[Performance Tuning] - Failover performance
by Ron K
Ron K [http://community.jboss.org/people/ronsen] created the discussion
"Failover performance"
To view the discussion, visit: http://community.jboss.org/message/612069#612069
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Since the ability (ejb) to failover relies on the client side(if im not mistaken), the failover on a node crashing shouldnt be measurable or?
The client downloads the dp-object and handles it itsself, so will there be a measurable "delay" if a servercrash occurs and it fails over to another node?
My test was to deploy an ejb on 3 nodes and send counting numbers to the cluster. Whenever a node receives a number, it writes the receivment to the database whereas the database adds a timestamp, so that the times wont change according to the server clocks.
So, whenever a failover occurs, there should be a measureable delay between No. X and Y, just in case it causes some.
The result was, that theres (with nanosecs) actually none...
Did I understand anything wrong or does a measureable delay only occurs if theres anything has to be restored from replicated data?
Thanks in advance,
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12 years, 9 months
[Beginner's Corner] - Problems Migrating from WAS to JBoss 6
by Julie H
Julie H [http://community.jboss.org/people/julieh] created the discussion
"Problems Migrating from WAS to JBoss 6"
To view the discussion, visit: http://community.jboss.org/message/612665#612665
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Hi.
I am in the processing of migrating one of our applications from WAS to JBoss 6, and have come across an issue I am having trouble resolving. Would appreciate it if someone could provide some insight into this problem.
The application follows the EJB2.0 spec and uses Xdoclet annotations.
We want to first get the application up and running on JBOSS 6, with a view to then converting the application to use EJB3.0 spec.
I have installed the application successfully in JBoss 5 (just to check whether I got the same issue as in JBoss 6), and it installs successfully (haven't run it yet though - so it may fail at runtime).
The error I am getting is as follows :
2011-06-30 15:05:32,554 ERROR [org.jboss.kernel.plugins.dependency.AbstractKernelController] (HDScanner) Error installing to Create: name=jboss.j2ee:jndiName=BPProcessAudit,service=EJB state=Configured mode=Manual requiredState=Create: java.lang.ClassCastException: $Proxy193 cannot be cast to javax.ejb.EJBLocalHome
at org.jboss.ejb.plugins.local.BaseLocalProxyFactory.getEJBLocalHome(BaseLocalProxyFactory.java:244) [:6.0.0.Final]
at org.jboss.ejb.Container.createService(Container.java:923) [:6.0.0.Final]
at org.jboss.ejb.SessionContainer.createService(SessionContainer.java:159) [:6.0.0.Final]
at org.jboss.system.ServiceMBeanSupport.jbossInternalCreate(ServiceMBeanSupport.java:323) [:6.0.0.Final (Build SVNTag:JBoss_6.0.0.Final date: 20101228)]
at org.jboss.system.ServiceMBeanSupport.jbossInternalLifecycle(ServiceMBeanSupport.java:299) [:6.0.0.Final (Build SVNTag:JBoss_6.0.0.Final date: 20101228)]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [:1.6.0_13]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) [:1.6.0_13]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) [:1.6.0_13]
at java.lang.reflect.Method.invoke(Method.java:597) [:1.6.0_13]
at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:157) [:6.0.0.GA]
at org.jboss.mx.server.Invocation.dispatch(Invocation.java:96) [:6.0.0.GA]
at org.jboss.mx.server.Invocation.invoke(Invocation.java:88) [:6.0.0.GA]
at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:271) [:6.0.0.GA]
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:670) [:6.0.0.GA]
at org.jboss.system.microcontainer.ServiceProxy.invoke(ServiceProxy.java:189) [:2.2.0.GA]
at $Proxy41.create(Unknown Source) at org.jboss.system.microcontainer.CreateDestroyLifecycleAction.installAction(CreateDestroyLifecycleAction.java:54) [:2.2.0.GA]
