ehcache (disk overflow turned off)

gistfile1.txt

"Thread-3" prio=6 tid=0x04858c00 nid=0x19bc waiting on condition [0x081cf000]
   java.lang.Thread.State: WAITING (parking)
	at sun.misc.Unsafe.park(Native Method)
	- parking to wait for  <0x15fe9cd0> (a java.util.concurrent.locks.ReentrantReadWriteLock$NonfairSync)
	at java.util.concurrent.locks.LockSupport.park(LockSupport.java:156)
	at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:811)
	at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(AbstractQueuedSynchronizer.java:842)
	at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:1178)
	at java.util.concurrent.locks.ReentrantReadWriteLock$WriteLock.lock(ReentrantReadWriteLock.java:807)
	at net.sf.ehcache.store.chm.SelectableConcurrentHashMap$MemoryStoreSegment.remove(SelectableConcurrentHashMap.java:370)
	at net.sf.ehcache.store.chm.SelectableConcurrentHashMap$MemoryStoreSegment.remove(SelectableConcurrentHashMap.java:262)
	at net.sf.ehcache.store.chm.ConcurrentHashMap.remove(ConcurrentHashMap.java:930)
	at net.sf.ehcache.store.MemoryStore.remove(MemoryStore.java:346)
	at net.sf.ehcache.store.MemoryStore.removeAll(MemoryStore.java:429)
	at net.sf.ehcache.store.MemoryStore.flush(MemoryStore.java:450)
	at net.sf.ehcache.store.MemoryStore.dispose(MemoryStore.java:441)
	- locked <0x161d8728> (a net.sf.ehcache.store.NotifyingMemoryStore)
	at net.sf.ehcache.store.FrontEndCacheTier.dispose(FrontEndCacheTier.java:475)
	at net.sf.ehcache.Cache.dispose(Cache.java:2503)
	- locked <0x15f52008> (a net.sf.ehcache.Cache)
	at net.sf.ehcache.CacheManager.shutdown(CacheManager.java:1260)
	- locked <0x216abc78> (a java.lang.Class for net.sf.ehcache.CacheManager)