State retrieval on startup fails when transaction is opened
kaa Jun 16, 2005 8:19 AMHello,
I found the following problem with JBoss TreeCache in clustered environment. When cache starts it tries to retrieve it state from coordinator cache (FetchStateOnStartup = true), but in the case when transaction is opened on coordinator the retrieval fails with no notifcation except log message: "state could not be retrieved (must be first member in group)".
Is it a bug? How can I check this failure in code?
Here the cache properties:
<?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=TreeCache"> <depends>jboss:service=Naming</depends> <depends>jboss:service=TransactionManager</depends> <attribute name="TransactionManagerLookupClass">org.jboss.cache.DummyTransactionManagerLookup</attribute> <attribute name="IsolationLevel">REPEATABLE_READ</attribute> <attribute name="CacheMode">REPL_SYNC</attribute> <attribute name="UseReplQueue">false</attribute> <attribute name="ReplQueueInterval">0</attribute> <attribute name="ReplQueueMaxElements">0</attribute> <attribute name="ClusterName">TreeCache-Cluster</attribute> <attribute name="ClusterConfig"> <config> <UDP mcast_addr="<address>" 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_SOCK/> <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="true" down_thread="true"/> </config> </attribute> <attribute name="FetchStateOnStartup">true</attribute> <attribute name="InitialStateRetrievalTimeout">5000</attribute> <attribute name="SyncReplTimeout">10000</attribute> <attribute name="LockAcquisitionTimeout">15000</attribute> <attribute name="EvictionPolicyClass">org.jboss.cache.eviction.LRUPolicy</attribute> <attribute name="EvictionPolicyConfig"> <config> <attribute name="wakeUpIntervalSeconds">5</attribute> <region name="/_default_"> <attribute name="maxNodes">5000</attribute> <attribute name="timeToLiveSeconds">86400</attribute> </region> <region name="/subscriber"> <attribute name="maxNodes">100000</attribute> <attribute name="timeToLiveSeconds">30</attribute> </region> </config> </attribute> </mbean> </server>