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https://issues.apache.org/jira/browse/TINKERPOP-831?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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stephen mallette updated TINKERPOP-831:
---------------------------------------
    Issue Type: Improvement  (was: Bug)

> How should OLAP treat Collection<Element> objects? No contract is specified.
> ----------------------------------------------------------------------------
>
>                 Key: TINKERPOP-831
>                 URL: https://issues.apache.org/jira/browse/TINKERPOP-831
>             Project: TinkerPop
>          Issue Type: Improvement
>          Components: process
>    Affects Versions: 3.0.2-incubating
>            Reporter: Marko A. Rodriguez
>            Assignee: Marko A. Rodriguez
>            Priority: Major
>              Labels: breaking
>
> Assume the following OLAP query:
> {code}
> g.V.group.by(label).by().by(order(local).by('name'))
> {code}
> The {{Map<String,List<Vertex>>}} that is processed by {{GroupMapReduce}} 
> doesn't have "real vertices." For TinkerGraph/Spark/Giraph, we use 
> {{DetachedVertices}}. However, we don't have a specification for forcing this 
> on vendors. ........ We need a contract so its not "who knows?! -- pura vida 
> -- namaste -- comme ci, comme ├ža"



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