Failover issues

[Geurt Schimmel]

Hi,

We have 2 network-of-brokers with a failover-configuration, but we're having 
performance-problems and loosing messages. Clients connect to HostA1 and 
HostA2. All brokers run 5.8 stable, only persistent messages using KahaDB:

   <persistenceAdapter>
      <kahaDB directory="${activemq.base}/data/kahadb" 
enableJournalDiskSyncs="false" indexWriteBatchSize="10000" 
indexCacheSize="1000"/>
    </persistenceAdapter>

HostA1:
uri="static:(ssl://HostA2:61616)" duplex="true"
uri="static:(failover:(ssl://HostB1:61616,HostB2:61616)?randomize=false&amp;priorityBackup=true)"
  conduitSubscriptions="false" decreaseNetworkConsumerPriority="true" 
duplex="true" networkTTL="10" prefetchSize="4000" staticBridge="true" 
suppressDuplicateQueueSubscriptions="true"

HostA2:
uri="static:(failover:(ssl://HostB2:61616,ssl://HostB1:61616)?randomize=false&amp;priorityBackup=true)"
 conduitSubscriptions="false" decreaseNetworkConsumerPriority="true" 
duplex="true" networkTTL="10" prefetchSize="4000" staticBridge="true" 
suppressDuplicateQueueSubscriptions="true"

HostB1:
uri="static:(ssl://HostB2:61616)" duplex="true"

HostB1 and HostB2:
uri="ssl://0.0.0.0:61616?jms.prefetchPolicy.queuePrefetch=4000&amp;jms.optimizeAcknowledge=true"
 updateClusterClients="true" rebalanceClusterClients="true" 
updateClusterClientsOnRemove="true"/>

Note the host-order in the URI is mirrored.

When the brokers on HostA2 and HostB2 are down, performance is amazing (> 1000 
msg/sec), and all messages are received by HostB1.

Please advise - I'm lost.

Geurt