7:48 a.m.
Hi there,
we have set up JBoss-Cache 3.1.0.GA (hibernate-jbosscache2 3.3.2.GA) as a 2nd-Level-Cache
for Hibernate running under WebLogic 10.0 successfully within a Cluster running different
nodes on different machines. The Cache configuration seems to work without any errors or
any disapperance of data. However, we are facing a strange warning within our logs for the
JBoss-Cache:
"WARN ;Multiplexer-1;Unknown replication version [999]. Falling back to the default
marshaller installed."
We are using this configuration for the persistence.xml
[...]
<property name="hibernate.cache.use_second_level_cache"
value="true/>
<property name="hibernate.cache.use_query_cache"
value="true"/>
<property name="hibernate.cache.region.factory_class"
value="org.hibernate.cache.jbc2.SharedJBossCacheRegionFactory"/>
<property name="hibernate.cache.use_structured_entries"
value="true"/>
<property name="hibernate.cache.use_structured_cache_entries"
value="true"/>
<property name="hibernate.cache.region.jbc2.cfg.shared"
value="treecache.xml"/>
[...]
and this is our configuration for the treecache.xml
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
<?xml version="1.0" encoding="UTF-8"?>
<!--
<jbosscache xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="urn:jboss:jbosscache-core:config:3.1"
xsi:schemaLocation="urn:jboss:jbosscache-core:config:3.1
/schema/jbosscache-config-3.1.xsd">
-->
<jbosscache xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="urn:jboss:jbosscache-core:config:3.1">
<transaction
transactionManagerLookupClass="org.jboss.cache.transaction.GenericTransactionManagerLookup"
syncRollbackPhase="false"
syncCommitPhase="false"
/>
<locking
isolationLevel="REPEATABLE_READ"
lockParentForChildInsertRemove="false"
lockAcquisitionTimeout="15000"
nodeLockingScheme="mvcc"
writeSkewCheck="false"
useLockStriping="true"
concurrencyLevel="500"
/>
<serialization
objectInputStreamPoolSize="12"
objectOutputStreamPoolSize="14"
version="3.0.0"
marshallerClass="org.jboss.cache.marshall.CacheMarshaller300"
useLazyDeserialization="false"
useRegionBasedMarshalling="true"/>
<startup regionsInactiveOnStartup="true"/>
<eviction wakeUpInterval="5">
<default algorithmClass="org.jboss.cache.eviction.LRUAlgorithm"
actionPolicyClass="org.jboss.cache.eviction.DefaultEvictionActionPolicy"
eventQueueSize="200000">
<property name="maxNodes" value="10000"/>
<property name="timeToLive" value="1000"/>
</default>
<region name="/_default_"
algorithmClass="org.jboss.cache.eviction.LRUAlgorithm"
actionPolicyClass="org.jboss.cache.eviction.DefaultEvictionActionPolicy"
eventQueueSize="100000">
<property name="maxNodes" value="10000"/>
<property name="timeToLive" value="1000"/>
<property name="minTimeToLive" value="120"/>
</region>
<!-- Never evict the UpdateTimeStampsCache according to
http://docs.jboss.org/hibernate/stable/core/reference/en/html/performance...
-->
<region name="/TS"
algorithmClass="org.jboss.cache.eviction.NullEvictionAlgorithm"
actionPolicyClass="org.jboss.cache.eviction.DefaultEvictionActionPolicy"
eventQueueSize="100000">
</region>
</eviction>
<clustering mode="replication" clusterName="${uniqueDI}">
<async useReplQueue="true" replQueueInterval="10000"
replQueueMaxElements="500"
serializationExecutorPoolSize="20"
serializationExecutorQueueSize="5000000"/>
<stateRetrieval timeout="20000"
fetchInMemoryState="false"/>
<jgroupsConfig multiplexerStack="udp"/>
</clustering>
</jbosscache>
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
We tried to change marshallerClass to
"org.jboss.cache.marshall.VersionAwareMarshaller", but then we are facing a Null
Pointer Exception:
2011-01-14 12:37:42,655;ERROR;AsyncReplicationProcessor-1;java.lang.NullPointerException:
<no message available (3)>
Stack trace:
org.jboss.cache.marshall.VersionAwareMarshaller.objectToObjectStream(VersionAwareMarshaller.java:340)
org.jboss.cache.marshall.VersionAwareMarshaller.objectToBuffer(VersionAwareMarshaller.java:182)
org.jboss.cache.marshall.VersionAwareMarshaller.objectToBuffer(VersionAwareMarshaller.java:52)
org.jboss.cache.marshall.CommandAwareRpcDispatcher$ReplicationTask.call(CommandAwareRpcDispatcher.java:369)
Is there anybody who can help and might tell us what is wrong here?
Any help will be appreciated.
Regards,
Christian
Steria Mummert Consulting AG
Vorsitzender des Aufsichtsrates: Jürgen Sponnagel - Vorstand: Oliver Nazet (Vors.), Dr.
Reinhard Liedl, Dr. Fritz Moser
Gesellschaftssitz: Hamburg - HR B 61 116 Amtsgericht Hamburg - USt-ID-Nr.: DE118671351
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