Race condition in RecentlyVisitedManager.addItemToHistory

011-09-02 15:03:40,806 WARN  [btpool0-54 ] org.hibernate.util.JDBCExceptionReporter org.hibernate.util.JDBCExceptionReporter-logExceptions - SQL Error: 0, SQLState: null
2011-09-02 15:03:40,907 ERROR [btpool0-54 ] org.hibernate.util.JDBCExceptionReporter org.hibernate.util.JDBCExceptionReporter-logExceptions - Batch entry 0 insert into cru_recently_visited (cru_last_viewed, cru_user_name, cru_item_type, cru_entity_id) values (1314
939820407, tstcruser4, atlassian-review, CR-ATL-542) was aborted.  Call getNextException to see the cause.
2011-09-02 15:03:40,908 WARN  [btpool0-54 ] org.hibernate.util.JDBCExceptionReporter org.hibernate.util.JDBCExceptionReporter-logExceptions - SQL Error: 0, SQLState: 23505
2011-09-02 15:03:40,908 ERROR [btpool0-54 ] org.hibernate.util.JDBCExceptionReporter org.hibernate.util.JDBCExceptionReporter-logExceptions - ERROR: duplicate key value violates unique constraint "cru_recently_visited_pkey"
  Detail: Key (cru_user_name, cru_item_type, cru_entity_id)=(tstcruser4, atlassian-review, CR-ATL-542) already exists.
2011-09-02 15:03:40,910 ERROR [btpool0-54 ] org.hibernate.event.def.AbstractFlushingEventListener org.hibernate.event.def.AbstractFlushingEventListener-performExecutions - Could not synchronize database state with sessionorg.hibernate.exception.ConstraintViolationException: Could not execute JDBC batch update
        at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:96)
        at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:66)
        at org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:275)
        at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:262)
        at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:178)
        at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:321)
        at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:51)
        at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1206)
        at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:375)
        at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:137)
        at com.cenqua.crucible.hibernate.SessionState.commit(SessionState.java:101)
        at com.cenqua.crucible.hibernate.SessionState.commitTx(SessionState.java:67)
        at com.cenqua.crucible.hibernate.HibernateUtil.commitTransaction(HibernateUtil.java:228)
        at com.atlassian.fisheye.user.DefaultRecentlyVisitedManager.addItemToHistory(DefaultRecentlyVisitedManager.java:84)
        at com.atlassian.crucible.actions.ReviewAction.execute(ReviewAction.java:110)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at com.opensymphony.xwork.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:358)
        at com.opensymphony.xwork.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:218)
        at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:192)
        at com.cenqua.crucible.interceptors.ReviewInterceptor.intercept(ReviewInterceptor.java:51)
        at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
        at com.cenqua.crucible.interceptors.CruciblePermissionInterceptor.intercept(CruciblePermissionInterceptor.java:52)
        at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)