[jboss-jira] [JBoss JIRA] Created: (JBCACHE-1355) java.util.ConcurrentModificationException under load in JBoss Cache 2.0.0.GA

[Anton Spirkov (JIRA)]

java.util.ConcurrentModificationException under load in JBoss Cache 2.0.0.GA
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                 Key: JBCACHE-1355
                 URL: http://jira.jboss.com/jira/browse/JBCACHE-1355
             Project: JBoss Cache
          Issue Type: Bug
      Security Level: Public (Everyone can see)
    Affects Versions: 2.0.0.GA
         Environment: JDK 1.6.0_5
            Reporter: Anton Spirkov
         Assigned To: Manik Surtani


Concurrent Modification Exception appears under load (~500 TPS). We Add, Read and Remove same objects all the time during the tests.

The Exception:
java.util.ConcurrentModificationException
        at java.util.HashMap$HashIterator.nextEntry(HashMap.java:793)
        at java.util.HashMap$KeyIterator.next(HashMap.java:828)
        at java.util.AbstractCollection.addAll(AbstractCollection.java:305)
        at java.util.HashSet.<init>(HashSet.java:100)
        at org.jboss.cache.UnversionedNode.getKeysDirect(UnversionedNode.java:433)
        at org.jboss.cache.interceptors.CacheLoaderInterceptor.mustLoad(CacheLoaderInterceptor.java:303)
        at org.jboss.cache.interceptors.CacheLoaderInterceptor.loadIfNeeded(CacheLoaderInterceptor.java:168)
        at org.jboss.cache.interceptors.CacheLoaderInterceptor.invoke(CacheLoaderInterceptor.java:157)
        at org.jboss.cache.interceptors.ActivationInterceptor.invoke(ActivationInterceptor.java:67)
        at org.jboss.cache.interceptors.Interceptor.invoke(Interceptor.java:76)
        at org.jboss.cache.interceptors.UnlockInterceptor.invoke(UnlockInterceptor.java:37)
        at org.jboss.cache.interceptors.Interceptor.invoke(Interceptor.java:76)
        at org.jboss.cache.interceptors.PessimisticLockInterceptor.invoke(PessimisticLockInterceptor.java:203)
        at org.jboss.cache.interceptors.Interceptor.invoke(Interceptor.java:76)
        at org.jboss.cache.interceptors.NotificationInterceptor.invoke(NotificationInterceptor.java:32)
        at org.jboss.cache.interceptors.Interceptor.invoke(Interceptor.java:76)
        at org.jboss.cache.interceptors.TxInterceptor.handleNonTxMethod(TxInterceptor.java:298)
        at org.jboss.cache.interceptors.TxInterceptor.invoke(TxInterceptor.java:131)
        at org.jboss.cache.interceptors.Interceptor.invoke(Interceptor.java:76)
        at org.jboss.cache.interceptors.CacheMgmtInterceptor.invoke(CacheMgmtInterceptor.java:81)
        at org.jboss.cache.interceptors.Interceptor.invoke(Interceptor.java:76)
        at org.jboss.cache.interceptors.InvocationContextInterceptor.invoke(InvocationContextInterceptor.java:62)
        at org.jboss.cache.CacheImpl.invokeMethod(CacheImpl.java:3939)
        at org.jboss.cache.CacheImpl.get(CacheImpl.java:1441)
        at org.jboss.cache.CacheImpl.get(CacheImpl.java:1415)


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