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https://issues.apache.org/jira/browse/TINKERPOP-1870?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Artem Aliev updated TINKERPOP-1870:
-----------------------------------
    Affects Version/s: 3.2.7
                       3.3.1

> n^2 synchronious operation in OLAP WorkerExecutor.execute() method
> ------------------------------------------------------------------
>
>                 Key: TINKERPOP-1870
>                 URL: https://issues.apache.org/jira/browse/TINKERPOP-1870
>             Project: TinkerPop
>          Issue Type: Improvement
>    Affects Versions: 3.2.7, 3.3.1
>            Reporter: Artem Aliev
>            Priority: Major
>         Attachments: findTraverser1.png, findTraverser2.png, 
> findTraverserFixed.png
>
>
> [https://github.com/apache/tinkerpop/blob/master/gremlin-core/src/main/java/org/apache/tinkerpop/gremlin/process/computer/traversal/WorkerExecutor.java#L80-L93]
> This block of code iterates over all remote traverses to select one related 
> to the current vertex and remove it. This operation is repeated for the next 
> vertex and so one. For following example query it means n^2 operations (n is 
> number of vertices). All of them in sync block. multi core spark executor 
> will do this operations serial. 
> {code}
> g.V().emit().repeat(both().dedup()).count().next()
> {code}
> See jvisualvm screenshot. 



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