[jbossts-issues] [JBoss JIRA] (JBTM-2165) CMR synchronisations should be interposed

[Michael Musgrove (JIRA)]

     [ https://issues.jboss.org/browse/JBTM-2165?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Michael Musgrove updated JBTM-2165:
-----------------------------------

              Status: Pull Request Sent  (was: Open)
    Git Pull Request: https://github.com/jbosstm/narayana/pull/658, https://github.com/jbosstm/narayana/pull/659


A normal beforeCompletion synchronisation (aka session synch) is allowed to enlist a CMR resource into a transaction which in turn will register its own synch. The latter must be ordered after any synchs that have already ran or are already running.

The fix is to register CMR synchs as interposed (see javax.transaction.TransactionSynchronizationRegistry#registerInterposedSynchronization) which are guaranteed to run after all normal session synchs have been called.

> CMR synchronisations should be interposed
> -----------------------------------------
>
>                 Key: JBTM-2165
>                 URL: https://issues.jboss.org/browse/JBTM-2165
>             Project: JBoss Transaction Manager
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>          Components: JTA
>    Affects Versions: 4.17.19, 5.0.1
>            Reporter: Michael Musgrove
>            Assignee: Michael Musgrove
>             Fix For: 4.17.20, 5.0.2
>
>
> A CMR resource registers a synchronization to perform deferred cleanup of xids. Since it is possible for another synchronization to enlist a CMR resource the CMR synch must be ordered after non interposed synchronizations.



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