在Activemq服务器上启用STOMP协议(在它只启用默认协议之前)后,它开始失败并显示oom。我只有一个客户端使用STOMP。它可以在没有失败的情况下工作一周,或者在重启后一天失败。这是配置文件:
<beans
xmlns="http://www.springframework.org/schema/beans"
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.xsd
http://activemq.apache.org/schema/core http://activemq.apache.org/schema/core/activemq-core.xsd">
<bean id="logQuery" class="io.fabric8.insight.log.log4j.Log4jLogQuery"
lazy-init="false" scope="singleton"
init-method="start" destroy-method="stop">
</bean>
<!--
The <broker> element is used to configure the ActiveMQ broker.
-->
<broker useJmx="true" xmlns="http://activemq.apache.org/schema/core" brokerName="cms-mq" dataDirectory="${activemq.data}">
<destinationInterceptors>
<virtualDestinationInterceptor>
<virtualDestinations>
<virtualTopic name="VirtualTopic.>" selectorAware="true"/>
</virtualDestinations>
</virtualDestinationInterceptor>
</destinationInterceptors>
<destinationPolicy>
<policyMap>
<policyEntries>
<policyEntry topic=">" producerFlowControl="false">
</policyEntry>
<policyEntry queue=">" producerFlowControl="false">
</policyEntry>
</policyEntries>
</policyMap>
</destinationPolicy>
<managementContext>
<managementContext createConnector="false"/>
</managementContext>
<persistenceAdapter>
<kahaDB directory="${activemq.data}/kahadb"/>
</persistenceAdapter>
<systemUsage>
<systemUsage>
<memoryUsage>
<memoryUsage percentOfJvmHeap="70" />
</memoryUsage>
<storeUsage>
<storeUsage limit="4 gb"/>
</storeUsage>
<tempUsage>
<tempUsage limit="4 gb"/>
</tempUsage>
</systemUsage>
</systemUsage>
<transportConnectors>
<transportConnector name="auto" uri="auto+nio://0.0.0.0:61616?maximumConnections=1000&auto.protocols=default,stomp"/>
</transportConnectors>
<shutdownHooks>
<bean xmlns="http://www.springframework.org/schema/beans" class="org.apache.activemq.hooks.SpringContextHook" />
</shutdownHooks>
<plugins>
... security plugins config...
</plugins>
</broker>
<import resource="jetty.xml"/>
</beans>
启动args:
/usr/java/default/bin/java -Xms256M -Xmx1G -Dorg.apache.activemq.UseDedicatedTaskRunner=false -XX:HeapDumpPath=/var/logs/heapDumps -XX:+HeapDumpOnOutOfMemoryError -Dcom.sun.management.jmxremote.port=8162 -Dcom.sun.management.jmxremote.rmi.port=8162 -Dcom.sun.management.jmxremote.password.file=/opt/apache-activemq-5.13.0//conf/jmx.password -Dcom.sun.management.jmxremote.access.file=/opt/apache-activemq-5.13.0//conf/jmx.access -Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote -Djava.awt.headless=true -Djava.io.tmpdir=/opt/apache-activemq-5.13.0//tmp -Dactivemq.classpath=/opt/apache-activemq-5.13.0//conf:/opt/apache-activemq-5.13.0//../lib/ -Dactivemq.home=/opt/activemq -Dactivemq.base=/opt/activemq -Dactivemq.conf=/opt/apache-activemq-5.13.0//conf -Dactivemq.data=/opt/apache-activemq-5.13.0//data -jar /opt/activemq/bin/activemq.jar start
UPD: 来自Eclipse MemoryAnalizer:
Leak Suspects
247,036 instances of "org.apache.activemq.command.ActiveMQBytesMessage", loaded by "java.net.URLClassLoader @ 0xc02e9470" occupy 811,943,360 (76.92%) bytes.
81 instances of "org.apache.activemq.broker.region.cursors.FilePendingMessageCursor", loaded by "java.net.URLClassLoader @ 0xc02e9470" occupy 146,604,368 (13.89%) bytes.
UPD: 在出现OOM错误之前,日志中存在多个错误,如下所示:
| ERROR | Could not accept connection from null: java.lang.IllegalStateException: Timer already cancelled. | org.apache.activemq.broker.TransportConnector | ActiveMQ BrokerService[cms-mq] Task-13707
| INFO | The connection to 'null' is taking a long time to shutdown. | org.apache.activemq.broker.TransportConnection | ActiveMQ BrokerService[cms-mq] Task-13738
会在调试它时提供任何帮助。 如果需要,可以提供其他信息。
答案 0 :(得分:2)
有一种猜测是,你通过STOMP从生产者那里获得消息并最终摧毁代理内存。你已经关闭了生产者流量控制,甚至可以通过默认的JMS客户端实现这一点,并且STOMP更容易进入这种情况,因为默认情况下没有回到生产者的ack允许流量控制机制,你必须在每次发送时都要求收据才能得到。
要进行调试,您需要通过控制台或您选择的其他工具开始检查您的代理日志以及目标和使用情况统计信息,以了解代理的状态。
答案 1 :(得分:0)
我检查了客户端代码(ruby stomp客户端),结果发现有'activemq.subscriptionName'子标头没有'client-id'连接头。设置“activemq.subscriptionName”订阅标头时,表示您希望订户具有持久性。但是你也应该设置'client-id'连接头,否则它是自动生成的。当'client-id'标头未设置时,我们遇到这样一种情况:当它重新连接时,代理无法通过它的客户端ID识别stomp客户端。因此,有许多离线持久主题订阅者和消息堆积在每个client-id =&gt; OOM错误。