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https://issues.apache.org/jira/browse/COLLECTIONS-330?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12721287#action_12721287
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Sebb commented on COLLECTIONS-330:
----------------------------------
The test testSynchronizedRemoveFromEntrySet also fails if one adds the
following to the iterator loop:
map.get(entry.getKey());
The problem is that get() has side effects.
> ConcurrentModificationException using remove from the keySet the LRUMap
> -----------------------------------------------------------------------
>
> Key: COLLECTIONS-330
> URL: https://issues.apache.org/jira/browse/COLLECTIONS-330
> Project: Commons Collections
> Issue Type: Bug
> Components: Collection
> Affects Versions: 3.3
> Reporter: Joerg Schaible
>
> Even if the access to a LRUMap is synced and the remove method of the
> iterator is used that has been returned from the keySet of the LRUMap, it is
> possible to get a ConcurrentModificationException. This does not happen for
> remove of the iterators returned by the entrySet or values of the LRUMap. See
> currently not executed unit test in TestLRUMap (marked as TODO for
> COLLECTION-3).
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