Hi all,
I use TreeCache (JbossCache 1.4.1 SP3 with Jboss 4.0.5GA) with a cache
configured in a clustered environnement.
I set in PESSIMISTIC/SERIALIZABLE mode and I want to lock only one node when I
read or write to it.
For example, if I have /root/subroot/A and /root/subroot/B, I read node A, I
want to have an exclusive lock on it , but I want also to read with another
transaction node B.
But at this moment, the cache is entirely locked! I cannot read node B at all.
<?xml version="1.0" encoding="UTF-8" ?>
| <server>
| <classpath codebase="./lib" archives="jboss-cache.jar, jgroups.jar" />
| <mbean code="org.jboss.cache.TreeCache"
name="jboss.cache:service=MyTreeCache">
| <depends>jboss:service=Naming</depends>
| <depends>jboss:service=TransactionManager</depends>
| <depends>jboss.jca:service=DataSourceBinding,name=my-ds</depends>
|
| <attribute
name="TransactionManagerLookupClass">org.jboss.cache.JBossTransactionManagerLookup</attribute>
| <attribute name="NodeLockingScheme">PESSIMISTIC</attribute>
| <attribute name="IsolationLevel">READ_UNCOMMITTED</attribute>
|
| <attribute name="CacheMode">REPL_SYNC</attribute>
| <attribute name="ClusterName">
| master-${jboss.partition.name:Cluster}
| </attribute>
| <attribute name="ClusterConfig">
| <config>
| <UDP mcast_addr="${jboss.partition.udpGroup:228.2.2.14}"
| mcast_port="48252"
ip_ttl="${jgroups.mcast.ip_ttl:2}"
| ip_mcast="true" mcast_send_buf_size="150000"
| mcast_recv_buf_size="80000"
ucast_send_buf_size="150000"
| ucast_recv_buf_size="80000" loopback="false" />
| <PING timeout="2000" num_initial_members="3"
| up_thread="false" down_thread="false" />
| <MERGE2 min_interval="10000" max_interval="20000" />
| <FD shun="true" up_thread="true" down_thread="true" />
| <VERIFY_SUSPECT timeout="1500" up_thread="false"
| down_thread="false" />
| <pbcast.NAKACK gc_lag="50" max_xmit_size="8192"
| retransmit_timeout="600,1200,2400,4800"
up_thread="false"
| down_thread="false" />
| <UNICAST timeout="600,1200,2400" window_size="100"
| min_threshold="10" down_thread="false" />
| <pbcast.STABLE desired_avg_gossip="20000"
| up_thread="false" down_thread="false" />
| <FRAG frag_size="8192" down_thread="false"
| up_thread="false" />
| <pbcast.GMS join_timeout="5000"
| join_retry_timeout="2000" shun="true"
print_local_addr="true" />
| <pbcast.STATE_TRANSFER up_thread="false"
| down_thread="false" />
| </config>
| </attribute>
| <attribute name="InitialStateRetrievalTimeout">6000</attribute>
| <attribute name="SyncReplTimeout">10000</attribute>
| <attribute name="LockAcquisitionTimeout">4000</attribute>
|
| </mbean>
| </server>
How can achieve my use case ?
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