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https://issues.apache.org/jira/browse/AMQ-5580?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Timothy Bish resolved AMQ-5580.
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Resolution: Fixed
Fixed on master.
> Thread unsafe operations on the PersistenceAdapters in the mKahaDB
> implementation
> ---------------------------------------------------------------------------------
>
> Key: AMQ-5580
> URL: https://issues.apache.org/jira/browse/AMQ-5580
> Project: ActiveMQ
> Issue Type: Bug
> Components: Message Store
> Affects Versions: 5.10.0, 5.10.1, 5.11.0
> Reporter: Timothy Bish
> Assignee: Timothy Bish
> Priority: Minor
> Fix For: 5.12.0
>
>
> The MultiKahaDBPersistenceAdapter stores the list of PersistenceAdapters in a
> LinkedList and does not guard against concurrent read / write operations
> which can lead to exceptions in the logs and possible other subtle issues due
> to the fact that traversal can be interrupted. The simple solution is to use
> a CopyOnWriteArrayList here as this list is only added to and the set of
> adapters is generally not very large. This will prevent an errors during
> iterations over the set of adapters.
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