[jbosscache-dev] Strange warning wihtin logfiles using JBoss Cache 3.1.0.GA under WebLogic 10.0

[Christian Hartmann]

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.html#performance-querycache-regions -->
        <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

 



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