http://bugzilla.slf4j.org/show_bug.cgi?id=224 Summary: BasicMDCAdapter.getCopyOfContextMap can lead to ConcurrentModificationException Product: SLF4J Version: 1.6.x Platform: PC OS/Version: Linux Status: NEW Severity: major Priority: P1 Component: Core API AssignedTo: slf4j-dev@qos.ch ReportedBy: alex.boisvert@gmail.com As illustrated by this stacktrace, java.util.ConcurrentModificationException at java.util.HashMap$HashIterator.nextEntry(HashMap.java:793) at java.util.HashMap$EntryIterator.next(HashMap.java:834) at java.util.HashMap$EntryIterator.next(HashMap.java:832) at java.util.HashMap.putAllForCreate(HashMap.java:435) at java.util.HashMap.<init>(HashMap.java:225) at org.slf4j.helpers.BasicMDCAdapter.getCopyOfContextMap(BasicMDCAdapter.java:130) at org.slf4j.MDC.getCopyOfContextMap(MDC.java:176) at com.bizo.logging.SmtpHandler.publish(SmtpHandler.java:65) at java.util.logging.Logger.log(Logger.java:458) at java.util.logging.Logger.doLog(Logger.java:480) at java.util.logging.Logger.log(Logger.java:503) at java.util.logging.Logger.info(Logger.java:1022) it appears that if BasicMDCAdapter.getCopyOfContextMap() is called while the parent thread is mutating the context, a ConcurrentModificationException can be thrown. -- Configure bugmail: http://bugzilla.slf4j.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug.