.jetty.annotations.AnnotationParser.scanClass(AnnotationParser.java:974)
> at
> org.eclipse.jetty.annotations.AnnotationParser.parseJarEntry(AnnotationParser.java:956)
> at
> org.eclipse.jetty.annotations.AnnotationParser.parseJar(AnnotationParser.java:909)
> at
> org.eclipse.jetty.annotations.AnnotationParser.parse(AnnotationParser.java:831)
> at
> org.eclipse.jetty.annotations.AnnotationConfiguration$ParserTask.call(AnnotationConfiguration.java:164)
> at
> org.eclipse.jetty.annotations.AnnotationConfiguration$1.run(AnnotationConfiguration.java:549)
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635)
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555)
> at java.lang.Thread.run(Thread.java:745)
> 2017-05-20 08:15:54 WARN QueuedThreadPool:610 -
> java.lang.IncompatibleClassChangeError:
> org/eclipse/jetty/annotations/AnnotationParser$MyClassVisitor
> at
> org.eclipse.jetty.annotations.AnnotationParser.scanClass(AnnotationParser.java:974)
> at
> org.eclipse.jetty.annotations.AnnotationParser.parseJarEntry(AnnotationParser.java:956)
> at
> org.eclipse.jetty.annotations.AnnotationParser.parseJar(AnnotationParser.java:909)
> at
> org.eclipse.jetty.annotations.AnnotationParser.parse(AnnotationParser.java:831)
> at
> org.eclipse.jetty.annotations.AnnotationConfiguration$ParserTask.call(AnnotationConfiguration.java:164)
> at
> org.eclipse.jetty.annotations.AnnotationConfiguration$1.run(AnnotationConfiguration.java:549)
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635)
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555)
> at java.lang.Thread.run(Thread.java:745)
> 2017-05-20 08:15:54 WARN QueuedThreadPool:610 -
> java.lang.IncompatibleClassChangeError:
> org/eclipse/jetty/annotations/AnnotationParser$MyClassVisitor
> at
> org.eclipse.jetty.annotations.AnnotationParser.scanClass(AnnotationParser.java:974)
> at
> org.eclipse.jetty.annotations.AnnotationParser.parseJarEntry(AnnotationParser.java:956)
> at
> org.eclipse.jetty.annotations.AnnotationParser.parseJar(AnnotationParser.java:909)
> at
> org.eclipse.jetty.annotations.AnnotationParser.parse(AnnotationParser.java:831)
> at
> org.eclipse.jetty.annotations.AnnotationConfiguration$ParserTask.call(AnnotationConfiguration.java:164)
> at
> org.eclipse.jetty.annotations.AnnotationConfiguration$1.run(AnnotationConfiguration.java:549)
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635)
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555)
> at java.lang.Thread.run(Thread.java:745)
> 2017-05-20 08:15:54 WARN QueuedThreadPool:610 -
> java.lang.IncompatibleClassChangeError:
> org/eclipse/jetty/annotations/AnnotationParser$MyClassVisitor
> at
> org.eclipse.jetty.annotations.AnnotationParser.scanClass(AnnotationParser.java:974)
> at
> org.eclipse.jetty.annotations.AnnotationParser.parseJarEntry(AnnotationParser.java:956)
> at
> org.eclipse.jetty.annotations.AnnotationParser.parseJar(AnnotationParser.java:909)
> at
> org.eclipse.jetty.annotations.AnnotationParser.parse(AnnotationParser.java:831)
> at
> org.eclipse.jetty.annotations.AnnotationConfiguration$ParserTask.call(AnnotationConfiguration.java:164)
> at
> org.eclipse.jetty.annotations.AnnotationConfiguration$1.run(AnnotationConfiguration.java:549)
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635)
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555)
> at java.lang.Thread.run(Thread.java:745)
> 2017-05-20 08:15:54 WARN QueuedThreadPool:617 - Unexpected thread death:
> org.eclipse.jetty.util.thread.QueuedThreadPool$3@764f86b5 in
> qtp1890777616{STARTED,8<=8<=254,i=3,q=0}
> 2017-05-20 08:15:54 WARN QueuedThreadPool:617 - Unexpected thread death:
> org.eclipse.jetty.util.thread.QueuedThreadPool$3@764f86b5 in
> qtp1890777616{STARTED,8<=8<=254,i=3,q=0}
> 2017-05-20 08:15:54 WARN QueuedThreadPool:617 - Unexpected thread death:
> org.eclipse.jetty.util.thread.QueuedThreadPool$3@764f86b5 in
> qtp1890777616{STARTED,8<=8<=254,i=3,q=0}
> 2017-05-20 08:15:54 WARN QueuedThreadPool:617 - Unexpected thread death:
> org.eclipse.jetty.util.thread.QueuedThreadPool$3@764f86b5 in
> qtp1890777616{STARTED,8<=8<=254,i=3,q=0}
> 2017-05-20 08:15:54 WARN QueuedThreadPool:617 - Unexpected thread death:
> org.eclipse.jetty.util.thread.QueuedThreadPool$3@764f86b5 in
> qtp1890777616{STARTED,8<=8<=254,i=3,q=0}
> {code}
> I've attempted to exclude the various versions of asm/cglib, use cglib-nodep,
> relocate asm packages, etc. Any changes I make results in another system
> failing, i.e. excluding the older asm versions results in jersey failures.
> Here is a branch with the all of the updates that runs into the exception
> above. [https://github.com/sakserv/hadoop-mini-clusters/tree/hdp26]
> The specific test that fails is:
> [KnoxLocalClusterIntegrationTest|https://github.com/sakserv/hadoop-mini-clusters/blob/hdp26/hadoop-mini-clusters-knox/src/test/java/com/github/sakserv/minicluster/impl/KnoxLocalClusterIntegrationTest.java].
> The ASM FAQ talks about how tools and frameworks should repackage ASM, and it
> seems many already do. [http://asm.ow2.org/doc/faq.html#Q15]
> Any thoughts on how to address this?
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