Details
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Bug
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Status: Closed
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Major
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Resolution: Incomplete
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5.5.0
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None
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ActiveMQ v5.5.0 on Sun's JDK 1.6.0_23
OS: Windows XP 2002 with sp3
Database: Oracle10g using JDBC driver ojdbc6_g.jar v11.2.0.2
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Regression
Description
ActiveMQ broker server fails to start as a Windows Service.
A NullPointerException happens during startup and then ActiveMQ shuts down automatically.
Only workaround discovered so far is to drop all the database tables before starting up the server.
JDBCPersistenceAdapter.java
public long getLastMessageBrokerSequenceId() throws IOException { TransactionContext c = getTransactionContext(); try { long seq = getAdapter().doGetLastMessageStoreSequenceId(c); sequenceGenerator.setLastSequenceId(seq); long brokerSeq = 0; if (seq != 0) { byte[] msg = getAdapter().doGetMessageById(c, seq); if (msg != null) { Message last = (Message)wireFormat.unmarshal(new ByteSequence(msg)); brokerSeq = last.getMessageId().getBrokerSequenceId(); } else { LOG.warn("Broker sequence id wasn't recovered properly, possible duplicates!"); } } return brokerSeq; } catch (SQLException e) { JDBCPersistenceAdapter.log("JDBC Failure: ", e); throw IOExceptionSupport.create("Failed to get last broker message id: " + e, e); } finally { c.close(); } }
When the byte array "msg" is not null but is populated with zeros, the wireFormat unmarshal call will return null.
This then causes a NullPointerException on line 237 of JDBCPersiistenceAdapter.
2011-07-07 11:20:02,618 | DEBUG | Locking Query is SELECT * FROM V550_ACTIVEMQ_LOCK FOR UPDATE | org.apache.activemq.store.jdbc.DefaultDatabaseLocker | WrapperSimpleAppMain 2011-07-07 11:20:02,649 | INFO | Becoming the master on dataSource: oracle.jdbc.pool.OracleDataSource@1557ee8 | org.apache.activemq.store.jdbc.DefaultDatabaseLocker | WrapperSimpleAppMain 2011-07-07 11:20:02,649 | INFO | ActiveMQ 5.5.0-fuse-00-27 JMS Message Broker (FuseActiveMQ-Broker-550) is starting | org.apache.activemq.broker.BrokerService | WrapperSimpleAppMain 2011-07-07 11:20:02,649 | INFO | For help or more information please see: http://activemq.apache.org/ | org.apache.activemq.broker.BrokerService | WrapperSimpleAppMain 2011-07-07 11:20:04,774 | ERROR | Failed to start ActiveMQ JMS Message Broker. Reason: java.lang.NullPointerException | org.apache.activemq.broker.BrokerService | WrapperSimpleAppMain java.lang.NullPointerException at org.apache.activemq.store.jdbc.JDBCPersistenceAdapter.getLastMessageBrokerSequenceId(JDBCPersistenceAdapter.java:237) at org.apache.activemq.broker.region.DestinationFactoryImpl.getLastMessageBrokerSequenceId(DestinationFactoryImpl.java:145) at org.apache.activemq.broker.region.RegionBroker.<init>(RegionBroker.java:122) at org.apache.activemq.broker.jmx.ManagedRegionBroker.<init>(ManagedRegionBroker.java:104) at org.apache.activemq.broker.BrokerService.createRegionBroker(BrokerService.java:1838) at org.apache.activemq.broker.BrokerService.createRegionBroker(BrokerService.java:1832) at org.apache.activemq.broker.BrokerService.createBroker(BrokerService.java:1789) at org.apache.activemq.broker.BrokerService.getBroker(BrokerService.java:763) at org.apache.activemq.store.jdbc.JDBCPersistenceAdapter.start(JDBCPersistenceAdapter.java:296) at org.apache.activemq.broker.BrokerService.start(BrokerService.java:490) at org.apache.activemq.xbean.XBeanBrokerService.afterPropertiesSet(XBeanBrokerService.java:60) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeCustomInitMethod(AbstractAutowireCapableBeanFactory.java:1536) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1477) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1409) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:291) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:288) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:190) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:574) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:895) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:425) at org.apache.xbean.spring.context.ResourceXmlApplicationContext.<init>(ResourceXmlApplicationContext.java:64) at org.apache.xbean.spring.context.ResourceXmlApplicationContext.<init>(ResourceXmlApplicationContext.java:52) at org.apache.activemq.xbean.XBeanBrokerFactory$1.<init>(XBeanBrokerFactory.java:106) at org.apache.activemq.xbean.XBeanBrokerFactory.createApplicationContext(XBeanBrokerFactory.java:106) at org.apache.activemq.xbean.XBeanBrokerFactory.createBroker(XBeanBrokerFactory.java:71) at org.apache.activemq.broker.BrokerFactory.createBroker(BrokerFactory.java:71) at org.apache.activemq.broker.BrokerFactory.createBroker(BrokerFactory.java:54) at org.apache.activemq.console.command.StartCommand.startBroker(StartCommand.java:115) at org.apache.activemq.console.command.StartCommand.runTask(StartCommand.java:74) at org.apache.activemq.console.command.AbstractCommand.execute(AbstractCommand.java:57) at org.apache.activemq.console.command.ShellCommand.runTask(ShellCommand.java:143) at org.apache.activemq.console.command.AbstractCommand.execute(AbstractCommand.java:57) at org.apache.activemq.console.command.ShellCommand.main(ShellCommand.java:85) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.activemq.console.Main.runTaskClass(Main.java:251) at org.apache.activemq.console.Main.main(Main.java:107) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.tanukisoftware.wrapper.WrapperSimpleApp.run(WrapperSimpleApp.java:240) at java.lang.Thread.run(Thread.java:662) 2011-07-07 11:20:04,837 | INFO | ActiveMQ Message Broker (FuseActiveMQ-Broker-550, null) is shutting down | org.apache.activemq.broker.BrokerService | WrapperSimpleAppMain