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https://issues.apache.org/jira/browse/IVY-1628?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Monroe Walker reopened IVY-1628:
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[~jaikiran] Thanks for such a quick response on this! Unfortunately I don't
think the changes in that commit will prevent the problem. I expect the copy
constructor still needs to iterate over the list so there's still the potential
for modification by another thread while that's happening. I think the ideal
here would be to put those lists into a threadlocal variable since that seems
to better match the intent anyway. Otherwise, even if there isn't a concurrency
exception, two threads may both print the same list of warning/error messages
> ConcurrentModificationException in MessageLoggerHelper.sumupProblems
> --------------------------------------------------------------------
>
> Key: IVY-1628
> URL: https://issues.apache.org/jira/browse/IVY-1628
> Project: Ivy
> Issue Type: Bug
> Components: Core
> Environment: Groovy 2.4.12
> Reporter: Monroe Walker
> Assignee: Jaikiran Pai
> Priority: Major
> Fix For: master
>
>
> Our Jenkins build job occasionally fails with
> {code:java}
> java.util.ConcurrentModificationExceptionjava.util.ConcurrentModificationException
> at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:911) at
> java.util.ArrayList$Itr.next(ArrayList.java:861) at
> org.apache.ivy.util.MessageLoggerHelper.sumupProblems(MessageLoggerHelper.java:45)
> at
> org.apache.ivy.util.MessageLoggerEngine.sumupProblems(MessageLoggerEngine.java:136)
> at org.apache.ivy.util.Message.sumupProblems(Message.java:143) at
> org.apache.ivy.core.resolve.ResolveEngine.resolve(ResolveEngine.java:347) at
> org.apache.ivy.Ivy.resolve(Ivy.java:523)
> {code}
> It seems this must be due to a warning / error being logged while
> `sumupProblems` is printing the captured warning/errors.
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