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https://issues.apache.org/jira/browse/TINKERPOP-1893?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16369144#comment-16369144
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Florian Hockmann commented on TINKERPOP-1893:
---------------------------------------------

{{AddV}} is a step that adds a new vertex to the graph and not a label to an 
existing vertex. See the reference docs for more information: 
[http://tinkerpop.apache.org/docs/current/reference/#addvertex-step]

You can't change vertex labels of an existing vertex in TinkerPop. Instead, you 
have to set them when you create the vertex (with theĀ {{AddV}} step).

I'm closing this one as it isn't a bug, but feel free to re-open in case you 
meant something else.

> AddV(string label) does not add label
> -------------------------------------
>
>                 Key: TINKERPOP-1893
>                 URL: https://issues.apache.org/jira/browse/TINKERPOP-1893
>             Project: TinkerPop
>          Issue Type: Bug
>          Components: dotnet
>    Affects Versions: 3.2.7, 3.3.1
>         Environment: Windows, IIS, docker
>            Reporter: Klaus Stephan
>            Assignee: Florian Hockmann
>            Priority: Major
>
> public GraphTraversal<Vertex, Vertex> AddV(string label) does not add a label 
> to the vertex.
> Can someone please check this?
> Is there a workaround to set the label until the next build? (I am fairly new 
> to gremlin)
> I tried this on 3.3.2-rc1 and 3.2.8-rc1 (the majors don't work for me because 
> of TINKERPOP-1880)
> I use [https://hub.docker.com/r/bricaud/gremlin-server/] for testing.



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