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https://issues.apache.org/jira/browse/JCR-3225?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13199632#comment-13199632
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Jukka Zitting commented on JCR-3225:
------------------------------------
Merged to the 2.4 branch in revision 1240068.
> 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: 2.3.6, 2.3.7
> Reporter: Christan Keller
> Fix For: 2.4
>
>
> 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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