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From "Marcel Reutegger (JIRA)" <j...@apache.org>
Subject [jira] Created: (JCR-2242) Unsynchronized access to MultiIndex#indexes
Date Wed, 05 Aug 2009 14:21:14 GMT
Unsynchronized access to MultiIndex#indexes
-------------------------------------------

                 Key: JCR-2242
                 URL: https://issues.apache.org/jira/browse/JCR-2242
             Project: Jackrabbit Content Repository
          Issue Type: Bug
          Components: jackrabbit-core
            Reporter: Marcel Reutegger
            Priority: Minor


This may result in a concurrent modification exception:

java.util.ConcurrentModificationException
	at java.util.AbstractList$Itr.checkForComodification(AbstractList.java:372)
	at java.util.AbstractList$Itr.next(AbstractList.java:343)
	at org.apache.jackrabbit.core.query.lucene.MultiIndex.getIndexReader(MultiIndex.java:744)
	at org.apache.jackrabbit.core.query.lucene.MultiIndex.getIndexReader(MultiIndex.java:712)
	at org.apache.jackrabbit.core.query.lucene.SearchIndex.getIndexReader(SearchIndex.java:1024)
	at org.apache.jackrabbit.core.query.lucene.SearchIndex.executeQuery(SearchIndex.java:820)
	at org.apache.jackrabbit.core.query.lucene.SingleColumnQueryResult.executeQuery(SingleColumnQueryResult.java:78)
	at org.apache.jackrabbit.core.query.lucene.QueryResultImpl.getResults(QueryResultImpl.java:293)
	at org.apache.jackrabbit.core.query.lucene.SingleColumnQueryResult.<init>(SingleColumnQueryResult.java:70)
	at org.apache.jackrabbit.core.query.lucene.QueryImpl.execute(QueryImpl.java:132)
	at org.apache.jackrabbit.core.query.QueryImpl.execute(QueryImpl.java:127)

This is usually very unlikely but with the recent changes to our tests, index flushes are
very frequent and may cause the above exception.

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