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https://issues.apache.org/jira/browse/TINKERPOP-1188?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Marko A. Rodriguez closed TINKERPOP-1188.
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Resolution: Fixed
Fix Version/s: 3.2.0-incubating
> Semantics of BarrierSteps in TraversalParent global traversals is wrong.
> ------------------------------------------------------------------------
>
> Key: TINKERPOP-1188
> URL: https://issues.apache.org/jira/browse/TINKERPOP-1188
> Project: TinkerPop
> Issue Type: Bug
> Components: process
> Affects Versions: 3.1.1-incubating
> Reporter: Marko A. Rodriguez
> Assignee: Marko A. Rodriguez
> Labels: breaking
> Fix For: 3.2.0-incubating
>
>
> Suppose the following traversal:
> {code}
> g.V.union(outE().count(), inE().count())
> {code}
> Given that {{count()}} is a {{ReducingBarrierStep}} and thus, continues to
> pull until there are no more results, you would expect the result set to be:
> {code}
> [6,6]
> {code}
> However, its actually this:
> {code}
> [3,0]
> [0,1]
> [0,3]
> [2,1]
> [0,1]
> [1,0]
> {code}
> That is, for each traverser into {{union()}}, the {{count()}} is calculated.
> In OLAP, the result is {{[6,6]}} as expected.
> What should we do?
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