4:56 p.m.
I'm currently deploying multiple web applications (WAR's) to a JBoss 4.0.5 AS.
Each web application contains the necessary Cache & PojoCache resources, and it works
as expected until I attempt to share cached data between them. For example in web
application A I'm able to attach and find objects added from application A through the
PojoCache api, however if I attempt to find these object in web application B I receive
the following:
| java.lang.ExceptionInInitializerError
| at org.jboss.cache.pojo.impl.CachedType.analyzeFields(CachedType.java:215)
| ...
| Caused by: org.apache.commons.logging.LogConfigurationException:
java.lang.NullPointerException (Caused by java.lang.NullPointerException)
| at
org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:538)
| at
org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:235)
| at
org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:209)
| at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:353)
| at
org.jboss.cache.pojo.memory.PersistentReference.<clinit>(PersistentReference.java:44)
| ... 42 more
|
| Caused by: java.lang.NullPointerException
| at org.apache.commons.logging.impl.Log4jProxy$1.run(Log4jProxy.java:66)
| at java.security.AccessController.doPrivileged(Native Method)
| at
org.apache.commons.logging.impl.Log4jProxy.threadContextClassLoader(Log4jProxy.java:88)
| at
org.apache.commons.logging.impl.Log4jProxy.<init>(Log4jProxy.java:94)
|
| at
org.apache.commons.logging.impl.Log4JLogger.<init>(Log4JLogger.java:39)
| at sun.reflect.GeneratedConstructorAccessor24.newInstance(Unknown Source)
| at
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
| at java.lang.reflect.Constructor.newInstance(Constructor.java:494)
| at
org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:529)
| ... 46 more
|
The web applications both use their own log4j.xml files
(http://wiki.jboss.org/wiki/Wiki.jsp?page=Log4jRepositorySelector).
I have also tested the applications w/out their own logging and get the same exception.
I'm currently using the following cache configuration:
| <server>
| <mbean code="org.jboss.cache.pojo.jmx.PojoCacheJmxWrapper"
| name="jboss.cache:service=PojoCache">
| <depends>jboss:service=Naming</depends>
| <depends>jboss:service=TransactionManager</depends>
| <!--
| Configure the TransactionManager
| <attribute
name="TransactionManagerLookupClass">org.jboss.cache.transaction.DummyTransactionManagerLookup</attribute>
| -->
| <attribute
name="TransactionManagerLookupClass">org.jboss.cache.transaction.JBossTransactionManagerLookup</attribute>
| <!--
| Isolation level : SERIALIZABLE
| REPEATABLE_READ (default)
| READ_COMMITTED
| READ_UNCOMMITTED
| NONE
| -->
| <attribute
name="IsolationLevel">REPEATABLE_READ</attribute>
| <!--
| Valid modes are LOCAL
| REPL_ASYNC
| REPL_SYNC
| INVALIDATION_ASYNC
| INVALIDATION_SYNC
| -->
| <attribute name="CacheMode">REPL_SYNC</attribute>
| <!--
| Just used for async repl: use a replication queue
| -->
| <attribute name="UseReplQueue">false</attribute>
| <!--
| Replication interval for replication queue (in ms)
| -->
| <attribute name="ReplQueueInterval">0</attribute>
| <!--
| Max number of elements which trigger replication
| -->
| <attribute name="ReplQueueMaxElements">0</attribute>
| <!-- Name of cluster. Needs to be the same for all TreeCache nodes in a
| cluster in order to find each other. Note application sets this value at
| startup.
| -->
| <attribute
name="ClusterName">JBossCache-Cluster-1</attribute>
| <!--Uncomment next three statements to enable JGroups multiplexer.
| This configuration is dependent on the JGroups multiplexer being
| registered in an MBean server such as JBossAS. -->
| <!--
| <depends>jgroups.mux:name=Multiplexer</depends>
| <attribute
name="MultiplexerService">jgroups.mux:name=Multiplexer</attribute>
| <attribute
name="MultiplexerStack">fc-fast-minimalthreads</attribute>
| -->
| <!-- JGroups protocol stack properties.
