February 2007 - jboss-jira - Jboss List Archives

[JBoss JIRA] Created: (JBCACHE-931) Move to JBossAOP rather than hand-wiring interceptor chain for JBoss Cache

by Manik Surtani (JIRA)

Move to JBossAOP rather than hand-wiring interceptor chain for JBoss Cache -------------------------------------------------------------------------- Key: JBCACHE-931 URL: http://jira.jboss.com/jira/browse/JBCACHE-931 Project: JBoss Cache Issue Type: Task Security Level: Public (Everyone can see) Affects Versions: 2.0.0.GA Reporter: Manik Surtani Assigned To: Manik Surtani Fix For: 2.1.0.GA This should be a seamless change for end-users, and backward compat should be maintained. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://jira.jboss.com/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira

18 years, 4 months

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[JBoss JIRA] Created: (JBREM-706) In socket transport, prevent client side oneway invocations from artificially reducing concurrency

by Ron Sigal (JIRA)

In socket transport, prevent client side oneway invocations from artificially reducing concurrency -------------------------------------------------------------------------------------------------- Key: JBREM-706 URL: http://jira.jboss.com/jira/browse/JBREM-706 Project: JBoss Remoting Issue Type: Task Security Level: Public (Everyone can see) Affects Versions: 2.2.0.Beta2 (Bluto) Reporter: Ron Sigal Assigned To: Ron Sigal Fix For: 2.2.0.Beta2 (Bluto) There is a subtle problem with the handling of client side oneway invocations in the socket transports (and descendants). After the invocation has been marshalled to the wire, the connection is returned to the connection pool, from which it can be reused, even if the server side handler is still processing the previous invocation. Consequently, invocations can back up and run serially instead of running concurrently. The following dialogue exposes the problem and possible solutions: =============================================================================================================== Ron Sigal wrote Hi Tom, I just noticed an interesting phenomenon that I wanted to tell you about. Maybe it'll be obvious to you, but it surprised me. I'm writing unit tests for socket and http, since they behave differently on oneway invocations. I've got a oneway ThreadPool with two threads and I make 4 oneway invocations, one right after the other. The handler waits for 5 seconds before returning. I expected that they would all run on the server simultaneously, but they don't. What happens is something like this: (1) invocation 1 gets made on thread 1 and socket connection 1 to ServerThread 1 is created; (2) invocation 2 gets made on thread 2 and socket connection 2 to ServerThread 2 gets created; (3) invocation 3 gets made on thead 1 and socket connection 1 gets reused. But ServerThread 1 is still sleeping, so invocation 3 waits for 5 seconds. Not a big deal, but I might not have guessed it if I hadn't seen it. =============================================================================================================== Ron Sigal wrote Hi Tom, Well, it's stranger than I thought. It turns out that for client side oneway invocations, socket, which returns immediately after marshaling the invocation, can be slower than http, which waits for a response. Consider a client side oneway threadpool with 2 threads and a queue of size 1, and suppose there are 4 invocations in quick succession. The handler takes 5 seconds per invocation. http: 1. 1st invocation runs in the first threadpool thread. 2. 2nd invocation runs in the second threadpool thread 3. 3rd invocation goes on the queue 4 4th invocation runs on the main thread Assuming there are at least 3 server threads, invocations 1, 2, and 4 run in the first 5 seconds, and then invocation 3 runs. Total time 10 seconds. socket (one possible scenario): 1. 1st invocation runs in the first threadpool thread and returns the socket connection to the pool 2. 2nd invocation runs in a threadpool thread, finds the pooled connection, marshals the invocation, and returns the connection to the pool. On the server side, the ServerThread runs the invocations after finishing the 1st invocation. 3. 3rd invocation runs in a threadpool thread, finds the pooled connection, marshals the invocation, and returns the connection to the pool. On the server side, the ServerThread runs the invocations after finishing the 2nd invocation. 4. 4th invocation runs in a threadpool thread, finds the pooled connection, marshals the invocation, and returns the connection to the pool. On the server side, the ServerThread runs the invocations after finishing the 3rd invocation. Total time: 20 seconds. I've seen this happen. The scary thing is that the story scales. With more threads on the client side and server side, http can run more and more invocations in parallel. Whereas socket could end up running arbitrarily many invocations serially. I think that having MicroSocketClientInvoker return after marshaling a client side oneway invocation isn't a good idea. Ovidiu's JBREM-685 ( <http://jira.jboss.com/jira/browse/JBREM-685>A server needs redundant information to detect a one way invocation) <http://jira.jboss.com/jira/browse/JBREM-685> gives me a half baked idea. Maybe these two ways of tagging a oneway invocation could be used to distinguish client side from server side oneway invocations. Or something like that. By the way, I think that there's no problem with server side oneway invocations, since a single ServerInvoker can keep shoving invocations into the threadpool. -Ron =============================================================================================================== Tom Elrod wrote: Wow. Never thought about this happening but makes sense. So the real problem with the socket client invoker is it pools the connections when doing oneway invocations. So it is queuing up invocations on the same connection which can only be processed serially on the server side. Think maybe your idea about using the ONEWAY_FLAG on the client can work. Basically am thinking we'd have to check that before returning the connection to pool and if is set, then throw away the connection (i.e. don't put back in pool). This way, the next oneway invocation would not be using the same connection and on the server side, should use another available server thread to do the process (so could be in parallel). However, this means that incur more overhead on the client side to create a new connection for each oneway invocation, but is maybe worth the cost (too bad we can't tell if serve will take a long time or not). Let me know what you think. =============================================================================================================== Ron Sigal wrote: It seems to me that MicroSocketClientInvoker could: ... 2. in the case of client side oneway invocations, either throw away the connection and return immediately, or just not return until it gets a response from the server. Since it's on a separate thread, maybe the latter is preferable, since then it can return the connection to the pool after it gets a response. =============================================================================================================== Tom Elrod wrote: Yeah, this is a tricky one. On the one hand, if don't throw away the connection and wait for the server response AND the server takes a long time, would be possible to exhaust the pool since all threads will be stuck waiting for server to respond. With the new change to the thread pool to use the RUN mode, would mean calling threads would then be making the remote call and would pretty much be negating the purpose of oneway client side (since client caller thread would be making the network call and blocking until gets response). However, if do throw away the connection, then means that in general have defeated purpose of connection pooling since will have to create a new connection each time oneway client side invocations are made. So if the server processes the requests quickly, would be taking on the extra overhead of creating a new client connection for every call. Hmmm. Could go either way if feel strongly one way or another. However think I am leaning towards throwing away the connection. =============================================================================================================== Ron Sigal wrote: This might be complicating things, but for client side oneway invocations we could set a short per invocation timeout, say 1 second or 5 seconds. If the response comes back, put the connection back in the pool. If it times out, throw the connection away. Don't know how to pick the timeout, though. =============================================================================================================== Tom Elrod wrote: I hate getting too complicated as tends to increase the chance of introducing bugs. However, if wanted to do this, would say need to make the timeout very low, i.e. 1 second. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://jira.jboss.com/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira

