Hi,
I am trying out a simple standalone app where i, put in 50 elements in the
cache at a given fqn. I have enabled EvictionPolicy and set the maxNodes as 5.
However none of the nodes are getting evicted. Here's the code and the config
file:
package org.myapp;
|
| import org.jboss.cache.Fqn;
| import org.jboss.cache.PropertyConfigurator;
| import org.jboss.cache.TreeCache;
| import org.w3c.dom.Element;
|
|
|
| public class TestEviction {
| public static void main(String arg[])
| {
| try {
| TreeCache treeCache = new TreeCache();
|
| PropertyConfigurator config = new
PropertyConfigurator(); // configure tree cache. Needs to be in the classpath
| config.configure(treeCache,
"D:\\local-eviction-service.xml");
| treeCache.start();
|
| System.out.println("Eviction policy class name: "
+treeCache.getEvictionPolicyClass());
| System.out.println("Revisit time: " +
treeCache.getEvictionThreadWakeupIntervalSeconds());
|
| Fqn fqn = new Fqn("a/b/c");
| for(int i=0;i<50;i++)
| {
|
| System.out.println("Put#"+ (i+1));
| treeCache.put(fqn, new Integer(i), "Put#" + i);
| System.out.println("Exists fqn: " +
treeCache.exists(fqn));
| System.out.println("Exists object: " +
treeCache.exists(fqn,new Integer(i)));
| }
|
| /*
| * Check the contents of FQN
| */
| System.out.println("Contents of FQN: " +
treeCache._print(fqn));
|
| /*
| * Just verify whether eviction policy config was
picked up
| */
| Element ele = treeCache.getEvictionPolicyConfig();
| System.out.println(ele.toString());
|
| System.out.println("Before EXPLICITLY Calling evict of
FQN, Obj 1: " + treeCache.get(fqn,new Integer("1")));
| System.out.println("Before EXPLICITLY Calling evict of
FQN, Obj 48: " + treeCache.get(fqn,new Integer("48")));
|
| /*
| * manually evict
| */
| treeCache.evict(fqn);
|
| System.out.println("After EXPLICITLY Calling evict of
FQN, Obj 1: " + treeCache.get(fqn,new Integer("1")));
| System.out.println("After EXPLICITLY Calling evict of
FQN, Obj 48: " + treeCache.get(fqn,new Integer("48")));
|
| } catch (Exception e) {
| // TODO Auto-generated catch block
| e.printStackTrace();
| }
|
| }
| }
Config file:
<?xml version="1.0" encoding="UTF-8"?>
|
| <!-- =====================================================================
-->
| <!--
-->
| <!-- Sample TreeCache Service Configuration
-->
| <!--
-->
| <!-- =====================================================================
-->
|
| <server>
|
| <classpath codebase="./lib" archives="jboss-cache.jar, jgroups.jar"/>
|
|
| <!--
==================================================================== -->
| <!-- Defines TreeCache configuration
-->
| <!--
==================================================================== -->
|
| <mbean code="org.jboss.cache.TreeCache"
| name="jboss.cache:service=TreeCache">
|
| <depends>jboss:service=Naming</depends>
| <depends>jboss:service=TransactionManager</depends>
|
| <!--
| Configure the TransactionManager
| -->
| <!-- <attribute
name="TransactionManagerLookupClass">org.jboss.cache.JBossTransactionManagerLookup</attribute>
-->
|
|
| <!--
| Node locking level : SERIALIZABLE
| REPEATABLE_READ (default)
| READ_COMMITTED
| READ_UNCOMMITTED
| NONE
| -->
| <attribute name="IsolationLevel">REPEATABLE_READ</attribute>
|
| <!--
| Valid modes are LOCAL
| REPL_ASYNC
| REPL_SYNC
| -->
| <attribute name="CacheMode">LOCAL</attribute>
|
| <!-- Name of cluster. Needs to be the same for all clusters, in
order
| to find each other
| -->
| <attribute name="ClusterName">TreeCache-Cluster</attribute>
|
| <!-- JGroups protocol stack properties. Can also be a URL,
| e.g. file:/home/bela/default.xml
| <attribute name="ClusterProperties"></attribute>
| -->
|
| <attribute name="ClusterConfig">
| <config>
| <!-- UDP: if you have a multihomed machine,
| set the bind_addr attribute to the appropriate NIC IP
address -->
| <!-- UDP: On Windows machines, because of the media sense
feature
| being broken with multicast (even after disabling media
sense)
| set the loopback attribute to true -->
| <UDP mcast_addr="228.1.2.3" mcast_port="48866"
| ip_ttl="64" 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"
retransmit_timeout="600,1200,2400,4800"
| max_xmit_size="8192" 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>
|
|
| <!--
| The max amount of time (in milliseconds) we wait until the
| initial state (ie. the contents of the cache) are retrieved from
| existing members in a clustered environment
| -->
| <attribute name="InitialStateRetrievalTimeout">5000</attribute>
|
| <!--
| Number of milliseconds to wait until all responses for a
| synchronous call have been received.
| -->
| <attribute name="SyncReplTimeout">20000</attribute>
|
| <!-- Max number of milliseconds to wait for a lock acquisition -->
| <attribute name="LockAcquisitionTimeout">15000</attribute>
|
|
| <!-- Name of the eviction policy class. -->
| <attribute
name="EvictionPolicyClass">org.jboss.cache.eviction.LRUPolicy</attribute>
| <!-- Specific eviction policy configurations. This is LRU -->
| <attribute name="EvictionPolicyConfig">
| <config>
| <attribute name="wakeUpIntervalSeconds">2</attribute>
| <!-- Cache wide default -->
| <region name="/_default_">
| <attribute name="maxNodes">5</attribute>
| <attribute name="timeToLiveSeconds">0</attribute>
| </region>
| <region name="/a/b/c">
| <attribute name="maxNodes">5</attribute>
| <attribute name="timeToLiveSeconds">0</attribute>
| </region>
| </config>
| </attribute>
| </mbean>
|
|
| </server>
Any idea why this is not working?
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