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https://issues.apache.org/jira/browse/TINKERPOP-2957?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yang Xia updated TINKERPOP-2957:
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Priority: Critical (was: Major)
> mergeV with sideEffect not correctly updating properties
> --------------------------------------------------------
>
> Key: TINKERPOP-2957
> URL: https://issues.apache.org/jira/browse/TINKERPOP-2957
> Project: TinkerPop
> Issue Type: Bug
> Components: process
> Affects Versions: 3.6.4
> Reporter: Kelvin Lawrence
> Priority: Critical
>
> A Gremlin user let me know about the following issue. If the query below is
> run twice, the name parameter on the 4567 vertex does not get updated. The
> name on the 1234 vertex does get updated. The query is written this way as
> not all databases support single cardinality as the default. The issue has
> been reproduced using both TinkerGraph and Amazon Neptune.
> {code:java}
> g.mergeV([(T.id): 'test-test-1234']).
> option(onCreate, [(T.label): 'someLabel', 'name': 'name1']).
> option(onMatch, sideEffect(property(single,"name","name2")).constant([:])).
> mergeV([(T.id): 'test-test-4567']).
> option(onCreate, [(T.label): 'someLabel', 'name': 'name1']).
> option(onMatch,
> sideEffect(property(single,"name","name2")).constant([:])){code}
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