Problems with pure master/slave configuration
---------------------------------------------
Key: AMQ-1585
URL: https://issues.apache.org/activemq/browse/AMQ-1585
Project: ActiveMQ
Issue Type: Bug
Components: Broker
Affects Versions: 5.0.0, 4.1.1, 5.1.0
Environment: Ubuntu 6.04, JDK 1.5.0_011, Spring 2.0.x
Reporter: Thomas Buckel
As posted in the AMQ user forum:
http://www.nabble.com/Problems-with-Pure-Master-Slave-in-AMQ-5.0.0-to15471491s2354.html#a15474769
-------------------
Hi all,
I am having trouble setting up a *stable* ActiveMQ Pure Master/Slave topology.
Initially I have tried v4.1.1 which failed with an exception. I found an AMQ
JIRA ticket which said that Pure/Master slave didn't work in v4.1.1.
Ok, so I switched to AMQ 5.0.0, created 2 configs (master/slave, see end of
message) and ran two AMQ instances (on the same box) and most of the times my
test (see below) worked, but more often I get various error messages like:
- On the slave:
ERROR Service - Async error occurred:
javax.jms.JMSException: Slave broker out of sync with master: Dispatched
message (ID:tbuckel-desktop-41814-1202886136210-0:0:565:1:1) was not in the
pending list
javax.jms.JMSException: Slave broker out of sync with master: Dispatched
message (ID:tbuckel-desktop-41814-1202886136210-0:0:565:1:1) was not in the
pending list
at
org.apache.activemq.broker.region.PrefetchSubscription.processMessageDispatchNotification(PrefetchSubscription.java:160)
at
org.apache.activemq.broker.region.AbstractRegion.processDispatchNotification(AbstractRegion.java:381)
at
org.apache.activemq.broker.region.RegionBroker.processDispatchNotification(RegionBroker.java:550)
at
org.apache.activemq.broker.BrokerFilter.processDispatchNotification(BrokerFilter.java:201)
at
org.apache.activemq.broker.BrokerFilter.processDispatchNotification(BrokerFilter.java:201)
at
org.apache.activemq.broker.BrokerFilter.processDispatchNotification(BrokerFilter.java:201)
at
org.apache.activemq.broker.MutableBrokerFilter.processDispatchNotification(MutableBrokerFilter.java:211)
at
org.apache.activemq.broker.TransportConnection.processMessageDispatchNotification(TransportConnection.java:450)
at
org.apache.activemq.command.MessageDispatchNotification.visit(MessageDispatchNotification.java:77)
at
org.apache.activemq.broker.TransportConnection.service(TransportConnection.java:281)
at
org.apache.activemq.broker.TransportConnection$1.onCommand(TransportConnection.java:178)
at
org.apache.activemq.transport.ResponseCorrelator.onCommand(ResponseCorrelator.java:100)
at
org.apache.activemq.transport.TransportFilter.onCommand(TransportFilter.java:67)
at
org.apache.activemq.transport.vm.VMTransport.iterate(VMTransport.java:202)
at
org.apache.activemq.thread.DedicatedTaskRunner.runTask(DedicatedTaskRunner.java:98)
at
org.apache.activemq.thread.DedicatedTaskRunner$1.run(DedicatedTaskRunner.java:36)
- After having killed the master, stopped the slave, copied the slave's data
into the master's data directory various error message came up (as described in
the Master/Slave recovery section), e.g. (internal) ActiveMQ topics were not
available, the admin webApp showed exceptions and errors on the client.
The test I've created uses Spring 2.0.x and pumps 1000 MapMessages in a queue
through Spring's JmsTempate, each message is created within its own
transaction, using JmsTransactionManager and TransactionTemplate.
The created messages are consumed by an initially instantiated transactional
DefaultMessageListenerContainer. The AMQ JARs in the test's classpath are
activemq-core-5.0.0.jar, geronimo-jms_1.1_spec-1.0.jar,
geronimo-jta_1.0.1B_spec-1.0.jar as I've noticed a really bad performance when
only using the activemq-all-5.0.0.jar (maybe this is the problem?).
