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https://issues.apache.org/jira/browse/TINKERPOP-2858?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Stephen Mallette closed TINKERPOP-2858.
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Fix Version/s: 3.7.0
Assignee: Stephen Mallette
Resolution: Fixed
Fixed as CTR
https://github.com/apache/tinkerpop/commit/21fbcb9955977ce3c907208d02230b93e134ba51
> ConcurrentModificationException in ConnectiveStrategy
> -----------------------------------------------------
>
> Key: TINKERPOP-2858
> URL: https://issues.apache.org/jira/browse/TINKERPOP-2858
> Project: TinkerPop
> Issue Type: Bug
> Components: process
> Affects Versions: 3.4.6
> Reporter: Dylan Werner-Meier
> Assignee: Stephen Mallette
> Priority: Critical
> Fix For: 3.7.0
>
>
> I encountered a "ConcurrentModificationException" during a particularly
> difficult Gremlin query, on this specific line of code:
> {code:java}
> currentStep.getLabels().forEach(currentStep::removeLabel);
> {code}
> (
> [ConnectiveStrategy.java:98|https://github.com/apache/tinkerpop/blob/3.6-dev/gremlin-core/src/main/java/org/apache/tinkerpop/gremlin/process/traversal/strategy/decoration/ConnectiveStrategy.java#L98]
> )
>
> "currentStep.getLabels()" is a "LinkedHashSet", and it doesn't support
> concurrent iteration and modification.
>
> Proposed fix: add a "clearLabels()" method to "AbstractStep".
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