ConcurrentModificationException in LogbackMDCAdapter ---------------------------------------------------- Key: LBCLASSIC-268 URL: http://jira.qos.ch/browse/LBCLASSIC-268 Project: logback-classic Issue Type: Bug Affects Versions: 0.9.28 Environment: JRE 1.6.0_25, Windows 7 64-bit Reporter: Scott Stanton Assignee: Logback dev list Priority: Critical I'm seeing ConcurrentModificationException errors like the following: {panel} 011-05-23T04:53:31.997 | ERROR | Dispatch-001 | | | | OperationCaller | null | java.util.ConcurrentModificationException: null at java.util.HashMap$HashIterator.nextEntry(HashMap.java:793) ~[na:1.6.0_21] at java.util.HashMap$EntryIterator.next(HashMap.java:834) ~[na:1.6.0_21] at java.util.HashMap$EntryIterator.next(HashMap.java:832) ~[na:1.6.0_21] at java.util.HashMap.putAll(HashMap.java:523) ~[na:1.6.0_21] at ch.qos.logback.classic.util.LogbackMDCAdapter.put(LogbackMDCAdapter.java:76) ~[logback-classic.jar:na] at org.slf4j.MDC.put(MDC.java:112) ~[slf4j-api.jar:1.6.1] {panel} -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://jira.qos.ch/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira