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From "Christan Keller (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (JCR-3225) ConcurrentModificationException in QueryStatImpl
Date Thu, 02 Feb 2012 16:52:52 GMT
ConcurrentModificationException in QueryStatImpl
------------------------------------------------

                 Key: JCR-3225
                 URL: https://issues.apache.org/jira/browse/JCR-3225
             Project: Jackrabbit Content Repository
          Issue Type: Bug
          Components: jackrabbit-core
    Affects Versions: 2.3.7, 2.3.6
            Reporter: Christan Keller


Running with qurystats enabled the Query#execute can throw ConcurrentModificationException

caused by the iterator which backing collection is changed from another thread

see logQuery method
        Iterator<QueryStatDtoImpl> iterator = popularQueries.iterator();
        while (iterator.hasNext()) {
-->            QueryStatDtoImpl qsdi = iterator.next();
            if (qsdi.equals(qs)) {
                qs.setOccurrenceCount(qsdi.getOccurrenceCount() + 1);
                iterator.remove();
                break;
            }
        }
        popularQueries.offer(qs);


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