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From "Deepal Jayasinghe (JIRA)" <j...@apache.org>
Subject [jira] Updated: (AXIS2-2941) Tomcat crashes when stateful web service is quite heavily loaded
Date Thu, 12 Jul 2007 11:48:05 GMT

     [ https://issues.apache.org/jira/browse/AXIS2-2941?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Deepal Jayasinghe updated AXIS2-2941:
-------------------------------------

    Priority: Critical  (was: Blocker)

> Tomcat crashes when stateful web service is quite heavily loaded
> ----------------------------------------------------------------
>
>                 Key: AXIS2-2941
>                 URL: https://issues.apache.org/jira/browse/AXIS2-2941
>             Project: Axis 2.0 (Axis2)
>          Issue Type: Bug
>    Affects Versions: 1.1.1
>         Environment: linux SMP kernel 2.6, java 1.5.0_10, axis2 1.1.1 nightly, tomcat
5.5.20
>            Reporter: Michele Mazzucco
>            Priority: Critical
>         Attachments: axis2_logs.log, catalina.2007-07-11.log, catalina.out, qosp_debug.log
>
>
> As soon as the arrival rate grows to about 40 req/second (stateful service, but the service
is very fast, it's not a problem of threads missing) the tomcat crashes. The tomcat connector
settings are
> <Connector port="8081" maxHttpHeaderSize="8192"
>                maxThreads="300" minSpareThreads="25" maxSpareThreads="100"
>                enableLookups="false" redirectPort="8443" acceptCount="100"
>                connectionTimeout="20000" disableUploadTimeout="true" />
> From the logs I see several errors:
> -  Endpoint ServerSocket[addr=0.0.0.0/0.0.0.0,port=0,localport=8081] ignored exception:
java.net.SocketException: Too many open files
> - Endpoint null shutdown due to exception: java.net.SocketException: Too many open files
> - Caught exception (java.lang.ThreadDeath) executing org.apache.tomcat.util.net.LeaderFollowerWorkerThread@1350e24,
terminating thread
> ncl.qosp.controller.LifecycleSupport.initRemoteJmx(LifecycleSupport.java:338) ERROR [Timer-1]
- Unable to create the registry internal error: ObjID already in use 
> java.rmi.server.ExportException: internal error: ObjID already in use
>         at sun.rmi.transport.ObjectTable.putTarget(ObjectTable.java:169)
>         at sun.rmi.transport.Transport.exportObject(Transport.java:75)
>         at sun.rmi.transport.tcp.TCPTransport.exportObject(TCPTransport.java:190)
>         at sun.rmi.transport.tcp.TCPEndpoint.exportObject(TCPEndpoint.java:382)
>         at sun.rmi.transport.LiveRef.exportObject(LiveRef.java:116)
>         at sun.rmi.server.UnicastServerRef.exportObject(UnicastServerRef.java:180)
>         at sun.rmi.registry.RegistryImpl.setup(RegistryImpl.java:92)
>         at sun.rmi.registry.RegistryImpl.<init>(RegistryImpl.java:78)
>         at java.rmi.registry.LocateRegistry.createRegistry(LocateRegistry.java:186)
>         at ncl.qosp.controller.LifecycleSupport.initRemoteJmx(LifecycleSupport.java:332)
>         at ncl.qosp.controller.LifecycleSupport.startUp(LifecycleSupport.java:302)
>         at org.apache.axis2.deployment.ServiceBuilder.loadServiceLifeCycleClass(ServiceBuilder.java:415)
>         at org.apache.axis2.deployment.ServiceBuilder.populateService(ServiceBuilder.java:141)
>         at org.apache.axis2.deployment.repository.util.ArchiveReader.buildServiceGroup(ArchiveReader.java:96)
>         at org.apache.axis2.deployment.repository.util.ArchiveReader.processServiceGroup(ArchiveReader.java:138)
>         at org.apache.axis2.deployment.ServiceDeployer.deploy(ServiceDeployer.java:76)
>         at org.apache.axis2.deployment.DeploymentEngine.doDeploy(DeploymentEngine.java:539)
>         at org.apache.axis2.deployment.repository.util.WSInfoList.update(WSInfoList.java:188)
>         at org.apache.axis2.deployment.RepositoryListener.update(RepositoryListener.java:269)
>         at org.apache.axis2.deployment.RepositoryListener.checkServices(RepositoryListener.java:179)
>         at org.apache.axis2.deployment.RepositoryListener.startListener(RepositoryListener.java:260)
>         at org.apache.axis2.deployment.scheduler.SchedulerTask.checkRepository(SchedulerTask.java:61)
>         at org.apache.axis2.deployment.scheduler.SchedulerTask.run(SchedulerTask.java:68)
>         at org.apache.axis2.deployment.scheduler.Scheduler$SchedulerTimerTask.run(Scheduler.java:76)
>         at java.util.TimerThread.mainLoop(Timer.java:512)
>         at java.util.TimerThread.run(Timer.java:462)
> (the service uses JMX, it registers to the JMX server using ServiceLifeCycle.startUp())
> - org.apache.axis2.deployment.ServiceDeployer.deploy(ServiceDeployer.java:97) ERROR [Timer-1]
- The version.aar service, which is not valid, caused Two services cannot have same name.
 A service with the Version name already exists in the system.
> org.apache.axis2.AxisFault: Two services cannot have same name.  A service with the Version
name already exists in the system.
>         at org.apache.axis2.engine.AxisConfiguration.addServiceGroup(AxisConfiguration.java:316)
>         at org.apache.axis2.deployment.DeploymentEngine.addServiceGroup(DeploymentEngine.java:399)
>         at org.apache.axis2.deployment.ServiceDeployer.deploy(ServiceDeployer.java:80)
>         at org.apache.axis2.deployment.DeploymentEngine.doDeploy(DeploymentEngine.java:539)
>         at org.apache.axis2.deployment.repository.util.WSInfoList.update(WSInfoList.java:188)
>         at org.apache.axis2.deployment.RepositoryListener.update(RepositoryListener.java:269)
>         at org.apache.axis2.deployment.RepositoryListener.checkServices(RepositoryListener.java:179)
>         at org.apache.axis2.deployment.RepositoryListener.startListener(RepositoryListener.java:260)
>         at org.apache.axis2.deployment.scheduler.SchedulerTask.checkRepository(SchedulerTask.java:61)
>         at org.apache.axis2.deployment.scheduler.SchedulerTask.run(SchedulerTask.java:68)
>         at org.apache.axis2.deployment.scheduler.Scheduler$SchedulerTimerTask.run(Scheduler.java:76)
>         at java.util.TimerThread.mainLoop(Timer.java:512)
>         at java.util.TimerThread.run(Timer.java:462)

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