Re: [rules-users] Multi Access to Stateful Session

I updated the MessageControl fact as follows and the same issue still occurs: private Long currentPosition = new Long(0); private Set<Long> excludedPositions = new HashSet<Long>(); public synchronized void addPositionToExclusionList(Long position) { excludedPositions.add(position); } public synchronized Long getCurrentPosition() { return currentPosition; } public synchronized void moveCurrentPositionForward(Integer value) { currentPosition += value; if (currentPosition % 20000 == 0) { System.out.println(currentPosition); } } public synchronized boolean atExcludedPosition() { return excludedPositions.contains(currentPosition); } Not sure what else could occur between the insertions and the rule execution that would be an issue... laune wrote > > So it looks like a race condition. > > There is one chink in the snchronizing armour of class MessageControl. > The Map excludedPositions (although in itself synchronized on its own > lock) is exposed via the getExcludedPositions. Thus, synchronization > between currentPosition and excludedPositions is broken. I can't say > whether this matters, but just try and add delegating methods to > MessageControl and remove getExcludedPositions. (And use a plain > HashSet - synchronization is provided by MessageControl.) > > Obviously, rules will have to use something like > atExcludedPosition == true > when the Map is fully privatized. > > -W > > > On 02/04/2012, gboro54 &lt;gboro54@&gt; wrote: >> A gap would have to occur somewhere but I am not sure how or why. >> Since I am using the same data for each test case, the outcome should >> be the same but 75% of the time to position stops at a random point >> and thus allows messages to backup in memory >> >> On Mon, Apr 2, 2012 at 12:19 PM, laune [via Drools] >> &lt;ml-node+s46999n3878174h55@.nabble&gt; wrote: >>> What is the current position value in the controller when it blocks? A >>> regular message rank or one of those not to be processed or both? >>> >>> Are you sure that message ranks are increasing without gaps except >>> those in the excluded position map? >>> >>> -W >>> >>> On 02/04/2012, gboro54 <[hidden email]> wrote: >>> >>>> Forgo to mention each time a position is added to the excluded position >>>> map, >>>> the insertOrUpdate method is called on the session wrapper. >>>> >>>> -- >>>> View this message in context: >>>> >>>> http://drools.46999.n3.nabble.com/Multi-Access-to-Stateful-Session-tp3877... >>>> Sent from the Drools: User forum mailing list archive at Nabble.com. >>>> _______________________________________________ >>>> rules-users mailing list >>>> [hidden email] >>>> https://lists.jboss.org/mailman/listinfo/rules-users >>>> >>> _______________________________________________ >>> rules-users mailing list >>> [hidden email] >>> https://lists.jboss.org/mailman/listinfo/rules-users >>> >>> >>> ________________________________ >>> If you reply to this email, your message will be added to the discussion >>> below: >>> http://drools.46999.n3.nabble.com/Multi-Access-to-Stateful-Session-tp3877... >>> To unsubscribe from Multi Access to Stateful Session, click here. >>> NAML >> >> >> -- >> View this message in context: >> http://drools.46999.n3.nabble.com/Multi-Access-to-Stateful-Session-tp3877... >> Sent from the Drools: User forum mailing list archive at Nabble.com. > _______________________________________________ > rules-users mailing list > rules-users@.jboss > https://lists.jboss.org/mailman/listinfo/rules-users > -- View this message in context: http://drools.46999.n3.nabble.com/Multi-Access-to-Stateful-Session-tp3877... Sent from the Drools: User forum mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users