[TINKERPOP-2858] ConcurrentModificationException in ConnectiveStrategy

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 3.4.6
• Fix Version/s: 3.7.0
• Component/s: process
• Assignee: Stephen Mallette
• Reporter: Dylan Werner-Meier
• Created: 19/Jan/23 16:32
• Updated: 16/Jun/23 14:37
• Resolved: 16/Jun/23 14:37

Description

I encountered a "ConcurrentModificationException" during a particularly difficult Gremlin query, on this specific line of code:

                    currentStep.getLabels().forEach(currentStep::removeLabel);

( ConnectiveStrategy.java:98 )

 

"currentStep.getLabels()" is a "LinkedHashSet", and it doesn't support concurrent iteration and modification.

 

Proposed fix: add a "clearLabels()" method to "AbstractStep".