18 years, 4 months

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[JBoss JIRA] Created: (EJBTHREE-876) Up-port to trunk of EJBTHREE-875

by Carlo de Wolf (JIRA)

Up-port to trunk of EJBTHREE-875 -------------------------------- Key: EJBTHREE-876 URL: http://jira.jboss.com/jira/browse/EJBTHREE-876 Project: EJB 3.0 Issue Type: Sub-task Reporter: Carlo de Wolf Fix For: EJB 3.0 RC11 - FD -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://jira.jboss.com/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira

18 years, 4 months

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[JBoss JIRA] Created: (JBCLUSTER-137) Move the load balance policies from the AS cluster module

by Brian Stansberry (JIRA)

Move the load balance policies from the AS cluster module --------------------------------------------------------- Key: JBCLUSTER-137 URL: http://jira.jboss.com/jira/browse/JBCLUSTER-137 Project: JBoss Clustering Issue Type: Sub-task Security Level: Public (Everyone can see) Reporter: Brian Stansberry Assigned To: Brian Stansberry Need to decide with Tom Elrod whether these belong in clustering or remoting. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://jira.jboss.com/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira

18 years, 4 months

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[JBoss JIRA] Created: (JBCLUSTER-138) Move or replace ClusteringTargetsRepository and FamilyClusterInfo

by Brian Stansberry (JIRA)

Move or replace ClusteringTargetsRepository and FamilyClusterInfo ----------------------------------------------------------------- Key: JBCLUSTER-138 URL: http://jira.jboss.com/jira/browse/JBCLUSTER-138 Project: JBoss Clustering Issue Type: Sub-task Security Level: Public (Everyone can see) Reporter: Brian Stansberry Assigned To: Brian Stansberry Fix For: Q3Y6 Work with Tom Elrod to determine what's going to generically provide the functionality that ClusteringTargetsRepository and FCI do. When we do this we have to keep in mind the old detached invokers (unless we decide to get rid of them.) -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://jira.jboss.com/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira

18 years, 4 months

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[JBoss JIRA] Created: (JBAS-3536) Spring Deployer lacks info on Spring compatibility, I get NoSuchMethodError....and try to find which Spring version to use...

by Morten Haavaldsen (JIRA)

