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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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stephen mallette reopened TINKERPOP-1870:
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[~artem.aliev] as soon as I merged this, I noticed something that looked like
it needed some more work. I'm going to re-open this and submit an additional
pull request. I will supply details with that pull request - if you could
review that when I issue the pull request to be sure I captured your original
intent, I would appreciate it.
> 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
>Assignee: stephen mallette
>Priority: Major
> Fix For: 3.2.8, 3.3.2
>
> 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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