Ryan Fong created JCS-161:
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Summary: dynamic regions leak memory upon dispose due to
ShrinkerTask
Key: JCS-161
URL: https://issues.apache.org/jira/browse/JCS-161
Project: Commons JCS
Issue Type: Bug
Components: Composite Cache
Affects Versions: jcs-2.0-beta-1
Reporter: Ryan Fong
Priority: Critical
Creating a dynamic region via JCS.defineRegion and then destroying it via
ComposeCacheManager.free does not fully reclaim all memory when the memory
shrinker is enabled.
When shrinking is enabled, the
org.apache.commons.jcs.engine.memory.shrinking.ShrinkerThread retains a pointer
to CompositeCache which is never reclaimed.
A simple solution would be to have
org.apache.commons.jcs.engine.control.CompositeCache.setScheduledExecutorService(ScheduledExecutorService)
retain the ScheduledFuture as a field. When CompositeCache.disposed is called,
we should call ScheduledFuture.cancel.
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