[jboss-user] [JBoss Cache: Core Edition] - event queue size is at 98% threshold

[lovelyliatroim]

Hi Guys,
 Im seeing alot of this in my log files,

anonymous wrote : 
  | 16:38:40,367 [STREAMING_STATE_TRANSFER sender,10.251.145.205:53173] WARN  org.jboss.cache.RegionImpl  - putNodeEvent(): eviction node event queue size is at 98% threshold value of capacity: 200000 Region: /realtime/quotes/ You will need to reduce the wakeUpIntervalSeconds parameter.
  | 


Now whats happening is this, my app receives a notification to transfer a region to another node, the node transfers the data which can be up to 500,000 records from that node to the other node. After transfer it will look to delete/remove the 500,000 records from its cache. When the deletion occurs I assume it starts creating all the node events on the queue.

Now wakeUpInterval is set to 1 so that cant be made any better/quicker but the queue size is obviously too small, this kind of event should happen rarely, its only if something goes wrong.  

What are the implications of increasing the eventQueue size?? Just more memory i would say. What happens when events are fired and cant get on the eviction queue?? Im seeing something that suggests to me that its dropped because after i call the remove for a region, i still see records in that region when it should be empty, does that make sense to you guys?? If not then its something else going on!! 

Also is there a difference between cache.removeRegion(FQN) and cache.removeNode(FQN)?? Currently using removeNode(), will try with region and see if it makes any difference, otherwise i will have to up the queueSize.

Thanks for your time,
LL



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