I am chasing after a strange issue in pojo cache: There is a Vector that I am using it as a queue one Thread is pushing things into the tail and the other poping the head of the Vector.
The Vector is being aspectize with the following configuration (pojocache-aop.xml): | <?xml version="1.0" encoding="UTF-8"?> | <!-- | This is a variant of jboss-aop.xml. | --> | <aop> | <!-- If a POJO has a Replicable annotation, it will be asepectized. --> | | <!-- | Supports inheritance and polymorphism. It can either be a concrete class | or an interface. All sub-classes or interface implementors will be | | instrumeneted. | --> | <prepare expr="field(* $instanceof | | {...@org.jboss.cache.pojo.annotation.replicable}->*)" /> | | <!-- Work around that ensures annotated classes which do not access | | fields are instrumented --> | <introduction expr="class($instanceof | | {...@org.jboss.cache.pojo.annotation.replicable})"/> | | <!-- Array support --> | <!-- Comment entire section to disable --> | <arrayreplacement expr="class($instanceof | | {...@org.jboss.cache.pojo.annotation.replicable})"/> | <interceptor name="pojocache-array" | | class="org.jboss.cache.pojo.interceptors.dynamic.ArrayInterceptor"/> | <introduction expr="class($instanceof | | {...@org.jboss.cache.pojo.annotation.replicable})"> | <interfaces>org.jboss.cache.pojo.impl.ArrayInterceptable</interfaces> | </introduction> | <arraybind name="pojocache-array" type="READ_WRITE"> | <interceptor-ref name="pojocache-array"/> | </arraybind> | | </aop> | I have tried different cache configurations, the last one is like this: | Configuration config = new Configuration(); | config.setTransactionManagerLookupClass( JBossTransactionManagerLookup.class.getName() ); | config.setIsolationLevel(IsolationLevel.SERIALIZABLE); | config.setCacheMode(CacheMode.REPL_SYNC); | config.setLockAcquisitionTimeout(30000); | config.setClusterName("DefaultPartition"); | config.setConcurrencyLevel(5000); | config.setNodeLockingScheme(NodeLockingScheme.PESSIMISTIC); | | The vector is placed inside the pojo cache on JBoss 5.1.0 GA. And then I see the following problem happens from time to time: I see null elements apears inside the vector when I have cirtanly no code that puts it there and by inspecting the logs I see that it happens when there is concurrent activity on the Vector. Before I am going to open a bug on it, I would like to know if there is someone else that has similar expirience and maybe know about any work around to prevent this behavior. Regards Roman View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4266892#4266892 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4266892 _______________________________________________ jboss-user mailing list jboss-user@lists.jboss.org https://lists.jboss.org/mailman/listinfo/jboss-user