Hi,
I am trying to configure a share nothing master/slave. When I start the
master everything looks fine in the logs. When I start the slave I see the
following Exception. Things seem to work fine for a bit but then I start
getting a lot more Exceptions after a while. I'm using 5.4.2. My config
files are included at the end of the post.
Will this lead to problems with master/slave synchronization?
Note: I am also using a network of brokers, but this is independent of that.
2011-02-07 10:16:01,612 | DEBUG | Error occured while processing async
command: BrokerInfo {commandId = 4, responseRequired = false, brokerId =
ID:dv1001-60597-1297087960315-0:1, brokerURL = tcp://dv1001:61616,
slaveBroker = false, masterBroker = false, faultTolerantConfiguration =
false, networkConnection = false, duplexConnection = false, peerBrokerInfos
= [], brokerName = master-A-dv1001, connectionId = 0, brokerUploadUrl =
null, networkProperties = null}, exception: java.lang.NullPointerException |
org.apache.activemq.broker.TransportConnection.Service | VMTransport:
vm://slave-A-dv1002#1
java.lang.NullPointerException
at
org.apache.activemq.broker.TransportConnector.getConnectionControl(TransportConnector.java:387)
at
org.apache.activemq.broker.TransportConnector.updateClientClusterInfo(TransportConnector.java:415)
at
org.apache.activemq.broker.region.RegionBroker.addBrokerInClusterUpdate(RegionBroker.java:905)
at
org.apache.activemq.broker.region.RegionBroker.addBroker(RegionBroker.java:642)
at
org.apache.activemq.broker.BrokerFilter.addBroker(BrokerFilter.java:185)
at
org.apache.activemq.broker.BrokerFilter.addBroker(BrokerFilter.java:185)
at
org.apache.activemq.broker.BrokerFilter.addBroker(BrokerFilter.java:185)
at
org.apache.activemq.broker.MutableBrokerFilter.addBroker(MutableBrokerFilter.java:191)
at
org.apache.activemq.broker.TransportConnection.processBrokerInfo(TransportConnection.java:1232)
at org.apache.activemq.command.BrokerInfo.visit(BrokerInfo.java:125)
at
org.apache.activemq.broker.TransportConnection.service(TransportConnection.java:311)
at
org.apache.activemq.broker.TransportConnection$1.onCommand(TransportConnection.java:185)
at
org.apache.activemq.transport.ResponseCorrelator.onCommand(ResponseCorrelator.java:116)
at
org.apache.activemq.transport.TransportFilter.onCommand(TransportFilter.java:69)
at
org.apache.activemq.transport.vm.VMTransport.iterate(VMTransport.java:219)
at
org.apache.activemq.thread.DedicatedTaskRunner.runTask(DedicatedTaskRunner.java:98)
at
org.apache.activemq.thread.DedicatedTaskRunner$1.run(DedicatedTaskRunner.java:36)
2011-02-07 10:16:01,613 | WARN | Async error occurred:
java.lang.NullPointerException |
org.apache.activemq.broker.TransportConnection.Service | VMTransport:
vm://slave-A-dv1002#1
java.lang.NullPointerException
at
org.apache.activemq.broker.TransportConnector.getConnectionControl(TransportConnector.java:387)
at
org.apache.activemq.broker.TransportConnector.updateClientClusterInfo(TransportConnector.java:415)
at
org.apache.activemq.broker.region.RegionBroker.addBrokerInClusterUpdate(RegionBroker.java:905)
at
org.apache.activemq.broker.region.RegionBroker.addBroker(RegionBroker.java:642)
at
org.apache.activemq.broker.BrokerFilter.addBroker(BrokerFilter.java:185)
at
org.apache.activemq.broker.BrokerFilter.addBroker(BrokerFilter.java:185)
at
org.apache.activemq.broker.BrokerFilter.addBroker(BrokerFilter.java:185)
at
org.apache.activemq.broker.MutableBrokerFilter.addBroker(MutableBrokerFilter.java:191)
at
org.apache.activemq.broker.TransportConnection.processBrokerInfo(TransportConnection.java:1232)
at org.apache.activemq.command.BrokerInfo.visit(BrokerInfo.java:125)
at
org.apache.activemq.broker.TransportConnection.service(TransportConnection.java:311)
at
org.apache.activemq.broker.TransportConnection$1.onCommand(TransportConnection.java:185)
at
org.apache.activemq.transport.ResponseCorrelator.onCommand(ResponseCorrelator.java:116)
at
org.apache.activemq.transport.TransportFilter.onCommand(TransportFilter.java:69)
at
org.apache.activemq.transport.vm.VMTransport.iterate(VMTransport.java:219)
at
org.apache.activemq.thread.DedicatedTaskRunner.runTask(DedicatedTaskRunner.java:98)
at
org.apache.activemq.thread.DedicatedTaskRunner$1.run(DedicatedTaskRunner.java:36)
slave config:
<beans
xmlns="http://www.springframework.org/schema/beans";
xmlns:amq="http://activemq.apache.org/schema/core";
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
http://activemq.apache.org/schema/core
http://activemq.apache.org/schema/core/activemq-core.xsd";>
<!-- Allows us to use system properties as variables in this
configuration file -->
<bean
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="locations">
<value>file:${activemq.base}/conf/credentials.properties</value>
</property>
</bean>
<!--
The <broker> element is used to configure the ActiveMQ broker.
