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Dmitry Volodin commented on CAMEL-12727: ---------------------------------------- [~boutblock], could you please provide a reproducer as simple as possible. > java.util.ConcurrentModificationException at > org.apache.camel.impl.DefaultExchange.createProperties(DefaultExchange.java:550) > in 2.20.1 > --------------------------------------------------------------------------------------------------------------------------------------- > > Key: CAMEL-12727 > URL: https://issues.apache.org/jira/browse/CAMEL-12727 > Project: Camel > Issue Type: Bug > Components: camel-core > Affects Versions: 2.20.0, 2.22.0 > Environment: Camel 2.20.1. > The exception occurs within a aggregation processor using a custom > aggregation strategy and optimistic locking. > Reporter: Philippe Bouteleux > Priority: Critical > Fix For: 2.19.5 > > Attachments: dih-error.queue_2 (1).txt > > > A concurrent access exception occurs during our load tests while consuming > messages from a rabbitmq queue. > The call stack embedded below shows that the issue is related to an > "optimization" which was introduced in > https://issues.apache.org/jira/browse/CAMEL-11330 to replace a > ConcurrentHashMap with a regular one from version 2.19.5 to 2.20.0 onward. > The faulty code is still present in latest 2.22.0. > > -- This message was sent by Atlassian JIRA (v7.6.3#76005)