Question

使用：HornetQ 2.0.0.CR2 独立/非群集服务器的默认配置。

当我尝试使用大日志（＆gt; 1Gb）启动服务器时，我遇到了OutOfMemory异常：

[main] 12:59:43,505 INFO [org.hornetq.integration.bootstrap.HornetQBootstrapServer]  Starting HornetQ Server
[main] 12:59:44,526 INFO [org.hornetq.core.server.impl.HornetQServerImpl]  live server is starting..
[main] 12:59:44,532 WARNING [org.hornetq.core.server.management.impl.ManagementServiceImpl]  It has been detected that the cluster admin user and password which are used to replicate management operation from one node to the other have not been changed from the installation default. Please see the HornetQ user guide for instructions on how to do this.
[main] 12:59:44,564 WARNING [org.hornetq.core.persistence.impl.journal.JournalStorageManager]  AIO wasn't located on this platform, it will fall back to using pure Java NIO. If your platform is Linux, install LibAIO to enable the AIO journal
[main] 12:59:44,565 INFO [org.hornetq.core.persistence.impl.journal.JournalStorageManager]  Using NIO Journal
Exception in thread "hornetq-expiry-reaper-thread" java.lang.OutOfMemoryError: GC overhead limit exceeded
at java.util.concurrent.ConcurrentHashMap.values(ConcurrentHashMap.java:1011)
at org.hornetq.core.postoffice.impl.PostOfficeImpl$Reaper.run(PostOfficeImpl.java:1083)
at java.lang.Thread.run(Thread.java:637)
[main] 13:00:17,135 SEVERE [org.hornetq.integration.bootstrap.HornetQBootstrapServer]  Failed to start server
java.lang.IllegalStateException: Incompletely deployed:

DEPLOYMENTS IN ERROR:
  Deployment "JMSServerManager" is in error due to: java.lang.OutOfMemoryError: GC overhead limit exceeded

at org.jboss.kernel.plugins.deployment.AbstractKernelDeployer.internalValidate(AbstractKernelDeployer.java:278)
at org.jboss.kernel.plugins.deployment.AbstractKernelDeployer.validate(AbstractKernelDeployer.java:174)
at org.hornetq.integration.bootstrap.HornetQBootstrapServer.bootstrap(HornetQBootstrapServer.java:159)
at org.jboss.kernel.plugins.bootstrap.AbstractBootstrap.run(AbstractBootstrap.java:83)
at org.hornetq.integration.bootstrap.HornetQBootstrapServer.run(HornetQBootstrapServer.java:117)
at org.hornetq.integration.bootstrap.HornetQBootstrapServer.main(HornetQBootstrapServer.java:73)
Exception in thread "main" java.lang.IllegalStateException: Incompletely deployed:

DEPLOYMENTS IN ERROR:
  Deployment "JMSServerManager" is in error due to: java.lang.OutOfMemoryError: GC overhead limit exceeded

at org.jboss.kernel.plugins.deployment.AbstractKernelDeployer.internalValidate(AbstractKernelDeployer.java:278)
at org.jboss.kernel.plugins.deployment.AbstractKernelDeployer.validate(AbstractKernelDeployer.java:174)
at org.hornetq.integration.bootstrap.HornetQBootstrapServer.bootstrap(HornetQBootstrapServer.java:159)
at org.jboss.kernel.plugins.bootstrap.AbstractBootstrap.run(AbstractBootstrap.java:83)
at org.hornetq.integration.bootstrap.HornetQBootstrapServer.run(HornetQBootstrapServer.java:117)
at org.hornetq.integration.bootstrap.HornetQBootstrapServer.main(HornetQBootstrapServer.java:73)

当消费者停止处理消息并且我需要重新启动服务器时，这可能发生在现实生活中。

有什么解决方法吗？或者我应该尝试修改哪些配置？

Answer 1

事实证明，完全避免这个问题很简单。

默认配置中未启用 Paging ！

在hornetq-configuration.xml中添加这两行应该可以解决问题：

   <address-settings>
      <!--default for catch all-->
      <address-setting match="#">
         <dead-letter-address>jms.queue.DLQ</dead-letter-address>
         <expiry-address>jms.queue.ExpiryQueue</expiry-address>
         <redelivery-delay>0</redelivery-delay>
         <page-size-bytes>10485760</page-size-bytes>
         <message-counter-history-day-limit>10</message-counter-history-day-limit>

         <!-- Add these 2 lines -->
         <max-size-bytes>104857600</max-size-bytes>
         <address-full-policy>PAGE</address-full-policy>

      </address-setting>
   </address-settings>

现在可以有大量的队列等待处理。

Answer 2

从here看来你的堆太小了。

并行收集器会抛出一个如果时间太长，OutOfMemoryError 被用于垃圾收集：如果超过98％的总时间花在垃圾收集上少花钱超过2％的堆被恢复，一个将抛出OutOfMemoryError。这个功能旨在防止运行的应用程序制作时延长一段时间因为堆很少或没有进展太小。如有必要，这个可以通过添加功能来禁用功能选项-XX：-UseGCOverheadLimit到命令行。

您是否尝试过修改JVM内存选项，特别是-Xmx（最大内存可分配）？我怀疑你需要增加你的JVM最大内存，给它足够的余量来处理你的消息。

Answer 3

如果是在开发人员身上，您可以通过删除HornetQ工作目录（例如〜/ work / hornetq）来删除队列。

HornetQ OutOfMemory与大杂志一起创业

3 个答案: