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https://issues.apache.org/jira/browse/KARAF-6210?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17685706#comment-17685706
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Amichai Rothman commented on KARAF-6210:
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And the other bundles that get the same exception, like bundle.core or kar or 
others? Are you changing the shell bundle itself to run before all other karaf 
bundles that contain commands?

I have a feeling this may be a viable workaround, but still wont' solve the 
inherent circular dependency of how the mechanism currently works, and the 
issue may return if ever the shell bundle gets refreshed for any reason or 
such... what do you think?

> NoClassDefFoundError: org/apache/karaf/shell/api/action/Action when starting 
> Karaf
> ----------------------------------------------------------------------------------
>
>                 Key: KARAF-6210
>                 URL: https://issues.apache.org/jira/browse/KARAF-6210
>             Project: Karaf
>          Issue Type: Bug
>          Components: karaf
>    Affects Versions: 4.2.4, 4.3.2
>         Environment: Stock Karaf 4.2.4 on Windows 10 with latest Oracle JDK 8.
>            Reporter: Amichai Rothman
>            Assignee: Jean-Baptiste Onofré
>            Priority: Major
>         Attachments: karaf_command_not_found.log
>
>
> When starting karaf using equinox and some bundle in the deploy folder, many 
> shell commands (such as bundle:* and others) are not recognized, and the log 
> shows NoClassDefFoundError: org/apache/karaf/shell/api/action/Action. Some 
> commands don't work, but others (e.g. shell:*) do.
> This happens consistently on Windows 10, but not on Linux, not sure why.
>  
> Steps to recreate:
> 1. Extract stock Karaf 4.2.4.
> 2. In etc/config.properties change karaf.framework=felix to 
> karaf.framework=equinox.
> 3. Place org.apache.aries.transaction.blueprint-2.2.0.jar (from maven) in 
> deploy folder. This is not the only bundle it happens with, just a public one 
> I found for this example. From several I tried, some recreated the issue and 
> some did not. The bundle is not resolved due to missing dependencies.
> 4. Start Karaf.
> 5. Try to run bundle:list and it'll say command not found. Or look at the 
> karaf log and see "java.lang.NoClassDefFoundError: 
> org/apache/karaf/shell/api/action/Action". Use shell completion to see that 
> some commands are available but others are not.
>  



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