at org.jboss.system.microcontainer.CreateDestroyLifecycleAction.installAction(CreateDestroyLifecycleAction.java:42) [:2.2.0.GA]
at org.jboss.dependency.plugins.action.SimpleControllerContextAction.simpleInstallAction(SimpleControllerContextAction.java:62) [jboss-dependency.jar:2.2.0.GA]
at org.jboss.dependency.plugins.action.AccessControllerContextAction.install(AccessControllerContextAction.java:71) [jboss-dependency.jar:2.2.0.GA]
at org.jboss.dependency.plugins.AbstractControllerContextActions.install(AbstractControllerContextActions.java:51) [jboss-dependency.jar:2.2.0.GA]
at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:379) [jboss-dependency.jar:2.2.0.GA]
at org.jboss.system.microcontainer.ServiceControllerContext.install(ServiceControllerContext.java:301) [:2.2.0.GA]
at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:2044) [jboss-dependency.jar:2.2.0.GA]
at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:1083) [jboss-dependency.jar:2.2.0.GA]
at org.jboss.dependency.plugins.AbstractController.executeOrIncrementStateDirectly(AbstractController.java:1322) [jboss-dependency.jar:2.2.0.GA]
at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1246) [jboss-dependency.jar:2.2.0.GA]
at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1139) [jboss-dependency.jar:2.2.0.GA]
at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:939) [jboss-dependency.jar:2.2.0.GA]
at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:654) [jboss-dependency.jar:2.2.0.GA]
at org.jboss.system.ServiceController.doChange(ServiceController.java:671) [:6.0.0.Final (Build SVNTag:JBoss_6.0.0.Final date: 20101228)]
at org.jboss.system.ServiceController.create(ServiceController.java:405) [:6.0.0.Final (Build SVNTag:JBoss_6.0.0.Final date: 20101228)]
at sun.reflect.GeneratedMethodAccessor321.invoke(Unknown Source) [:1.6.0_13]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) [:1.6.0_13]
at java.lang.reflect.Method.invoke(Method.java:597) [:1.6.0_13]
at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:157) [:6.0.0.GA]
at org.jboss.mx.server.Invocation.dispatch(Invocation.java:96) [:6.0.0.GA]
at org.jboss.mx.server.Invocation.invoke(Invocation.java:88) [:6.0.0.GA]
at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:271) [:6.0.0.GA]
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:670) [:6.0.0.GA]
at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210) [:6.0.0.GA]
at $Proxy173.create(Unknown Source) at org.jboss.ejb.EjbModule.createService(EjbModule.java:449) [:6.0.0.Final]
at org.jboss.system.ServiceMBeanSupport.jbossInternalCreate(ServiceMBeanSupport.java:323) [:6.0.0.Final (Build SVNTag:JBoss_6.0.0.Final date: 20101228)]
at org.jboss.system.ServiceMBeanSupport.jbossInternalLifecycle(ServiceMBeanSupport.java:299) [:6.0.0.Final (Build SVNTag:JBoss_6.0.0.Final date: 20101228)]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [:1.6.0_13]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) [:1.6.0_13]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) [:1.6.0_13]
at java.lang.reflect.Method.invoke(Method.java:597) [:1.6.0_13]
at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:157) [:6.0.0.GA]
at org.jboss.mx.server.Invocation.dispatch(Invocation.java:96) [:6.0.0.GA]
at org.jboss.mx.server.Invocation.invoke(Invocation.java:88) [:6.0.0.GA]
at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:271) [:6.0.0.GA]
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:670) [:6.0.0.GA]
at org.jboss.system.microcontainer.ServiceProxy.invoke(ServiceProxy.java:189) [:2.2.0.GA]
at $Proxy41.create(Unknown Source) at org.jboss.system.microcontainer.CreateDestroyLifecycleAction.installAction(CreateDestroyLifecycleAction.java:54) [:2.2.0.GA]
at org.jboss.system.microcontainer.CreateDestroyLifecycleAction.installAction(CreateDestroyLifecycleAction.java:42) [:2.2.0.GA]
at org.jboss.dependency.plugins.action.SimpleControllerContextAction.simpleInstallAction(SimpleControllerContextAction.java:62) [jboss-dependency.jar:2.2.0.GA]
at org.jboss.dependency.plugins.action.AccessControllerContextAction.install(AccessControllerContextAction.java:71) [jboss-dependency.jar:2.2.0.GA]