Spring Deployer lacks info on Spring compatibility, I get NoSuchMethodError....and try to find which Spring version to use... ----------------------------------------------------------------------------------------------------------------------------- Key: JBAS-3536 URL: http://jira.jboss.com/jira/browse/JBAS-3536 Project: JBoss Application Server Issue Type: Bug Security Level: Public (Everyone can see) Components: Other Affects Versions: JBossAS-4.0.4.GA Environment: WinXP, Spring-2.0-RC2, JBOSS-AS-4.0.4-GA Reporter: Morten Haavaldsen I use the Spring Deployer and get NoSuchMethodError on Spring classes during deployment. I use the Spring Deployer 1.3 and it is the example(the fixed one as well) which gives the exception. So, the big question is: which Spring version is the deployer compatible with? -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://jira.jboss.com/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira

18 years, 4 months

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[JBoss JIRA] Created: (JBAS-4039) Error Instantiating ExpressionFactory

by Kai Hackemesser (JIRA)

Error Instantiating ExpressionFactory ------------------------------------- Key: JBAS-4039 URL: http://jira.jboss.com/jira/browse/JBAS-4039 Project: JBoss Application Server Issue Type: Bug Security Level: Public (Everyone can see) Components: Web (Tomcat) service Affects Versions: JBossAS-5.0.0.Beta1 Environment: Windows XP SP2, Java 6 Reporter: Kai Hackemesser Assigned To: Remy Maucherat Priority: Minor This error is in my console log: 13:40:00,093 ERROR [STDERR] 31.01.2007 13:40:00 com.sun.faces.config.ConfigureListener registerELResolverAndListenerWithJsp SCHWERWIEGEND: Error Instantiating ExpressionFactory java.lang.ClassNotFoundException: com.sun.el.ExpressionFactoryImpl at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1355) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1201) at java.lang.ClassLoader.loadClassInternal(Unknown Source) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Unknown Source) at com.sun.faces.config.ConfigureListener.registerELResolverAndListenerWithJsp(ConfigureListener.java:1682) at com.sun.faces.config.ConfigureListener.contextInitialized(ConfigureListener.java:513) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3827) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4336) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:760) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:740) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:525) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:297) at org.jboss.mx.server.RawDynamicInvoker.invoke(RawDynamicInvoker.java:164) at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:668) at org.apache.catalina.core.StandardContext.init(StandardContext.java:5285) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:297) at org.jboss.mx.server.RawDynamicInvoker.invoke(RawDynamicInvoker.java:164) at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:668) at org.jboss.web.tomcat.tc6.deployers.TomcatDeployment.performDeployInternal(TomcatDeployment.java:302) at org.jboss.web.tomcat.tc6.deployers.TomcatDeployment.performDeploy(TomcatDeployment.java:129) at org.jboss.web.deployers.AbstractWarDeployment.start(AbstractWarDeployment.java:355) at org.jboss.web.deployers.WebModule.startModule(WebModule.java:88) at org.jboss.web.deployers.WebModule.start(WebModule.java:66) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:157) at org.jboss.mx.server.Invocation.dispatch(Invocation.java:96) at org.jboss.mx.server.Invocation.invoke(Invocation.java:88) at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264) at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:668) at org.jboss.system.microcontainer.ServiceProxy.invoke(ServiceProxy.java:184) at $Proxy0.start(Unknown Source) at org.jboss.system.microcontainer.StartStopLifecycleAction.installAction(StartStopLifecycleAction.java:42) at org.jboss.system.microcontainer.ServiceControllerContextAction.install(ServiceControllerContextAction.java:46) at org.jboss.dependency.plugins.AbstractControllerContextActions.install(AbstractControllerContextActions.java:51) at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:226) at org.jboss.system.microcontainer.ServiceControllerContext.install(ServiceControllerContext.java:198) at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:709) at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:429) at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:538) at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:472) at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:320) at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:190) at org.jboss.system.ServiceController.doChange(ServiceController.java:656) at org.jboss.system.ServiceController.start(ServiceController.java:431) at org.jboss.system.deployers.ServiceDeployer.start(ServiceDeployer.java:124) at org.jboss.system.deployers.ServiceDeployer.deploy(ServiceDeployer.java:85) at org.jboss.system.deployers.ServiceDeployer.deploy(ServiceDeployer.java:44) at org.jboss.deployers.plugins.deployers.helpers.AbstractSimpleRealDeployer.deploy(AbstractSimpleRealDeployer.java:53) at org.jboss.deployers.plugins.deployer.AbstractSimpleDeployer.commitDeploy(AbstractSimpleDeployer.java:52) at org.jboss.deployers.plugins.deployer.DeployerWrapper.commitDeploy(DeployerWrapper.java:145) at org.jboss.deployers.plugins.deployment.MainDeployerImpl.commitDeploy(MainDeployerImpl.java:440) at org.jboss.deployers.plugins.deployment.MainDeployerImpl.process(MainDeployerImpl.java:381) at org.jboss.system.server.profileservice.ProfileServiceBootstrap.loadProfile(ProfileServiceBootstrap.java:366) at org.jboss.system.server.profileservice.ProfileServiceBootstrap.bootstrap(ProfileServiceBootstrap.java:246) at org.jboss.kernel.plugins.bootstrap.AbstractBootstrap.run(AbstractBootstrap.java:89) at org.jboss.system.server.profileservice.ServerImpl.doStart(ServerImpl.java:401) at org.jboss.system.server.profileservice.ServerImpl.start(ServerImpl.java:340) at org.jboss.Main.boot(Main.java:210) at org.jboss.Main$1.run(Main.java:508) at java.lang.Thread.run(Unknown Source) -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://jira.jboss.com/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira

