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https://issues.apache.org/jira/browse/TINKERPOP-3201?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ken Hu closed TINKERPOP-3201.
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Resolution: Fixed
> Fix tail inside repeat
> ----------------------
>
> Key: TINKERPOP-3201
> URL: https://issues.apache.org/jira/browse/TINKERPOP-3201
> Project: TinkerPop
> Issue Type: Bug
> Components: process
> Affects Versions: 3.8.0
> Reporter: Ken Hu
> Priority: Major
> Fix For: 3.8.0
>
>
> tail() step inside repeat() is not properly resetting per iteration.
> Consider the following queries on the modern graph on 3.7.x
> {code:java}
> gremlin>
> g.withoutStrategies(RepeatUnrollStrategy).V(1).repeat(__.both().order().tail(2)).times(2)
> ==>v[4]
> ==>v[6]
> {code}
> {code:java}
> gremlin> g.V(1).both().order().tail(2).both().order().tail(2)
> ==>v[5]
> ==>v[6]
> {code}
> The unrolled version doesn't match the repeat() version because tail() is
> recalculated on each call to processNextStart(). The tail() is being
> calculated too frequently even though there are still output traversers
> remaining from the previous calculation.
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