Sandeep More created KNOX-2957:
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             Summary: Upgrade Groovy version >= 3.0.8 to support knoxshell on 
JDK17 cluster
                 Key: KNOX-2957
                 URL: https://issues.apache.org/jira/browse/KNOX-2957
             Project: Apache Knox
          Issue Type: Bug
          Components: Server
            Reporter: Sandeep More
            Assignee: Sandeep More


Execution on knoxshell.sh fails on jdk17 with below error

{code:java}
Caught: BUG! exception in phase 'semantic analysis' in source unit 
'/tmp/tokenShell/webHdfsLs.groovy' Unsupported class file major version 61
BUG! exception in phase 'semantic analysis' in source unit 
'/tmp/tokenShell/webHdfsLs.groovy' Unsupported class file major version 61
    at org.apache.knox.gateway.shell.Shell.main(Shell.java:70)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native 
Method)
    at 
java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
    at 
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at 
org.apache.knox.gateway.launcher.Invoker.invokeMainMethod(Invoker.java:68)
    at org.apache.knox.gateway.launcher.Invoker.invoke(Invoker.java:39)
    at org.apache.knox.gateway.launcher.Command.run(Command.java:99)
    at org.apache.knox.gateway.launcher.Launcher.run(Launcher.java:75)
    at org.apache.knox.gateway.launcher.Launcher.main(Launcher.java:52)
Caused by: java.lang.IllegalArgumentException: Unsupported class file major 
version 61
    at groovyjarjarasm.asm.ClassReader.<init>(ClassReader.java:189)
    at groovyjarjarasm.asm.ClassReader.<init>(ClassReader.java:170)
    at groovyjarjarasm.asm.ClassReader.<init>(ClassReader.java:156)
    at groovyjarjarasm.asm.ClassReader.<init>(ClassReader.java:277)
    ... 9 more 
{code}




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