| ClusterConfig isn't used if the multiplexer is enabled and successfully
initialized.
| -->
| <attribute name="ClusterConfig">
| <config>
| <UDP bind_addr="127.0.0.1"
| mcast_addr="228.10.10.10"
| mcast_port="45588"
| tos="8"
| ucast_recv_buf_size="20000000"
| ucast_send_buf_size="640000"
| mcast_recv_buf_size="25000000"
| mcast_send_buf_size="640000"
| loopback="false"
| discard_incompatible_packets="true"
| max_bundle_size="64000"
| max_bundle_timeout="30"
| use_incoming_packet_handler="true"
| ip_ttl="2"
| enable_bundling="false"
| enable_diagnostics="true"
| use_concurrent_stack="true"
| thread_naming_pattern="pl"
| thread_pool.enabled="true"
| thread_pool.min_threads="1"
| thread_pool.max_threads="25"
| thread_pool.keep_alive_time="30000"
| thread_pool.queue_enabled="true"
| thread_pool.queue_max_size="10"
| thread_pool.rejection_policy="Run"
| oob_thread_pool.enabled="true"
| oob_thread_pool.min_threads="1"
| oob_thread_pool.max_threads="4"
| oob_thread_pool.keep_alive_time="10000"
| oob_thread_pool.queue_enabled="true"
| oob_thread_pool.queue_max_size="10"
| oob_thread_pool.rejection_policy="Run"/>
| <PING timeout="2000" num_initial_members="3"/>
| <MERGE2 max_interval="30000"
min_interval="10000"/>
| <FD_SOCK/>
| <FD timeout="10000" max_tries="5"
shun="true"/>
| <VERIFY_SUSPECT timeout="1500"/>
| <pbcast.NAKACK max_xmit_size="60000"
| use_mcast_xmit="false" gc_lag="0"
| retransmit_timeout="300,600,1200,2400,4800"
| discard_delivered_msgs="true"/>
| <UNICAST timeout="300,600,1200,2400,3600"/>
| <pbcast.STABLE stability_delay="1000"
desired_avg_gossip="50000"
| max_bytes="400000"/>
| <pbcast.GMS print_local_addr="true"
join_timeout="5000"
| join_retry_timeout="2000" shun="false"
| view_bundling="true"
view_ack_collection_timeout="5000"/>
| <FRAG2 frag_size="60000"/>
| <pbcast.STREAMING_STATE_TRANSFER
use_reading_thread="true"/>
| <!-- <pbcast.STATE_TRANSFER/> -->
| <pbcast.FLUSH timeout="0"/>
| </config>
| </attribute>
| <!--
| Whether or not to fetch state on joining a cluster
| NOTE this used to be called FetchStateOnStartup and has been renamed to be more
descriptive.
| -->
| <attribute name="FetchInMemoryState">true</attribute>
| <!--
| The max amount of time (in milliseconds) we wait until the
| state (ie. the contents of the cache) are retrieved from
| existing members in a clustered environment
| -->
| <attribute name="StateRetrievalTimeout">15000</attribute>
| <!--
| Number of milliseconds to wait until all responses for a
| synchronous call have been received.
| -->
| <attribute name="SyncReplTimeout">15000</attribute>
| <!-- Max number of milliseconds to wait for a lock acquisition -->
| <attribute
name="LockAcquisitionTimeout">10000</attribute>
| <!--
| Indicate whether to use region based marshalling or not. Set this to true if
you are running under a scoped
| class loader, e.g., inside an application server. Default is
"false".
| -->
| <attribute
name="UseRegionBasedMarshalling">true</attribute>
| </mbean>
| </server>
|
Any hints or pointers would be appreciated.
Thanks
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