-->
<broker xmlns="http://activemq.apache.org/schema/core";
brokerName="slave-A-dv1002" dataDirectory="${activemq.base}/data"
destroyApplicationContextOnStop="true"
masterConnectorURI="tcp://dv1001:61616">
<!--
For better performances use VM cursor and small memory
limit.
For more information, see:
http://activemq.apache.org/message-cursors.html
Also, if your producer is "hanging", it's probably due to
producer flow control.
For more information, see:
http://activemq.apache.org/producer-flow-control.html
-->
<destinationPolicy>
<policyMap>
<policyEntries>
<policyEntry topic=">" producerFlowControl="false"
memoryLimit="1mb">
<pendingSubscriberPolicy>
<vmCursor />
</pendingSubscriberPolicy>
</policyEntry>
<policyEntry queue=">" producerFlowControl="false"
memoryLimit="1mb">
<!-- Use VM cursor for better latency
For more information, see:
http://activemq.apache.org/message-cursors.html
<pendingQueuePolicy>
<vmQueueCursor/>
</pendingQueuePolicy>
-->
</policyEntry>
</policyEntries>
</policyMap>
</destinationPolicy>
<!--
The managementContext is used to configure how ActiveMQ is
exposed in
JMX. By default, ActiveMQ uses the MBean server that is started
by
the JVM. For more information, see:
http://activemq.apache.org/jmx.html
-->
<managementContext>
<managementContext createConnector="false"/>
</managementContext>
<networkConnectors>
<networkConnector
uri="static:(failover:(tcp://dv1002:61616,tcp://dv1001:61626)?randomize=false)"
dynamicOnly="true"
decreaseNetworkConsumerPriority="false"
networkTTL="100"
/>
</networkConnectors>
<!--
Configure message persistence for the broker. The default
persistence
mechanism is the KahaDB store (identified by the kahaDB tag).
For more information, see:
http://activemq.apache.org/persistence.html
-->
<persistenceAdapter>
<kahaDB directory="${activemq.base}/data/kahadb"/>
</persistenceAdapter>
<!--
The systemUsage controls the maximum amount of space the broker
will
use before slowing down producers. For more information, see:
http://activemq.apache.org/producer-flow-control.html
<systemUsage>
<systemUsage>
<memoryUsage>
<memoryUsage limit="20 mb"/>
</memoryUsage>
<storeUsage>
<storeUsage limit="1 gb"/>
</storeUsage>
<tempUsage>
<tempUsage limit="100 mb"/>
</tempUsage>
</systemUsage>
</systemUsage>
-->
<!--
The transport connectors expose ActiveMQ over a given protocol
to
clients and other brokers. For more information, see:
http://activemq.apache.org/configuring-transports.html
-->
<transportConnectors>
<transportConnector name="openwire"
uri="tcp://0.0.0.0:61626"
updateClusterClients="true"
rebalanceClusterClients="true"
updateClusterClientsOnRemove="true"
/>
</transportConnectors>
</broker>
<!--
Enable web consoles, REST and Ajax APIs and demos
It also includes Camel (with its web console), see
${ACTIVEMQ_HOME}/conf/camel.xml for more info
Take a look at ${ACTIVEMQ_HOME}/conf/jetty.xml for more details
-->
<import resource="jetty.xml"/>
</beans>
master config:
<beans
xmlns="http://www.springframework.org/schema/beans";
xmlns:amq="http://activemq.apache.org/schema/core";
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
http://activemq.apache.org/schema/core
http://activemq.apache.org/schema/core/activemq-core.xsd";>
<!-- Allows us to use system properties as variables in this
configuration file -->
<bean
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="locations">
<value>file:${activemq.base}/conf/credentials.properties</value>
</property>
</bean>
<!--
The <broker> element is used to configure the ActiveMQ broker.
