Terracotta Discussion Forums (LEGACY READ-ONLY ARCHIVE)

I am getting the following Warnings

Code:

 Jun 15, 2012 1:55:41 PM net.sf.ehcache.config.CacheConfiguration warnSizeOfPolicyConfiguration
 [b]WARNING: Terracotta clustered cache: packageCache has a sizeOf policy configuration specificed. SizeOfPolicyConfiguration is unsupported for Terracotta clustered caches.[/b]
 Jun 15, 2012 1:55:41 PM net.sf.ehcache.store.offheap.EhcacheConcurrentOffHeapClockCache create
 INFO: Creating Off-Heap Area Using Config
  Heuristic Configuration: local-shadow-cache-for-packageCache-uuid-W7-2UA13310HT/172.16.188.28-6cabdc51-478f-484b-baa2-1d61ee029339
 Maximum Size (specified)   : 512MB
 Minimum Chunk Size         : 128MB
 Maximum Chunk Size         : 512MB
 Concurrency                : 16
 Initial Segment Table Size : 1K slots
 Segment Data Page Size     : 1MB

Code:

WARNING: The configured limit of 1,000 object references was reached while attempting to calculate the size of the object graph. This can be avoided by adding stop points with @IgnoreSizeOf annotations. Since the CacheManger or Cache <sizeOfPolicy> elements maxDepthExceededBehavior is set to "abort", the sizing operation has stopped and the reported cache size is not accurate. If performance degradation is NOT an issue at the configured limit, raise the limit value using the CacheManager or Cache <sizeOfPolicy> elements maxDepth attribute. For more information, see the Ehcache configuration documentation.

Is there a way to adjust the SizeOfPolicy on a Terracotta cluster cache?

Does this link help?

http://www.ehcache.org/documentation/configuration/cache-size#built-in-sizing-computation-and-enforcement

--Ari

The article does help a little, but not with dealing with the warnings.

I should have mentioned earlier that I am storing arrayList of objects. So i am not sure the if the suppression using @IgnoreSizeOf is an option.

Weirdly, after building my cache, on my rackRateCache it says 4000 instead of 1000, like the rest, here is my echache xml

Any ideas why only that one cache has a different MaxDepth?

Code:

<ehcache xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 	xsi:noNamespaceSchemaLocation="http://www.ehcache.org/ehcache.xsd"
 		maxBytesLocalHeap="2g" maxBytesLocalOffHeap="2g" maxBytesLocalDisk="2g">
 	<sizeOfPolicy maxDepth="4000" maxDepthExceededBehavior="continue"/>
 	<diskStore path="java.io.tmpdir" />
 
 
 	<cache  name="rateGridCache" maxBytesLocalOffHeap="512m" eternal="false"
 		timeToIdleSeconds="3600" timeToLiveSeconds="1800" overflowToDisk="false"
 		maxElementsOnDisk="10000" >
 		<terracotta />	
 		
 	</cache>
 
 	<cache  name="packageCache" maxBytesLocalOffHeap="512m" eternal="false"
 		timeToIdleSeconds="3600" timeToLiveSeconds="1800" overflowToDisk="false"
 		maxElementsOnDisk="10000">
 		<sizeOfPolicy maxDepth="3000" />
 		<terracotta /> 
 	</cache>
 	
 	<cache  name="cache_pkgsRateCode" maxBytesLocalOffHeap="32m" eternal="false"
 		timeToIdleSeconds="3600" timeToLiveSeconds="1800" overflowToDisk="false"
 		maxElementsOnDisk="10000">
 		<terracotta /> 
 	</cache>
 	
 	<cache  name="cache_translation" maxBytesLocalOffHeap="32m" eternal="false"
 		timeToIdleSeconds="3600" timeToLiveSeconds="1800" overflowToDisk="false"
 		maxElementsOnDisk="10000">
 		<terracotta /> 
 	</cache>
 	
 	<cache  name="cache_rackRate" maxBytesLocalOffHeap="32m" eternal="false"
 		timeToIdleSeconds="3600" timeToLiveSeconds="1800" overflowToDisk="false"
 		maxElementsOnDisk="10000">
 		<terracotta /> 
 	</cache>
 	
 	<cache  name="cache_prodAttributeMap" maxBytesLocalOffHeap="32m" eternal="false"
 		timeToIdleSeconds="3600" timeToLiveSeconds="1800" overflowToDisk="false"
 		maxElementsOnDisk="10000">
 		<terracotta /> 
 	</cache>
 	
 	<terracottaConfig url="localhost:9510,localhost:9540" />
 </ehcache>

Their are two reasons that someone might get that warning.

1) An object that is being put in the cache has a reference to a graph of objects that was larger than expected and or referring to something unintentionally.

2) You may just have large object graphs

The warning is intended for people with situation 1. If you are in situation 2 then just raise the limit and the warning will go away.

It can be configured with this:

<sizeOfPolicy maxDepth="100" maxDepthExceededBehavior="abort"/>

more details in this doc:

http://ehcache.org/documentation/configuration/cache-size

I read through the document but as mentioned I get the following warning as well

WARNING: Terracotta clustered cache: packageCache has a sizeOf policy configuration specificed. SizeOfPolicyConfiguration is unsupported for Terracotta clustered caches.'

Am I configuring the wrong xml?

AFAICT, you are not and this is a "bug".
I've created EHC-948 to address this asap!

Just my luck to find a bug, o well, thanks for the prompt response and I look forward to the patch.

This made me think of this xkcd: http://xkcd.com/979/

Will make sure I update this thread when this is fixed then... hopefully before 2021 ;)