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From "Hiram Chirino (JIRA)" <j...@apache.org>
Subject [jira] Updated: (AMQ-528) 4.0 M4 NullPointerException while shutting down
Date Wed, 26 Jul 2006 05:07:23 GMT
     [ https://issues.apache.org/activemq/browse/AMQ-528?page=all ]

Hiram Chirino updated AMQ-528:
------------------------------

    Fix Version/s: 4.0.3
                       (was: 4.0.2)

> 4.0 M4 NullPointerException while shutting down
> -----------------------------------------------
>
>                 Key: AMQ-528
>                 URL: https://issues.apache.org/activemq/browse/AMQ-528
>             Project: ActiveMQ
>          Issue Type: Bug
>    Affects Versions: 4.0
>         Environment: RedHat Linux Enterprise Server 3, Tomcat 5.5.15, MySQL 5.0.18 for
Linux
>            Reporter: Leon Hu
>            Priority: Critical
>             Fix For: 4.0.3, 4.1
>
>
> Setup: 
> 3 networked brokers, B1, B2, and B3, on 3 servers, connected using multicast discovery.
activemq.xml: 
>  <broker useJmx="false" brokerName="B1"> 
>   
>  <persistenceAdapter> 
>         <journaledJDBC journalLogFiles="5" dataDirectory="foo" dataSource="#mysql-ds"/>

>  </persistenceAdapter> 
>   
>  <transportConnectors> 
>  <transportConnector uri="tcp://localhost:61616" discoveryUri="multicast://default"/>

>  </transportConnectors> 
>   
>  <networkConnectors> 
>  <networkConnector uri="multicast://default"/> 
>  </networkConnectors> 
>   
>  </broker> 
>   
>  <bean id="mysql-ds" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">

>            <property name="driverClassName" value="com.mysql.jdbc.Driver"/> 
>            <property name="url" value="jdbc:mysql://localhost/activemq?relaxAutoCommit=true"/>

>                  <property name="username" value="activemqUser"/> 
>                  <property name="password" value="activemqPwd"/> 
>                  <property name="poolPreparedStatements" value="true"/> 
>  </bean> 
> Similar for B2 and B3. 
> Two queues: Q1 and Q2. 
> Two producers, one for each queue, both producers connected to B1. 
> One Q1 cosumer connected to B1, another Q1 consumer on B2. 
> One Q2 consumer connected to B2, another Q2 consumer connected to B3. 
> Steps: 
> Start the brokers and start sending messages to the queue. 
> After a while, stop the brokers (Sequence does not matter) 
> See the errors in catalina.out of the Tomcat that has a broker with both producers and
consumers connected 
> The problems:
> 1. 
> Exception in thread "ActiveMQ Scheduler" java.lang.NullPointerException
>          at edu.emory.mathcs.backport.java.util.concurrent.helpers.Utils$SunPerfProvider.nanoTime(Utils.java:219)
>          at edu.emory.mathcs.backport.java.util.concurrent.helpers.Utils.nanoTime(Utils.java:99)
>          at edu.emory.mathcs.backport.java.util.concurrent.ScheduledThreadPoolExecutor.now(ScheduledThreadPoolExecutor.java:88)
>          at edu.emory.mathcs.backport.java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.getDelay(ScheduledThreadPoolExecutor.java:137)
>  Exception in thread "ActiveMQ Scheduler" Exception in thread "ActiveMQ Scheduler" Exception
in thread "ActiveMQ Scheduler"      at edu.emory.mathcs.backport.java.util.concurrent.DelayQueue.take(DelayQueue.java:154)
>          at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:470)
>          at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:667)
>          at java.lang.Thread.run(Thread.java:595)
>  java.lang.NullPointerException
>          at edu.emory.mathcs.backport.java.util.concurrent.helpers.Utils$SunPerfProvider.nanoTime(Utils.java:219)
>  Exception in thread "ActiveMQ Scheduler" Exception in thread "ActiveMQ Scheduler" Exception
in thread "ActiveMQ Scheduler"      at edu.emory.mathcs.backport.java.util.concurrent.helpers.Utils.nanoTime(Utils.java:99)
>          at edu.emory.mathcs.backport.java.util.concurrent.ScheduledThreadPoolExecutor.now(ScheduledThreadPoolExecutor.java:88)
>          at edu.emory.mathcs.backport.java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.getDelay(ScheduledThreadPoolExecutor.java:137)
>          at edu.emory.mathcs.backport.java.util.concurrent.DelayQueue.take(DelayQueue.java:154)
>          at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:470)
>  Exception in thread "ActiveMQ Scheduler" Exception in thread "ActiveMQ Scheduler"  
    at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:667)
>          at java.lang.Thread.run(Thread.java:595)
> 2. The same exception is logged to the log file (in my case catalina.out) for hundreds
of times, resulting a log file exceeding 150 MB in 2 minutes. 

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