[jira] [Commented] (TINKERPOP-2540) Unexpected count() step result

["Guobao Chen (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/TINKERPOP-2540?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17306794#comment-17306794 ] 

Guobao Chen commented on TINKERPOP-2540:
----------------------------------------

Seems this issue is related to or step and count step.

Following script returns expected result (without or):
{code:java}
gremlin> g.V().hasLabel('person').has('name','testuser1').has('name','testuser1').values('name','age').dedup().count()
==>0{code}
Also following script returns expected result (with or step but without count step):
{code:java}
gremlin> g.V().hasLabel('person').has('name','testuser1').or().has('name','testuser1').values('name','age').dedup()
gremlin> {code}

> Unexpected count() step result
> ------------------------------
>
>                 Key: TINKERPOP-2540
>                 URL: https://issues.apache.org/jira/browse/TINKERPOP-2540
>             Project: TinkerPop
>          Issue Type: Bug
>          Components: process
>    Affects Versions: 3.4.10
>         Environment: OS: Ubuntu 20.04.2 LTS
> Java: Java(TM) SE Runtime Environment (build 1.8.0_241-b07)
>            Reporter: Guobao Chen
>            Priority: Major
>
> After installing latest (tinkerpop version 3.4.10), it's found that running a specific gremlin script with 'count()' step gives unexpected result.
> *Steps to reproduce*
> 1 Install tinkerpop 3.4.10, and connect to this server with gremlin console client
> 2 create a modern graph with TinkerFactory
> {code:java}
> gremlin> graph = TinkerFactory.createModern()
>  ==>tinkergraph[vertices:6 edges:6]{code}
> 3 query with following script in the result
> {code:java}
> gremlin> g.V().hasLabel('person').has('name','testuser1').or().has('name','testuser1').values('name','age').dedup().count()
> {code}
> Note that usser with name 'testuser1' doesn't exist in the created 'modern' graph.
> *Expected result*
> a numeric number showing the count (or 0 if there is no vertices from previous steps before count() step)
> *Actual result*
>  See a list of vertices:
> {code:java}
> gremlin> g.V().hasLabel('person').has('name','testuser1').or().has('name','testuser1').values('name','age').dedup().count()
>  ==>v[1]
>  ==>v[2]
>  ==>v[3]
>  ==>v[4]
>  ==>v[5]
>  ==>v[6]{code}



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