Hibernate version:3.3.0.CR1

JBossCache version:2.1.1.CR2

Under heavy load, several of the objects in my application reach the capacity threshold for JBossCache which generates the following warning and locks up the calls to select them.

eviction node event queue size is at 98% threshold value of capacity: 200000 Region: /org/somepath/MyClass/ENTITY You will need to reduce the wakeUpIntervalSeconds parameter.

I already have the wakeUpIntervalSeconds set to the minimum value of 1. I've tried increasing the eventQueueSize attribute but it is not being passed through to JBossCache. This seems to be a disconnect between the Hibernate initialization that passes the configurations on the JBossCache. Here is my EvictionPolicyConfig.



All attributes appear to be flowing through other than the eventQueueSize although I have not found a way to confirm that wakeUpIntervalSeconds is being passed through correctly. Note that I've tried the attribute both inline as a sub attribute of the region and as an attribute at the config level. Here is how I'm checking the value on the eventQueueSize.

jbcRegion.getEvictionRegionConfig().getEventQueueSize();

Even though I configure it for 500000, it still is set to 200000. I can programatically adjust it but this feels like a hack since the XML configuration should take care of this. Is this a bug in Hibernate 3.3.0.CR1?

I'm finding that even with programatically increasing the eventQueueSize to 500000, it still locks up the cache under load after less than one hour and the following message is displayed.

eviction node event queue size is at 98% threshold value of capacity: 500000 Region: /org/somepath/MyClass/ENTITY You will need to reduce the wakeUpIntervalSeconds parameter.

If I roll back to JBossCache 1.4.1.x, the problem goes away. Do you think this would be a problem with JBossCache or is it the integration between Hibernate and JBossCache. It's almost like the eviction thread does not ever run or it blocks and gets hung. Anyone else having this issue or know of a resolution?