at org.jboss.dependency.plugins.AbstractControllerContextActions.install(AbstractControllerContextActions.java:51) [jboss-dependency.jar:2.2.0.GA]
at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:379) [jboss-dependency.jar:2.2.0.GA]
at org.jboss.system.microcontainer.ServiceControllerContext.install(ServiceControllerContext.java:301) [:2.2.0.GA]
at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:2044) [jboss-dependency.jar:2.2.0.GA]
at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:1083) [jboss-dependency.jar:2.2.0.GA]
at org.jboss.dependency.plugins.AbstractController.executeOrIncrementStateDirectly(AbstractController.java:1322) [jboss-dependency.jar:2.2.0.GA]
at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1246) [jboss-dependency.jar:2.2.0.GA]
at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1139) [jboss-dependency.jar:2.2.0.GA]
at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:939) [jboss-dependency.jar:2.2.0.GA]
at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:654) [jboss-dependency.jar:2.2.0.GA]
at org.jboss.system.ServiceController.doChange(ServiceController.java:671) [:6.0.0.Final (Build SVNTag:JBoss_6.0.0.Final date: 20101228)]
at org.jboss.system.ServiceController.create(ServiceController.java:405) [:6.0.0.Final (Build SVNTag:JBoss_6.0.0.Final date: 20101228)]
at org.jboss.system.ServiceController.create(ServiceController.java:370) [:6.0.0.Final (Build SVNTag:JBoss_6.0.0.Final date: 20101228)]
at org.jboss.system.deployers.ServiceDeployer.create(ServiceDeployer.java:184) [:6.0.0.Final]
at org.jboss.system.deployers.ServiceDeployer.deploy(ServiceDeployer.java:99) [:6.0.0.Final]
at org.jboss.system.deployers.ServiceDeployer.deploy(ServiceDeployer.java:49) [:6.0.0.Final]
at org.jboss.deployers.spi.deployer.helpers.AbstractSimpleRealDeployer.internalDeploy(AbstractSimpleRealDeployer.java:62) [:2.2.0.GA]
at org.jboss.deployers.spi.deployer.helpers.AbstractRealDeployer.deploy(AbstractRealDeployer.java:55) [:2.2.0.GA]
at org.jboss.deployers.plugins.deployers.DeployerWrapper.deploy(DeployerWrapper.java:179) [:2.2.0.GA]
at org.jboss.deployers.plugins.deployers.DeployersImpl.doDeploy(DeployersImpl.java:1832) [:2.2.0.GA]
at org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1550) [:2.2.0.GA]
at org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1571) [:2.2.0.GA]
at org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1603) [:2.2.0.GA]
at org.jboss.deployers.plugins.deployers.DeployersImpl.install(DeployersImpl.java:1491) [:2.2.0.GA]
at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:379) [jboss-dependency.jar:2.2.0.GA]
at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:2044) [jboss-dependency.jar:2.2.0.GA]
at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:1083) [jboss-dependency.jar:2.2.0.GA]
at org.jboss.dependency.plugins.AbstractController.executeOrIncrementStateDirectly(AbstractController.java:1322) [jboss-dependency.jar:2.2.0.GA]
at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1246) [jboss-dependency.jar:2.2.0.GA]
at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1139) [jboss-dependency.jar:2.2.0.GA]
at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:939) [jboss-dependency.jar:2.2.0.GA]
at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:654) [jboss-dependency.jar:2.2.0.GA]
at org.jboss.deployers.plugins.deployers.DeployersImpl.change(DeployersImpl.java:1983) [:2.2.0.GA]
at org.jboss.deployers.plugins.deployers.DeployersImpl.process(DeployersImpl.java:1076) [:2.2.0.GA]
at org.jboss.deployers.plugins.main.MainDeployerImpl.process(MainDeployerImpl.java:679) [:2.2.0.GA]
at org.jboss.system.server.profileservice.deployers.MainDeployerPlugin.process(MainDeployerPlugin.java:106) [:6.0.0.Final]
at org.jboss.profileservice.dependency.ProfileControllerContext$DelegateDeployer.process(ProfileControllerContext.java:143) [:0.2.2]
at org.jboss.profileservice.deployment.hotdeploy.HDScanner$HDScanAction.deploy(HDScanner.java:240) [:0.2.2]