The test code work's without problems with OpenMQ, but I'd prefer using the
nice Pure Master/Active ActiveMQ if I can get it running in a *stable* config ;)
I would highly appreciate any help or suggestions. Maybe my config is wrong or
I miss something essential. I've also tried a recent AMQ 5.1 SNAPSHOT which
wasn't better...
See below for the small program i used to test (no unit test, behaviour
appeared to be non deterministic to me and it's not so nice as i've changed it
quite often)
Thanks in advance,
Thomas
<!-- MASTER config -->
<beans
xmlns="http://www.springframework.org/schema/beans";
xmlns:amq="http://activemq.org/config/1.0";
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.org/config/1.0
http://activemq.apache.org/schema/activemq-core.xsd
http://activemq.apache.org/camel/schema/spring
http://activemq.apache.org/camel/schema/spring/camel-spring.xsd";>
<bean
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"/>
<broker xmlns="http://activemq.org/config/1.0"; brokerName="master"
dataDirectory="${activemq.base}/data">
<destinationPolicy>
<policyMap>
<policyEntries>
<policyEntry topic="FOO.>" producerFlowControl="false"
memoryLimit="1mb">
<dispatchPolicy>
<strictOrderDispatchPolicy/>
</dispatchPolicy>
<subscriptionRecoveryPolicy>
<lastImageSubscriptionRecoveryPolicy/>
</subscriptionRecoveryPolicy>
</policyEntry>
</policyEntries>
</policyMap>
</destinationPolicy>
<transportConnectors>
<transportConnector name="openwire" uri="tcp://tbuckel-desktop:7778" />
</transportConnectors>
<networkConnectors/>
<managementContext>
<managementContext connectorPort="1100"
jmxDomainName="org.apache.activemq"/>
</managementContext>
</broker>
<commandAgent xmlns="http://activemq.org/config/1.0"/>
<jetty xmlns="http://mortbay.com/schemas/jetty/1.0";>
<connectors>
<nioConnector port="8161" />
</connectors>
<handlers>
<webAppContext contextPath="/admin"
resourceBase="${activemq.base}/webapps/admin" logUrlOnStart="true" />
</handlers>
</jetty>
</beans>
<!-- SLAVE config -->
<beans
xmlns="http://www.springframework.org/schema/beans";
xmlns:amq="http://activemq.org/config/1.0";
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
http://activemq.org/config/1.0
http://activemq.apache.org/schema/activemq-core.xsd
http://activemq.apache.org/camel/schema/spring
http://activemq.apache.org/camel/schema/spring/camel-spring.xsd";>
<bean
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"/>
<broker xmlns="http://activemq.org/config/1.0"; brokerName="slave"
dataDirectory="${activemq.base}/data-slave"
masterConnectorURI="tcp://tbuckel-desktop:7778">
<destinationPolicy>
<policyMap>
<policyEntries>
<policyEntry topic="FOO.>" producerFlowControl="false"
memoryLimit="1mb">
<dispatchPolicy>
<strictOrderDispatchPolicy/>
</dispatchPolicy>
<subscriptionRecoveryPolicy>
<lastImageSubscriptionRecoveryPolicy/>
</subscriptionRecoveryPolicy>
</policyEntry>
</policyEntries>
</policyMap>
</destinationPolicy>
<transportConnectors>
<transportConnector name="openwire" uri="tcp://localhost:7779"/>
</transportConnectors>
<networkConnectors/>
<managementContext>
<managementContext connectorPort="1101"
jmxDomainName="org.apache.activemq"/>
</managementContext>
</broker>
<commandAgent xmlns="http://activemq.org/config/1.0"/>
<jetty xmlns="http://mortbay.com/schemas/jetty/1.0";>
<connectors>
<nioConnector port="8162" />
</connectors>
<handlers>
<webAppContext contextPath="/admin"
resourceBase="${activemq.base}/webapps/admin" logUrlOnStart="true" />
</handlers>
</jetty>
</beans>
------------
Test code:
import org.apache.activemq.ActiveMQConnectionFactory;
import org.springframework.jms.connection.JmsTransactionManager;
import
org.springframework.jms.connection.TransactionAwareConnectionFactoryProxy;
import org.springframework.jms.core.JmsTemplate;
