Shane Kumpf created KNOX-943:
--------------------------------

             Summary: 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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