at org.jboss.profileservice.deployment.hotdeploy.HDScanner$HDScanAction.complete(HDScanner.java:192) [:0.2.2]
at org.jboss.profileservice.management.TwoPCActionWrapper.doComplete(TwoPCActionWrapper.java:57) [:0.2.2]
at org.jboss.profileservice.management.actions.AbstractTwoPhaseModificationAction.complete(AbstractTwoPhaseModificationAction.java:74) [:0.2.2]
at org.jboss.profileservice.management.actions.AbstractTwoPhaseModificationAction.prepare(AbstractTwoPhaseModificationAction.java:95) [:0.2.2]
at org.jboss.profileservice.management.ModificationSession.prepare(ModificationSession.java:87) [:0.2.2]
at org.jboss.profileservice.management.AbstractActionController.internalPerfom(AbstractActionController.java:234) [:0.2.2]
at org.jboss.profileservice.management.AbstractActionController.performWrite(AbstractActionController.java:213) [:0.2.2]
at org.jboss.profileservice.management.AbstractActionController.perform(AbstractActionController.java:150) [:0.2.2]
at org.jboss.profileservice.management.AbstractActionController.perform(AbstractActionController.java:135) [:0.2.2]
at org.jboss.profileservice.deployment.hotdeploy.HDScanner.scan(HDScanner.java:146) [:0.2.2]
at org.jboss.profileservice.deployment.hotdeploy.HDScanner.run(HDScanner.java:90) [:0.2.2]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441) [:1.6.0_13]
at java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:317) [:1.6.0_13]
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:150) [:1.6.0_13]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$101(ScheduledThreadPoolExecutor.java:98) [:1.6.0_13]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.runPeriodic(ScheduledThreadPoolExecutor.java:181) [:1.6.0_13]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:205) [:1.6.0_13]
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [:1.6.0_13]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [:1.6.0_13]
at java.lang.Thread.run(Thread.java:619) [:1.6.0_13]
This error occurs for each of the EJB's contained in the application.
The class which causes the above problem is :
package com.xx.dao.ejb;
import java.rmi.RemoteException;
import javax.ejb.CreateException;
import javax.ejb.EJBException;
import javax.ejb.SessionBean;
import javax.ejb.SessionContext;
// other imports deleted
/**
* --
* @ejb.bean
* name = "BPProcessAudit"
* display-name = "BPProcessAudit Database Access Bean"
* type = "Stateless"
* transaction-type = "Bean"
* jndi-name = "ejb/xx/xx/BPProcessAudit"
* local-jndi-name = "ejb/xx/xx/BPProcessAuditLocal"
* view-type = "both"
*
* @ejb.home
* remote-class = "com.xx.dao.ejb.interfaces.BPProcessAuditHome"
* local-class = "com.xx.dao.ejb.interfaces.BPProcessAuditLocalHome"
*
* @ejb.interface
* remote-class = "com.xx.dao.ejb.interfaces.BPProcessAudit"
* local-class = "com.xx.dao.ejb.interfaces.BPProcessAuditLocal"
*
* @ejb.util
* generate = "logical"
*
* @ejb.resource-ref
* res-ref-name = "MYDB_REF"
* res-type = "javax.sql.DataSource"
* res-auth = "Container"
* jndi-name = "jdbc/AXISDB"
*
* @websphere.resource-ref
* res-ref-name = "MYDB_REF"
* isolation-level = "TRANSACTION_READ_COMMITTED"
*/
public class BPProcessAuditEJB implements SessionBean {
//Static fields
private static final long serialVersionUID = -76401858385693261L;
//Instance fields
private SessionContext sessionContext;
public void ejbCreate() throws EJBException, CreateException {
}
public void ejbActivate() throws EJBException, RemoteException {
}
public void ejbPassivate() throws EJBException, RemoteException {
}
public void ejbRemove() throws EJBException, RemoteException {
}
/**
*
* @param primaryKey
* @return
* @throws EJBException
* --
* @ejb.interface-method
* view-type = "both"
*/
public BPProcessAuditVO find(BPProcessAuditPK primaryKey) throws EJBException, DataAccessException {
// code deleted
}
The Local and remote interfaces, and the utility class are all generated by Xdoclet.
Please let me know what other information would be useful in identifying the issue.
Thanks
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12 years, 9 months