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From "Sebb (JIRA)" <j...@apache.org>
Subject [jira] Commented: (COLLECTIONS-330) ConcurrentModificationException using remove from the keySet the LRUMap
Date Wed, 17 Jun 2009 23:08:07 GMT

    [ https://issues.apache.org/jira/browse/COLLECTIONS-330?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12720974#action_12720974
] 

Sebb commented on COLLECTIONS-330:
----------------------------------

It works for me - but there needs to be an iter.next() before the map.get(iter.getValue()).

> 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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