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https://issues.apache.org/jira/browse/TINKERPOP-1280?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15492973#comment-15492973
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ASF GitHub Bot commented on TINKERPOP-1280:
-------------------------------------------

Github user asfgit closed the pull request at:

    https://github.com/apache/tinkerpop/pull/404


> VertexPrograms should declare traverser requirements
> ----------------------------------------------------
>
>                 Key: TINKERPOP-1280
>                 URL: https://issues.apache.org/jira/browse/TINKERPOP-1280
>             Project: TinkerPop
>          Issue Type: Improvement
>          Components: process
>    Affects Versions: 3.2.0-incubating
>            Reporter: Daniel Kuppitz
>            Assignee: Daniel Kuppitz
>             Fix For: 3.2.3
>
>
> VertexPrograms should declare their {{TraverserRequirement}} which can then 
> be propagated by the {{program()}} step. Most VPs (at least the ones I have 
> written so far) rely on (labeled) path information and thus will fail if the 
> actual traversal doesn't use any other steps with the same traverser 
> requirements. I keep running into this issue whenever I write a new VP.



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