[GROOVY-1581] ConcurrentModificationException when running same script in multiple threads

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 1.0-RC-1
• Fix Version/s: 1.1-beta-1
• Environment: 2-processor windows xp
• Assignee: Guillaume Sauthier
• Reporter: Mattias Reichel
• Created: 08/Dec/06 09:02
• Updated: 01/May/07 11:00
• Resolved: 01/May/07 11:00

Description

ConcurrentModificationException when running the same script file (with dependencies) in multiple threads on a multiprocessor machine with the same GroovyScriptEngine instance. Does not occur on singleprocessor machine.
It does not happen every time when running the test case but most of the times.

java.util.ConcurrentModificationException
at java.util.HashMap$HashIterator.nextEntry(Unknown Source)
at java.util.HashMap$KeyIterator.next(Unknown Source)
at groovy.util.GroovyScriptEngine.updateCacheEntry(GroovyScriptEngine.java:285)
at groovy.util.GroovyScriptEngine.run(GroovyScriptEngine.java:376)
at GroovyConcurrentTest$ScriptRunner.run(GroovyConcurrentTest.java:79)