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https://issues.apache.org/jira/browse/NIFI-5479?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16567458#comment-16567458
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ASF GitHub Bot commented on NIFI-5479:
--------------------------------------

Github user joewitt commented on the issue:

    https://github.com/apache/nifi/pull/2933
  
    2018-08-02 16:20:07,347 WARN [NiFi Web Server-21] 
o.e.jetty.annotations.AnnotationParser javax.inject.Inject scanned from 
multiple locations: 
jar:file:///Users/jwitt/Development/joewitt-nifi.git/nifi-assembly/target/nifi-1.8.0-SNAPSHOT-bin/nifi-1.8.0-SNAPSHOT/work/jetty/nifi-update-attribute-ui-1.8.0-SNAPSHOT.war/webapp/WEB-INF/lib/javax.inject-1.jar!/javax/inject/Inject.class,
 
jar:file:///Users/jwitt/Development/joewitt-nifi.git/nifi-assembly/target/nifi-1.8.0-SNAPSHOT-bin/nifi-1.8.0-SNAPSHOT/work/jetty/nifi-update-attribute-ui-1.8.0-SNAPSHOT.war/webapp/WEB-INF/lib/javax.inject-2.5.0-b42.jar!/javax/inject/Inject.class
    2018-08-02 16:20:07,348 WARN [NiFi Web Server-21] 
o.e.jetty.annotations.AnnotationParser javax.inject.Named scanned from multiple 
locations: 
jar:file:///Users/jwitt/Development/joewitt-nifi.git/nifi-assembly/target/nifi-1.8.0-SNAPSHOT-bin/nifi-1.8.0-SNAPSHOT/work/jetty/nifi-update-attribute-ui-1.8.0-SNAPSHOT.war/webapp/WEB-INF/lib/javax.inject-1.jar!/javax/inject/Named.class,
 
jar:file:///Users/jwitt/Development/joewitt-nifi.git/nifi-assembly/target/nifi-1.8.0-SNAPSHOT-bin/nifi-1.8.0-SNAPSHOT/work/jetty/nifi-update-attribute-ui-1.8.0-SNAPSHOT.war/webapp/WEB-INF/lib/javax.inject-2.5.0-b42.jar!/javax/inject/Named.class
    2018-08-02 16:20:07,348 WARN [NiFi Web Server-21] 
o.e.jetty.annotations.AnnotationParser javax.inject.Provider scanned from 
multiple locations: 
jar:file:///Users/jwitt/Development/joewitt-nifi.git/nifi-assembly/target/nifi-1.8.0-SNAPSHOT-bin/nifi-1.8.0-SNAPSHOT/work/jetty/nifi-update-attribute-ui-1.8.0-SNAPSHOT.war/webapp/WEB-INF/lib/javax.inject-1.jar!/javax/inject/Provider.class,
 
jar:file:///Users/jwitt/Development/joewitt-nifi.git/nifi-assembly/target/nifi-1.8.0-SNAPSHOT-bin/nifi-1.8.0-S
    2018-08-02 16:20:16,335 WARN [main] 
o.e.j.webapp.StandardDescriptorProcessor Duplicate mapping from / to default
    2018-08-02 16:20:16,429 WARN [main] o.e.jetty.annotations.AnnotationParser 
Unknown asm implementation version, assuming version 393216
    
    Todo:
    - identify source of and cleanup warnings that now show up on application 
startup
    - test/what if one just copied the contents of a new lib dir on top of 
their old lib dir as an upgrade process...will our work dirs get cleaned and 
restart properly
    - add docs in the unpack method to explain why we move 
META-INF/bundled-dependencies to NAR-INF/bundled-dependencies
      - this is just a technique to work with older/current nar creation 
approach.
      - this is done because jetty's code assumes that META-INF is only in a 
directory path once or else it fails to find some tlds.
      - but we want to keep META-INF for things like META-INF/MANIFEST.mf and 
maven bits.
      - we might want to just move META-INF/bundled-dependencies to 
bundled-dependencies.  The 'NAR-INF' part is not value add since the nar 
metadata is in META-INF/MANIFEST.mf and not easily moved due to jar/manifest 
loading code
    - file a JIRA to change where we write them in the nar plugin to 
NAR-INF/bundled-dependencies directly
    - Test secure/non-secure clusters/etc..



> Upgrade version of Jetty
> ------------------------
>
>                 Key: NIFI-5479
>                 URL: https://issues.apache.org/jira/browse/NIFI-5479
>             Project: Apache NiFi
>          Issue Type: Improvement
>          Components: Core Framework
>    Affects Versions: 1.7.1
>            Reporter: Andy LoPresto
>            Assignee: Matt Gilman
>            Priority: Major
>
> Upgrade to a new version of Jetty. 



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