JGroups multicast works, JBC cluster doesn't form with same

[chtimi2]

I'm trying JBC clustering, but so far the cluster never goes past 0 nodes.
Yes not 1, but 0 nodes!

cache = org.jboss.cache.pojo.impl.PojoCacheImpl cache=org.jboss.cache.DataContainerImpl [0 nodes, 0 locks] delegate=org.jboss.cache.pojo.impl.PojoCacheDelegate@5bd978 types=0

I have tried some tests to see where it might come from:

1/ The JGroups drawing test at http://www.jgroups.org/tutorial/html/ch01.html works perfectly, so at least multicast works.

2/ The JBoss cache tutorial test with the 2 little clients works

3/ My two nodes using the default JGroups conf (used by 1/)

<clustering mode="replication">
 <jgroupsConfig configFile="udp.xml" />
 <sync />
</clustering>

-->0 nodes on both JVMs

4/ My two nodes using the sample conf total-replication.xml (used by 2/),
and supplying the same runtime arguments as 2/

-Djava.net.preferIPv4Stack=true
-Dbind.address=127.0.0.1

<jbosscache xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="urn:jboss:jbosscache-core:config:3.2">

 <!--<clustering mode="replication">
 <jgroupsConfig configFile="udp.xml" />
 <sync />
 </clustering>-->

 <!-- Configure the TransactionManager -->
 <transaction transactionManagerLookupClass="org.jboss.cache.transaction.GenericTransactionManagerLookup"/>

 <clustering mode="replication">
 <!-- JGroups protocol stack properties. -->
 <jgroupsConfig>
 <UDP discard_incompatible_packets="true" enable_bundling="false" enable_diagnostics="false" ip_ttl="2"
 loopback="false" max_bundle_size="64000" max_bundle_timeout="30" mcast_addr="228.10.10.10"
 mcast_port="45588" mcast_recv_buf_size="25000000" mcast_send_buf_size="640000"
 oob_thread_pool.enabled="true" oob_thread_pool.keep_alive_time="10000" oob_thread_pool.max_threads="4"
 oob_thread_pool.min_threads="1" oob_thread_pool.queue_enabled="true" oob_thread_pool.queue_max_size="10"
 oob_thread_pool.rejection_policy="Run" thread_naming_pattern="pl" thread_pool.enabled="true"
 thread_pool.keep_alive_time="30000" thread_pool.max_threads="25" thread_pool.min_threads="1"
 thread_pool.queue_enabled="true" thread_pool.queue_max_size="10" thread_pool.rejection_policy="Run"
 tos="8" ucast_recv_buf_size="20000000" ucast_send_buf_size="640000" use_concurrent_stack="true"
 use_incoming_packet_handler="true"/>
 <PING num_initial_members="3" timeout="2000"/>
 <MERGE2 max_interval="30000" min_interval="10000"/>
 <FD_SOCK/>
 <FD max_tries="5" shun="true" timeout="10000"/>
 <VERIFY_SUSPECT timeout="1500"/>
 <pbcast.NAKACK discard_delivered_msgs="true" gc_lag="0" retransmit_timeout="300,600,1200,2400,4800"
 use_mcast_xmit="false"/>
 <UNICAST timeout="300,600,1200,2400,3600"/>
 <pbcast.STABLE desired_avg_gossip="50000" max_bytes="400000" stability_delay="1000"/>
 <pbcast.GMS join_timeout="5000" print_local_addr="true" shun="false" view_ack_collection_timeout="5000"
 view_bundling="true"/>
 <FRAG2 frag_size="60000"/>
 <pbcast.STREAMING_STATE_TRANSFER/>
 <pbcast.FLUSH timeout="0"/>

 </jgroupsConfig>

 <sync />
 <!-- Alternatively, to use async replication, comment out the element above and uncomment the element below. -->
 <!-- <async /> -->

 </clustering>

</jbosscache>

-->0 nodes on both JVMs

[chtimi2]

