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From "Xin Wei (Jira)" <j...@apache.org>
Subject [jira] [Commented] (TINKERPOP-2286) ID type support bug causing regression when loading data
Date Tue, 20 Aug 2019 17:59:00 GMT

    [ https://issues.apache.org/jira/browse/TINKERPOP-2286?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16911600#comment-16911600
] 

Xin Wei commented on TINKERPOP-2286:
------------------------------------

If they don't support id assignment the willAllowId will return false when entering the first supportsAnyIds()
call.

>  but that wouldn't be typical TinkerPop system behavior and I'm not sure what sorts
of unexpected behaviors you'd get as a result of doing so.

That's the reason why I'm raising this issue.

> ID type support bug causing regression when loading data
> --------------------------------------------------------
>
>                 Key: TINKERPOP-2286
>                 URL: https://issues.apache.org/jira/browse/TINKERPOP-2286
>             Project: TinkerPop
>          Issue Type: Bug
>          Components: structure
>    Affects Versions: 3.4.3
>         Environment: Linux
>            Reporter: Xin Wei
>            Priority: Blocker
>
> Our provider version only supports string id, however when loading data with numeric
ids via g.io().read().iterate() the DB didn't error out, but assigned random ids to those
vertices with numeric ids, causing regression.
> The cause is : [https://github.com/apache/tinkerpop/blob/master/gremlin-core/src/main/java/org/apache/tinkerpop/gremlin/structure/Graph.java#L803] 
> The allowId() method returns false when supportsStringIds() returns true and id is not
instance of string. 
> Then this method: 
> [https://github.com/apache/tinkerpop/blob/master/gremlin-core/src/main/java/org/apache/tinkerpop/gremlin/structure/util/Attachable.java#L291]
> will not pass id into Graph.addVertex() method, making underlying method assign internal
ids to the vertex, causing regression between the data we load and the data we store in the
DB.



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