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

[Manik Surtani (JIRA)]

     [ http://jira.jboss.com/jira/browse/JBCACHE-1355?page=all ]

Manik Surtani resolved JBCACHE-1355.
------------------------------------

    Resolution: Done

Fixed in trunk.  Will be released in the next CR for 2.2.0.

In the meanwhile, if you feel like trying it out, grab trunk and build it!  :-)

> java.util.ConcurrentModificationException under load in JBoss Cache 2.0.0.GA
> ----------------------------------------------------------------------------
>
>                 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
>            Priority: Critical
>             Fix For: 2.2.0.GA
>
>
> 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)
> Please don't hesitate to contact me for additional information. We use jboss cache at the production site, so it's quite critical for us to solve this issue. Thanks!

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