[jira] [Reopened] (TINKERPOP-3148) Prevent dedup step from having multiple by modulators

["Cole Greer (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/TINKERPOP-3148?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Cole Greer reopened TINKERPOP-3148:
-----------------------------------

> Prevent dedup step from having multiple by modulators
> -----------------------------------------------------
>
>                 Key: TINKERPOP-3148
>                 URL: https://issues.apache.org/jira/browse/TINKERPOP-3148
>             Project: TinkerPop
>          Issue Type: Improvement
>          Components: process
>    Affects Versions: 3.7.3
>            Reporter: Andrea Child
>            Assignee: Cole Greer
>            Priority: Minor
>             Fix For: 3.8.0
>
>
> Dedup step will ignore previous by modulators if multiple are specified, which can be misleading to the user. Instead, similar to https://issues.apache.org/jira/browse/TINKERPOP-3121 multiple by modulators should be prevented with dedup.
> {code:java}
> gremlin> g.V().dedup().by('age').elementMap()
> ==>[id:1,label:person,name:marko,age:29]
> ==>[id:2,label:person,name:vadas,age:27]
> ==>[id:4,label:person,name:josh,age:32]
> ==>[id:6,label:person,name:peter,age:35]
> gremlin> g.V().dedup().by('name').elementMap()
> ==>[id:1,label:person,name:marko,age:29]
> ==>[id:2,label:person,name:vadas,age:27]
> ==>[id:3,label:software,name:lop,lang:java]
> ==>[id:4,label:person,name:josh,age:32]
> ==>[id:5,label:software,name:ripple,lang:java]
> ==>[id:6,label:person,name:peter,age:35]
> gremlin> g.V().dedup().by('age').by('name').elementMap()
> ==>[id:1,label:person,name:marko,age:29]
> ==>[id:2,label:person,name:vadas,age:27]
> ==>[id:3,label:software,name:lop,lang:java]
> ==>[id:4,label:person,name:josh,age:32]
> ==>[id:5,label:software,name:ripple,lang:java]
> ==>[id:6,label:person,name:peter,age:35] {code}



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