Hello.
My JCS live in a WAR deployed in JBoss. I am trying to shutdown my
disc based JCS during redeployment. To do this, I have a servlet
Filter that has the following method. Is this the best way to detect
undeployment?
public void destroy() {
if(!jcsdown) {
CompositeCacheManager compositeCacheManager =
CompositeCacheManager.getInstance();
compositeCacheManager.release();
compositeCacheManager.shutDown();
jcsdown = true;
}
}
It looks like the cache are shut down and the .key are updated. The
object in memory are however not spooled to disc. JCS logs the
following exception.
09:54:11,594 ERROR [IndexedDiskCache] Region [myRegion] Failure
updating element, key: myKey old: null
java.lang.InterruptedException
at
EDU.oswego.cs.dl.util.concurrent.WriterPreferenceReadWriteLock
$WriterLock.acquire(WriterPreferenceReadWriteLock.java:234)
at
org.apache.jcs.auxiliary.disk.indexed.IndexedDiskCache.doUpdate
(IndexedDiskCache.java:433)
at org.apache.jcs.auxiliary.disk.AbstractDiskCache
$MyCacheListener.handlePut(AbstractDiskCache.java:603)
at org.apache.jcs.engine.CacheEventQueue$PutEvent.doRun
(CacheEventQueue.java:688)
at org.apache.jcs.engine.CacheEventQueue
$AbstractCacheEvent.run(CacheEventQueue.java:607)
at org.apache.jcs.engine.CacheEventQueue$QProcessor.run
(CacheEventQueue.java:575)
What should I do to make the object in memory spooled to disc during
shutdown and prevent this InterruptedException?
Attached is the complete log output.
Regards,
- Tore.
09:54:11,182 INFO [CompositeCache] In DISPOSE, [myRegion] fromRemote
[false]
Region Name = myRegion
HitCountRam = 0
HitCountAux = 0
---------------------------LRU Memory Cache
List Size = 1
Map Size = 1
Put Count = 1
Hit Count = 0
Miss Count = 1
---------------------------Indexed Disk Cache
Is Alive = true
Key Map Size = 0
Data File Length = 0
Hit Count = 0
Bytes Free = 0
Optimize Operation Count = 0
Times Optimized = 0
Recycle Count = 0
Recycle Bin Size = 0
Startup Size = 0
Purgatory Hits = 0
Purgatory Size = 0
Working = true
Alive = false
Empty = true
Size = 0
09:54:11,182 INFO [CompositeCache] In DISPOSE, [myRegion] auxiliary
[EMAIL PROTECTED]
09:54:11,183 INFO [CacheEventQueue] Cache event queue created:
CacheEventQueue [listenerId=-1825356115, cacheName=myRegion]
09:54:11,184 INFO [CompositeCache] In DISPOSE, [myRegion] put 1 into
auxiliary [EMAIL PROTECTED]
09:54:11,285 INFO [AbstractDiskCache] No longer waiting for event
queue to finish: Cache Event Queue
Working = true
Alive = true
Empty = true
Size = 0
09:54:11,285 INFO [AbstractDiskCache] In dispose, destroying event
queue.
09:54:11,285 INFO [CacheEventQueue] Destroying queue, stats = Cache
Event Queue
Working = true
Alive = false
Empty = true
Size = 0
09:54:11,286 INFO [CacheEventQueue] Cache event queue destroyed:
CacheEventQueue [listenerId=-1825356115, cacheName=myRegion]
09:54:11,594 ERROR [IndexedDiskCache] Region [myRegion] Failure
updating element, key: myKey old: null
java.lang.InterruptedException
at
EDU.oswego.cs.dl.util.concurrent.WriterPreferenceReadWriteLock
$WriterLock.acquire(WriterPreferenceReadWriteLock.java:234)
at
org.apache.jcs.auxiliary.disk.indexed.IndexedDiskCache.doUpdate
(IndexedDiskCache.java:433)
at org.apache.jcs.auxiliary.disk.AbstractDiskCache
$MyCacheListener.handlePut(AbstractDiskCache.java:603)
at org.apache.jcs.engine.CacheEventQueue$PutEvent.doRun
(CacheEventQueue.java:688)
at org.apache.jcs.engine.CacheEventQueue
$AbstractCacheEvent.run(CacheEventQueue.java:607)
at org.apache.jcs.engine.CacheEventQueue$QProcessor.run
(CacheEventQueue.java:575)
09:54:11,690 INFO [IndexedDiskCache] Region [myRegion] Shutdown
complete.
09:54:11,690 INFO [CompositeCache] In DISPOSE, [myRegion] disposing
of memory cache.
09:54:11,690 INFO [AbstractMemoryCache] Memory Cache dispose
called. Shutting down shrinker thread if it is running.
09:54:11,691 INFO [CompositeCache] In DISPOSE, [myRegion] fromRemote
[false]
Region Name = myRegion
HitCountRam = 0
HitCountAux = 0
---------------------------LRU Memory Cache
List Size = 0
Map Size = 0
Put Count = 1
Hit Count = 0
Miss Count = 1
---------------------------Indexed Disk Cache
Is Alive = false
Key Map Size = 0
Data File Length = -1
Hit Count = 0
Bytes Free = 0
Optimize Operation Count = 0
Times Optimized = 0
Recycle Count = 0
Recycle Bin Size = 0
Startup Size = 0
Purgatory Hits = 0
Purgatory Size = 0
Working = true
Alive = false
Empty = true
Size = 0
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