[
https://issues.apache.org/jira/browse/TINKERPOP-1529?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Daniel Kuppitz updated TINKERPOP-1529:
--------------------------------------
Description:
There are scenarios where {{LazyBarrierStrategy}} changes the semantics of a
traversal:
{noformat}
gremlin> g = TinkerFactory.createModern().traversal()
==>graphtraversalsource[tinkergraph[vertices:6 edges:6], standard]
gremlin> g.V().store("a").out().select("a")
==>[v[1],v[2],v[3],v[4],v[5],v[6]]
==>[v[1],v[2],v[3],v[4],v[5],v[6]]
==>[v[1],v[2],v[3],v[4],v[5],v[6]]
==>[v[1],v[2],v[3],v[4],v[5],v[6]]
==>[v[1],v[2],v[3],v[4],v[5],v[6]]
==>[v[1],v[2],v[3],v[4],v[5],v[6]]
{noformat}
This is actually not the result of {{store()}}, this is {{aggregate()}}. The
expected result for {{store()}} would be:
{noformat}
==>[v[1]]
==>[v[1]]
==>[v[1]]
==>[v[1],v[2],v[3],v[4]]
==>[v[1],v[2],v[3],v[4]]
==>[v[1],v[2],v[3],v[4],v[5],v[6]]
{noformat}
Another issue, which should probably go into another ticket, is this:
{noformat}
gremlin>
g.withoutStrategies(LazyBarrierStrategy).V().store("a").out().select("a")
==>[v[1],v[2],v[3],v[4],v[5],v[6]]
==>[v[1],v[2],v[3],v[4],v[5],v[6]]
==>[v[1],v[2],v[3],v[4],v[5],v[6]]
{noformat}
That's it, the console is hanging at this point. Looks like
{{PathRetractionStrategy}} is the remaining troublemaker. With both strategies
excluded, we get the expected result:
{noformat}
gremlin> g.withoutStrategies(LazyBarrierStrategy,
PathRetractionStrategy).V().store("a").out().select("a")
==>[v[1]]
==>[v[1]]
==>[v[1]]
==>[v[1],v[2],v[3],v[4]]
==>[v[1],v[2],v[3],v[4]]
==>[v[1],v[2],v[3],v[4],v[5],v[6]]
{noformat}
was:
There are scenarios where {{LazyBarrierStrategy}} changes the semantics of a
traversal:
{noformat}
gremlin> g = TinkerFactory.createModern().traversal()
==>graphtraversalsource[tinkergraph[vertices:6 edges:6], standard]
gremlin> g.V().store("a").out().select("a")
==>[v[1],v[2],v[3],v[4],v[5],v[6]]
==>[v[1],v[2],v[3],v[4],v[5],v[6]]
==>[v[1],v[2],v[3],v[4],v[5],v[6]]
==>[v[1],v[2],v[3],v[4],v[5],v[6]]
==>[v[1],v[2],v[3],v[4],v[5],v[6]]
==>[v[1],v[2],v[3],v[4],v[5],v[6]]
{noformat}
This is actually not the result of {{store()}}, this is {{aggregate()}}. The
expected result for {{store()}} would be:
{noformat}
==>[v[1]]
==>[v[1],v[2]]
==>[v[1],v[2],v[3]]
==>[v[1],v[2],v[3],v[4]]
==>[v[1],v[2],v[3],v[4],v[5]]
==>[v[1],v[2],v[3],v[4],v[5],v[6]]
{noformat}
Another issue, which should probably go into another ticket, is this:
{noformat}
gremlin>
g.withoutStrategies(LazyBarrierStrategy).V().store("a").out().select("a")
==>[v[1],v[2],v[3],v[4],v[5],v[6]]
==>[v[1],v[2],v[3],v[4],v[5],v[6]]
==>[v[1],v[2],v[3],v[4],v[5],v[6]]
{noformat}
That's it, the console is hanging at this point. Looks like
{{PathRetractionStrategy}} is the remaining troublemaker. But even if both
strategies are excluded, the result is still not what I would expect:
{noformat}
gremlin> g.withoutStrategies(LazyBarrierStrategy,
PathRetractionStrategy).V().store("a").out().select("a")
==>[v[1]]
==>[v[1]]
==>[v[1]]
==>[v[1],v[2],v[3],v[4]]
==>[v[1],v[2],v[3],v[4]]
==>[v[1],v[2],v[3],v[4],v[5],v[6]]
{noformat}
> LazyBarrierStrategy is too agressive
> ------------------------------------
>
> Key: TINKERPOP-1529
> URL: https://issues.apache.org/jira/browse/TINKERPOP-1529
> Project: TinkerPop
> Issue Type: Bug
> Components: process
> Affects Versions: 3.2.3
> Reporter: Daniel Kuppitz
>
> There are scenarios where {{LazyBarrierStrategy}} changes the semantics of a
> traversal:
> {noformat}
> gremlin> g = TinkerFactory.createModern().traversal()
> ==>graphtraversalsource[tinkergraph[vertices:6 edges:6], standard]
> gremlin> g.V().store("a").out().select("a")
> ==>[v[1],v[2],v[3],v[4],v[5],v[6]]
> ==>[v[1],v[2],v[3],v[4],v[5],v[6]]
> ==>[v[1],v[2],v[3],v[4],v[5],v[6]]
> ==>[v[1],v[2],v[3],v[4],v[5],v[6]]
> ==>[v[1],v[2],v[3],v[4],v[5],v[6]]
> ==>[v[1],v[2],v[3],v[4],v[5],v[6]]
> {noformat}
> This is actually not the result of {{store()}}, this is {{aggregate()}}. The
> expected result for {{store()}} would be:
> {noformat}
> ==>[v[1]]
> ==>[v[1]]
> ==>[v[1]]
> ==>[v[1],v[2],v[3],v[4]]
> ==>[v[1],v[2],v[3],v[4]]
> ==>[v[1],v[2],v[3],v[4],v[5],v[6]]
> {noformat}
> Another issue, which should probably go into another ticket, is this:
> {noformat}
> gremlin>
> g.withoutStrategies(LazyBarrierStrategy).V().store("a").out().select("a")
> ==>[v[1],v[2],v[3],v[4],v[5],v[6]]
> ==>[v[1],v[2],v[3],v[4],v[5],v[6]]
> ==>[v[1],v[2],v[3],v[4],v[5],v[6]]
> {noformat}
> That's it, the console is hanging at this point. Looks like
> {{PathRetractionStrategy}} is the remaining troublemaker. With both
> strategies excluded, we get the expected result:
> {noformat}
> gremlin> g.withoutStrategies(LazyBarrierStrategy,
> PathRetractionStrategy).V().store("a").out().select("a")
> ==>[v[1]]
> ==>[v[1]]
> ==>[v[1]]
> ==>[v[1],v[2],v[3],v[4]]
> ==>[v[1],v[2],v[3],v[4]]
> ==>[v[1],v[2],v[3],v[4],v[5],v[6]]
> {noformat}
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