[jbossseam-issues] [JBoss JIRA] Closed: (JBSEAM-3188) ConcurrentModificationException on flush of ServerConversationContext

ConcurrentModificationException on flush of ServerConversationContext --------------------------------------------------------------------- Key: JBSEAM-3188 URL: https://jira.jboss.org/jira/browse/JBSEAM-3188 Project: Seam Issue Type: Bug Components: Core Affects Versions: 2.0.3.CR1 Environment: 2.0.3.CR1, JBoss 4.2.2, JDK 5 Reporter: Sanne Grinovero Attachments: JBSEAM-3188-alternative.patch, JBSEAM-3188-example.zip, JBSEAM-3188.patch As confirmed by other people on the forum at http://seamframework.org/Community/ConcurrentModificationExceptionAfterPr... It is possible for ServerConversationContext to iterate on an EntrySet which is modified in the iteration block. I couldn't understand exactly in which scenarios it happens, but it's easy to patch the code to iterate on a copy instead (I'll attach the patch). I can't say if it's correct to make a copy, or if you should actually avoid the changes.