Dylan Werner-Meier created TINKERPOP-2858:
---------------------------------------------
Summary: 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
I encountered a `ConcurrentModificationException` during a particularly
difficult Gremlin query, on this specific line of code:
```
currentStep.getLabels().forEach(currentStep::removeLabel);
```
(
[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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