[jbossts-issues] [JBoss JIRA] (JBTM-1104) XTS support for load-balanced scenarios

[Paul Robinson (JIRA)]

     [ https://issues.jboss.org/browse/JBTM-1104?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Paul Robinson updated JBTM-1104:
--------------------------------

               Summary: XTS support for load-balanced scenarios  (was: Does XTS support load-balanced scenarios?)
     Original Estimate:     (was: 1 day)
    Remaining Estimate:     (was: 1 day)
            Issue Type: Enhancement  (was: Task)
         Fix Version/s: 6.0.0.Final
                            (was: 5.0.0.Final)
           Description: 
Enabling session affinity on the load balancer should ensure that all requests for a particular application endpoint, within a particular session, go to the same instance of the web service.

However, XTS advertises a number of endpoint addresses that will not make sense in a load balanced cluster. This is because it would be the internal endpoint address of the particular server that is advertised, rather than the load balancer's external address.

Even if we configured XTS (not yet possible) to offer the address of the LB, we would still have a problem as XTS will use a different session to the application to send protocol messages and thus they will go to a different server that is not aware of this transaction.

  was:Enabling session affinity on the load balancer should ensure that all requests for a particular endpoint, within a particular esion, go to the same instance of the web service and thus use the same subordinate coordinator. However, will protocol messages be guaranteed to go to the same coordinator? I would assume not as they are using a different session.

           Component/s: XTS
                            (was: TXFramework)

    
> XTS support for load-balanced scenarios
> ---------------------------------------
>
>                 Key: JBTM-1104
>                 URL: https://issues.jboss.org/browse/JBTM-1104
>             Project: JBoss Transaction Manager
>          Issue Type: Enhancement
>      Security Level: Public(Everyone can see) 
>          Components: XTS
>            Reporter: Paul Robinson
>            Assignee: Paul Robinson
>             Fix For: 6.0.0.Final
>
>
> Enabling session affinity on the load balancer should ensure that all requests for a particular application endpoint, within a particular session, go to the same instance of the web service.
> However, XTS advertises a number of endpoint addresses that will not make sense in a load balanced cluster. This is because it would be the internal endpoint address of the particular server that is advertised, rather than the load balancer's external address.
> Even if we configured XTS (not yet possible) to offer the address of the LB, we would still have a problem as XTS will use a different session to the application to send protocol messages and thus they will go to a different server that is not aware of this transaction.

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