18 years, 4 months

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[JBoss JIRA] Created: (JBAS-3460) Allow per-webapp configuration of useJK, snapshotMode and snapshotInterval

by Brian Stansberry (JIRA)

Allow per-webapp configuration of useJK, snapshotMode and snapshotInterval -------------------------------------------------------------------------- Key: JBAS-3460 URL: http://jira.jboss.com/jira/browse/JBAS-3460 Project: JBoss Application Server Issue Type: Feature Request Security Level: Public (Everyone can see) Components: Clustering, Web (Tomcat) service Reporter: Brian Stansberry Assigned To: Brian Stansberry Fix For: JBossAS-5.0.1.CR1 The Tomcat SAR's useJK, snapshotMode and snapshotInterval attributes all drive the creation of valves that are deployed per web-app. Therefore the properties could also be changed per web-app. Need to add them to jboss-web.xml. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://jira.jboss.com/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira

18 years, 4 months

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[JBoss JIRA] Created: (JBAS-3818) Application Client Container capabilities may be useful

by Mike Khlu (JIRA)

Application Client Container capabilities may be useful ------------------------------------------------------- Key: JBAS-3818 URL: http://jira.jboss.com/jira/browse/JBAS-3818 Project: JBoss Application Server Issue Type: Feature Request Security Level: Public (Everyone can see) Components: EJB3, Other Reporter: Mike Khlu Assigned To: Bill Burke Now we have pretty nice @EJB annotation within there no the ugly JNDI-client code required. please look at http://java.sun.com/j2ee/1.4/docs/relnotes/cliref/hman1m/appclient.1m.html and "Creating a Reference to an Enterprise Bean Instance" chapter on J2ee 5 Sun's tutorial. I think that would be great to have application client container's possibilities in the best app server (aka JBoss)!!! sorry, my english isn't glance -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://jira.jboss.com/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira

18 years, 4 months

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[JBoss JIRA] Created: (EJBTHREE-748) The implementation of equals() in org.jboss.ejb3.ProxyUtils.handleCallLocally() throws a NPE when being passed a null argument.

by Nicolas Bielza (JIRA)

The implementation of equals() in org.jboss.ejb3.ProxyUtils.handleCallLocally() throws a NPE when being passed a null argument. ------------------------------------------------------------------------------------------------------------------------------- Key: EJBTHREE-748 URL: http://jira.jboss.com/jira/browse/EJBTHREE-748 Project: EJB 3.0 Issue Type: Bug Environment: Embedded EJB3 container Reporter: Nicolas Bielza When looking up an entity bean, we get a proxy which implements equals() in a broken way: Here's an example: // Proxy NPE test: InitialContext ctx = new InitialContext(); Manager m = (Manager)ctx.lookup("ManagerAction/local"); try { if(m != null) { m.equals(null); } System.err.println("What bug ???"); } catch(NullPointerException e) { System.err.println("ProxyUtils NPE bug detected."); e.printStackTrace(); } And the output: ProxyUtils NPE bug detected. java.lang.NullPointerException at org.jboss.ejb3.ProxyUtils.handleCallLocally(ProxyUtils.java:156) at org.jboss.ejb3.ProxyUtils.handleCallLocally(ProxyUtils.java:137) at org.jboss.ejb3.stateful.StatefulLocalProxy.invoke(StatefulLocalProxy.java:92) at $Proxy34.equals(Unknown Source) at com.alligacom.nett.NetTransferAdminInterface.<init>(NetTransferAdminInterface.java:49) at com.alligacom.nett.NetTransferAdminInterface.main(NetTransferAdminI nterface.java:87) The incriminated line (156) in ProxyUtils is: return new Boolean(ih.toString().equals(args[0].toString())); and should be: return new Boolean(args[0] == null ? false : ih.toString().equals(args[0].toString())); -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://jira.jboss.com/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira

18 years, 5 months

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jboss-jira February 2007