import org.springframework.jms.core.MessageCreator;
import org.springframework.jms.listener.DefaultMessageListenerContainer;
import org.springframework.transaction.TransactionStatus;
import org.springframework.transaction.support.TransactionCallbackWithoutResult;
import org.springframework.transaction.support.TransactionTemplate;
import javax.jms.*;
import java.math.BigInteger;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.TimeUnit;
public class AnotherFailoverTest {
public static final int MESSAGES = 1000;
private final static List<BigInteger> notConsumedMessages = new
ArrayList<BigInteger>(MESSAGES);
private static ConnectionFactory createCF() throws Exception {
ActiveMQConnectionFactory cf = new ActiveMQConnectionFactory();
cf.setBrokerURL("failover://(tcp://localhost:7778,tcp://localhost:7779)?randomize=false");
return new TransactionAwareConnectionFactoryProxy(cf);
}
private static void send() throws Exception {
JmsTransactionManager transactionManager = new JmsTransactionManager();
transactionManager.setConnectionFactory(createCF());
transactionManager.afterPropertiesSet();
int i=0;
do {
i++;
final int number = i;
try {
final BigInteger v = new BigInteger(Integer.toString(number));
TransactionTemplate tt = new
TransactionTemplate(transactionManager);
tt.execute(new TransactionCallbackWithoutResult() {
protected void
doInTransactionWithoutResult(TransactionStatus status) {
final JmsTemplate template = new JmsTemplate(pcf);
template.setSessionTransacted(true);
template.afterPropertiesSet();
template.send("testqueue", new MessageCreator() {
public Message createMessage(Session session)
throws JMSException {
ObjectMessage dummyMessage =
session.createObjectMessage();
dummyMessage.setObject(v);
synchronized (notConsumedMessages) {
notConsumedMessages.add(v);
}
// System.out.println("Created message " +
number + "(" + notConsumedMessages.size() + ")");
return dummyMessage;
}
});
}
});
} catch (Exception e) {
e.printStackTrace();
System.out.println("Error creating message " + number);
}
} while (i < MESSAGES);
}
private static void setupReceiver() throws Exception {
JmsTransactionManager transactionManager = new JmsTransactionManager();
transactionManager.setConnectionFactory(createCF());
transactionManager.afterPropertiesSet();
final DefaultMessageListenerContainer container = new
DefaultMessageListenerContainer();
container.setConnectionFactory(pcf);
container.setTransactionManager(transactionManager);
container.setMessageListener(new MessageListener() {
public void onMessage(Message message) {
try {
ObjectMessage msg = (ObjectMessage) message;
BigInteger number = (BigInteger) msg.getObject();
synchronized (notConsumedMessages) {
if (!notConsumedMessages.remove(number)) {
System.err.println("Message " + number + " not found
in list!");
} else {
// System.out.println("Consumed message " + number);
}
}
} catch (JMSException e) {
// e.printStackTrace();
System.out.println("Error consuming message!");
}
}
});
container.setSessionTransacted(true);
container.setDestinationName("testqueue");
container.setExceptionListener(new ExceptionListener() {
public void onException(JMSException jmsException) {
System.err.println(jmsException);
}
});
container.afterPropertiesSet();
container.initialize();
TimeUnit.SECONDS.sleep(1);
}
public static void main(String[] args) throws Exception {
long start = System.currentTimeMillis();
setupReceiver();
send();
int remainingSize = 0;
do {
Thread.sleep(500);
synchronized (notConsumedMessages) {
remainingSize = notConsumedMessages.size();
}
System.out.println("Unconsumed " + remainingSize + ": " + sb);
} while (remainingSize > 0);
System.out.println("All messages consumed.");
long end = System.currentTimeMillis();
System.out.println((end-start));
System.exit(0);
}
}
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
