[JBoss JIRA] Created: (JBMESSAGING-544) Use NBIO for connection model
by Tim Fox (JIRA)
Use NBIO for connection model
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Key: JBMESSAGING-544
URL: http://jira.jboss.com/jira/browse/JBMESSAGING-544
Project: JBoss Messaging
Issue Type: Task
Reporter: Tim Fox
Assigned To: Tim Fox
Fix For: 1.2.1
For throughput and scalability we need to use a non blocking IO model to provide connections between jms clients and server.
Unfortunately the JBoss remoting model does not currently allows this.
We can either drive JBoss Remoting to support this model (may take some time)
Or write out own connection functionality - this could be fairly straightforward if we use tools such as Apache MINA.
This would also solve the problem of providing a functional and performant multiplex transport.
Essentially we need a bidirectional channel between jms client and server. On either end bytes can be read or witten in a non blocking fashion.
On top of that we can introduce simple framing in order to provide multiplex functionality.
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17 years, 3 months
[JBoss JIRA] Created: (JBMESSAGING-604) Duplicate message detection
by Tim Fox (JIRA)
Duplicate message detection
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Key: JBMESSAGING-604
URL: http://jira.jboss.com/jira/browse/JBMESSAGING-604
Project: JBoss Messaging
Issue Type: Feature Request
Reporter: Tim Fox
Assigned To: Tim Fox
Fix For: 1.2.1
Whereas JMS requires once and only once *delivery* of messages, there are no such guarantees when sending messages to a queue/durable sub.
This can result in duplicate messages existing in a queue or durable sub.
For some clients this is unacceptable, so we should implement a feature which alerts to the presence of duplicates.
This can be done by keeping a persistent cache of message (or transaction) id on the server. Entries should time out after a period of time.
This will not remove duplicates 100% of the time since we cannot cache the previous values of id for ever, but only for a window.
See forum thread for more details
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17 years, 3 months
[JBoss JIRA] Created: (HIBERNATE-50) Embedded Objects get set to null if all its members are null
by milan w?lke (JIRA)
Embedded Objects get set to null if all its members are null
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Key: HIBERNATE-50
URL: http://jira.jboss.com/jira/browse/HIBERNATE-50
Project: Hibernate
Issue Type: Bug
Environment: WinXP SP2, JBoss 4.0.4 GA as well as JBoss 4.0.5 GA, installation profile ejb3
Reporter: milan w?lke
Assigned To: Steve Ebersole
When having an embedded object only containing members of non-simple-types (e.g. String) and fetching it with the entity manager the following happens:
If all columns, the embedded objects values are based on, are null the embedded object itself is set to null even if a non-arg-constructor set it to a non-null value before. A valid workaround is to include a member of a simple-type (e.g. int) in the embedded object. Doing this not all the values can be set to null, which results in not setting the embedded object itself to null, too.
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17 years, 3 months
[JBoss JIRA] Created: (JBAS-3647) Backport SingleRetryInterceptor to 3.2
by Scott M Stark (JIRA)
Backport SingleRetryInterceptor to 3.2
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Key: JBAS-3647
URL: http://jira.jboss.com/jira/browse/JBAS-3647
Project: JBoss Application Server
Issue Type: Feature Request
Security Level: Public (Everyone can see)
Components: Clustering, EJB2
Affects Versions: JBossAS-3.2.8.SP1
Reporter: Scott M Stark
Assigned To: Brian Stansberry
A 3.2.8.SP1 client attempting to connect to a 4.0.4 clustered bean fails with the following error due to the SingleRetryInterceptor not being available in 3.2.8.SP1:
2006-09-12 16:44:30,178 [Thread-0::] - javax.naming.CommunicationException. Root exception is java.lang.ClassNotFoundException:
org.jboss.proxy.ejb.SingleRetryInterceptor (no security manager: RMI class loader disabled)
at sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java:318)
at sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java:132)
at sun.rmi.server.MarshalInputStream.resolveClass(MarshalInputStream.java:143)
at java.io.ObjectInputStream.inputClassDescriptor(ObjectInputStream.java:918)
We should backport this.
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17 years, 3 months
[JBoss JIRA] Created: (JBCLUSTER-180) Calling getters/setters cluster wide - covenience feature
by Galder Zamarreno (JIRA)
Calling getters/setters cluster wide - covenience feature
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Key: JBCLUSTER-180
URL: http://jira.jboss.com/jira/browse/JBCLUSTER-180
Project: JBoss Clustering
Issue Type: Feature Request
Security Level: Public (Everyone can see)
Reporter: Galder Zamarreno
Assigned To: Brian Stansberry
Priority: Optional
We'd like to check the values of an attirbute on all cluster nodes. Is there any quick way to do so?
During the startup of your own JMX MBean service you first have to register it with HAPartition
using registerRPCHandler method in HAPartition [1]. Provide a service name and your own
MBean object as parameters.
When checking a value of an attribute of your mbean in the whole cluster you would invoke
HAPartition.callMethodOnCluster together with service name parameter provided for
registerRPCHandler method. You have to expose this attribute as an operation
However, it would be more convenient to just use getter or setter. thanks,
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17 years, 3 months