-->
<broker xmlns="http://activemq.apache.org/schema/core";
brokerName="master-A-dv1001" dataDirectory="${activemq.base}/data"
destroyApplicationContextOnStop="true" waitForSlave="true">
<!--
For better performances use VM cursor and small memory
limit.
For more information, see:
http://activemq.apache.org/message-cursors.html
Also, if your producer is "hanging", it's probably due to
producer flow control.
For more information, see:
http://activemq.apache.org/producer-flow-control.html
-->
<destinationPolicy>
<policyMap>
<policyEntries>
<policyEntry topic=">" producerFlowControl="false"
memoryLimit="1mb">
<pendingSubscriberPolicy>
<vmCursor />
</pendingSubscriberPolicy>
</policyEntry>
<policyEntry queue=">" producerFlowControl="false"
memoryLimit="1mb">
<!-- Use VM cursor for better latency
For more information, see:
http://activemq.apache.org/message-cursors.html
<pendingQueuePolicy>
<vmQueueCursor/>
</pendingQueuePolicy>
-->
</policyEntry>
</policyEntries>
</policyMap>
</destinationPolicy>
<!--
The managementContext is used to configure how ActiveMQ is
exposed in
JMX. By default, ActiveMQ uses the MBean server that is started
by
the JVM. For more information, see:
http://activemq.apache.org/jmx.html
-->
<managementContext>
<managementContext createConnector="false"/>
</managementContext>
<networkConnectors>
<networkConnector
uri="static:(failover:(tcp://dv1002:61616,tcp://dv1001:61626)?randomize=false)"
dynamicOnly="true"
decreaseNetworkConsumerPriority="false"
networkTTL="100"
/>
</networkConnectors>
<!--
Configure message persistence for the broker. The default
persistence
mechanism is the KahaDB store (identified by the kahaDB tag).
For more information, see:
http://activemq.apache.org/persistence.html
-->
<persistenceAdapter>
<kahaDB directory="${activemq.base}/data/kahadb"/>
</persistenceAdapter>
<!--
The systemUsage controls the maximum amount of space the broker
will
use before slowing down producers. For more information, see:
http://activemq.apache.org/producer-flow-control.html
<systemUsage>
<systemUsage>
<memoryUsage>
<memoryUsage limit="20 mb"/>
</memoryUsage>
<storeUsage>
<storeUsage limit="1 gb"/>
</storeUsage>
<tempUsage>
<tempUsage limit="100 mb"/>
</tempUsage>
</systemUsage>
</systemUsage>
-->
<!--
The transport connectors expose ActiveMQ over a given protocol
to
clients and other brokers. For more information, see:
http://activemq.apache.org/configuring-transports.html
-->
<transportConnectors>
<transportConnector name="openwire"
uri="tcp://0.0.0.0:61616"
updateClusterClients="true"
rebalanceClusterClients="true"
updateClusterClientsOnRemove="true"
/>
</transportConnectors>
</broker>
<!--
Enable web consoles, REST and Ajax APIs and demos
It also includes Camel (with its web console), see
${ACTIVEMQ_HOME}/conf/camel.xml for more info
Take a look at ${ACTIVEMQ_HOME}/conf/jetty.xml for more details
-->
<import resource="jetty.xml"/>
</beans>
--
View this message in context:
http://activemq.2283324.n4.nabble.com/NullPointerException-starting-slave-tp3264279p3264279.html
Sent from the ActiveMQ - User mailing list archive at Nabble.com.
