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1. Re: "Unable to acquire lock on Fqn" exception with clustered Pojocache
brettcave Mar 10, 2010 9:11 AM (in response to brettcave)<server> <mbean code="org.jboss.cache.pojo.jmx.PojoCacheJmxWrapper" name="jboss.cache:service=PojoCache"> <depends>jboss:service=TransactionManager</depends> <attribute name="TransactionManagerLookupClass">org.jboss.cache.transaction.JBossTransactionManagerLookup</attribute> <attribute name="IsolationLevel">REPEATABLE_READ</attribute> <attribute name="CacheMode">REPL_SYNC</attribute> <attribute name="ClusterName">PojoCache-${jboss.partition.name:DefaultPartition}</attribute> <attribute name="ClusterConfig"> <config> <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"/> <MERGE2 min_interval="10000" max_interval="20000"/> <FD shun="true"/> <FD_SOCK/> <VERIFY_SUSPECT timeout="1500"/> <pbcast.NAKACK gc_lag="50" retransmit_timeout="600,1200,2400,4800" /> <UNICAST timeout="600,1200,2400,4800" /> <pbcast.STABLE desired_avg_gossip="400000"/> <FC max_credits="2000000" min_threshold="0.10"/> <FRAG2 frag_size="8192"/> <pbcast.GMS join_timeout="5000" shun="true" print_local_addr="true"/> <pbcast.STATE_TRANSFER/> </config> </attribute> <attribute name="FetchInMemoryState">true</attribute> <attribute name="InitialStateRetrievalTimeout">15000</attribute> <attribute name="SyncReplTimeout">15000</attribute> <attribute name="LockAcquisitionTimeout">10000</attribute> </mbean> </server>
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2. Re: "Unable to acquire lock on Fqn" exception with clustered Pojocache
brettcave Mar 12, 2010 8:04 AM (in response to brettcave)Seems to be caused by a bug:
https://jira.jboss.org/jira/browse/JBCACHE-1565
1. configure pojocache using JBossTransactionManager and run in a clustered environment
2. attach an object to the cache.
Exception about not being able to acquire lock on Fqn is thrown.