Here is my test main:

public class JustStartTheCache
{
 private final String name;
 private final Cache cache;

 public JustStartTheCache(String name)
 {
 this.name = name;
 CacheFactory factory = new DefaultCacheFactory();
 this.cache = factory.createCache ( "resources/META-INF/replSync-service.xml" , false );
 }

 public static void main(String[] args)
 {
 new JustStartTheCache( args[0] ).doIt();
 }

 private void doIt()
 {
 System.out.println ( name + " STARTING" );
 this.cache.start();
 System.out.println ( name + " STARTED: " + cache );
 }
}

My conf:

<?xml version="1.0" encoding="UTF-8"?>

<jbosscache xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="urn:jboss:jbosscache-core:config:3.2">

 <transaction transactionManagerLookupClass="org.jboss.cache.transaction.GenericTransactionManagerLookup"/>

 <!--<clustering mode="replication">
 <jgroupsConfig configFile="udp.xml" />
 <sync />
 </clustering>-->

 <clustering mode="replication">
 <jgroupsConfig>
 <UDP discard_incompatible_packets="true" enable_bundling="false" enable_diagnostics="false" ip_ttl="2"
 loopback="false" max_bundle_size="64000" max_bundle_timeout="30" mcast_addr="228.10.10.10"
 mcast_port="45588" mcast_recv_buf_size="25000000" mcast_send_buf_size="640000"
 oob_thread_pool.enabled="true" oob_thread_pool.keep_alive_time="10000" oob_thread_pool.max_threads="4"
 oob_thread_pool.min_threads="1" oob_thread_pool.queue_enabled="true" oob_thread_pool.queue_max_size="10"
 oob_thread_pool.rejection_policy="Run" thread_naming_pattern="pl" thread_pool.enabled="true"
 thread_pool.keep_alive_time="30000" thread_pool.max_threads="25" thread_pool.min_threads="1"
 thread_pool.queue_enabled="true" thread_pool.queue_max_size="10" thread_pool.rejection_policy="Run"
 tos="8" ucast_recv_buf_size="20000000" ucast_send_buf_size="640000" use_concurrent_stack="true"
 use_incoming_packet_handler="true"/>
 <PING num_initial_members="3" timeout="2000"/>
 <MERGE2 max_interval="30000" min_interval="10000"/>
 <FD_SOCK/>
 <FD max_tries="5" shun="true" timeout="10000"/>
 <VERIFY_SUSPECT timeout="1500"/>
 <pbcast.NAKACK discard_delivered_msgs="true" gc_lag="0" retransmit_timeout="300,600,1200,2400,4800"
 use_mcast_xmit="false"/>
 <UNICAST timeout="300,600,1200,2400,3600"/>
 <pbcast.STABLE desired_avg_gossip="50000" max_bytes="400000" stability_delay="1000"/>
 <pbcast.GMS join_timeout="5000" print_local_addr="true" shun="false" view_ack_collection_timeout="5000"
 view_bundling="true"/>
 <FRAG2 frag_size="60000"/>
 <pbcast.STREAMING_STATE_TRANSFER/>
 <pbcast.FLUSH timeout="0"/>

 </jgroupsConfig>
 <sync />
 </clustering>

</jbosscache>

The result is the same no matter which clustering conf i choose:

NODE1 STARTING
NODE1 STARTED: org.jboss.cache.DataContainerImpl [0 nodes, 0 locks]

NODE2 STARTING
NODE2 STARTED: org.jboss.cache.DataContainerImpl [0 nodes, 0 locks]

No cluster is formed, and the number of nodes (0) is confirmed in JConsole for the exported MBean for DataContainerImpl.

[belaban]

'Nodes' refers to the number of nodes in the tree, not in the cluster !

To get the cluster nodes, use the JMX method getMembers() or getView()

[chtimi2]

Oops, well it turns out the cluster was indeed forming.