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https://issues.apache.org/jira/browse/TINKERPOP-1960?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17763139#comment-17763139
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Cole Greer commented on TINKERPOP-1960:
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Looks like this is still an issue as of 3.7.0. fold() appears to be applying at
a local scope here.
> fold() doesn't fold in OLAP
> ---------------------------
>
> Key: TINKERPOP-1960
> URL: https://issues.apache.org/jira/browse/TINKERPOP-1960
> Project: TinkerPop
> Issue Type: Bug
> Components: hadoop
> Affects Versions: 3.2.9, 3.7.0
> Reporter: Daniel Kuppitz
> Priority: Major
>
> {noformat}
> gremlin> g.withSack(0).V().hasLabel("person").as("from","to").
> ......1> repeat(both().as("to").dedup("from","to").
> ......2> sack(sum).by(constant(1))).
> ......3> emit(hasLabel("person")).
> ......4> sack().dedup().fold()
> ==>[1,2,3]
> gremlin> g.withComputer().withSack(0).V().hasLabel("person").as("from","to").
> ......1> repeat(both().as("to").dedup("from","to").
> ......2> sack(sum).by(constant(1))).
> ......3> emit(hasLabel("person")).
> ......4> sack().dedup().fold()
> ==>[1]
> ==>[2]
> ==>[3]
> {noformat}
> I only noticed the misbehavior in this particular traversal, other tests
> looked good, so there must be a step that somehow interferes with {{fold()}}.
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