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Daniel Kuppitz commented on TINKERPOP-1597: ------------------------------------------- I created a branch and added the (failing) test case. https://github.com/apache/tinkerpop/tree/TINKERPOP-1597 > PathRetractionStrategy messing up certain traversals > ---------------------------------------------------- > > Key: TINKERPOP-1597 > URL: https://issues.apache.org/jira/browse/TINKERPOP-1597 > Project: TinkerPop > Issue Type: Bug > Components: process > Affects Versions: 3.3.0 > Reporter: Daniel Kuppitz > > There are certain types of traversals that do not work when > {{PathRetractionStrategy}} is included. This ticket discusses one specific > case that is only reproducible in {{3.3.0-SNAPSHOT}} / current {{master/}}. > Here's the traversal and the expected result: > {noformat} > gremlin> > g.withoutStrategies(PathRetractionStrategy).V(1,2).as("a").optional(bothE().dedup().as("b")).choose(select("b").select("a","b")., > project("a").by(select("a"))) > ==>[a:v[2]] > ==>[a:v[1],b:e[9][1-created->3]] > ==>[a:v[1],b:e[7][1-knows->2]] > ==>[a:v[1],b:e[8][1-knows->4]] > {noformat} > With {{PathRetractionStrategy}} included we get: > {noformat} > gremlin> > g.V(1,2).as("a").optional(bothE().dedup().as("b")).choose(select("b"), > select("a","b"), project("a").by(select("a"))) > ==>[a:v[2]] > {noformat} > What's interesting is, that the following 2 traversals compile to the same > final traversal (according to {{.explain()}}): > {noformat} > g.withoutStrategies(PathRetractionStrategy).V(1,2).as("a").optional(bothE().dedup().as("b")).choose(select("b").barrier(2500), > select("a","b").barrier(2500), project("a").by(select("a").barrier(2500))) > g.V(1,2).as("a").optional(bothE().dedup().as("b")).choose(select("b"), > select("a","b"), project("a").by(select("a"))) > {noformat} > ...but the one w/ {{PathRetractionStrategy}} still returns the wrong result, > while the other traversal returns the expected result. -- This message was sent by Atlassian JIRA (v6.3.4#6332)