[jbossts-issues] [JBoss JIRA] (JBTM-1246) Improve implementation of Parallel Prepare

[Michael Musgrove (JIRA)]

     [ https://issues.jboss.org/browse/JBTM-1246?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Michael Musgrove updated JBTM-1246:
-----------------------------------

        Status: Resolved  (was: Pull Request Sent)
    Resolution: Done


github pull requests passed.

The implementation uses java executors and prepares 2PC unaware resource in parallel with the 2PC aware ones - the enhancement to run 2PC unaware resources after the 2PC aware ones have voted will be done on master (see linked JIRA JBTM-1356). The fix also addresses parallel commit. The last resource in the prepared list is prepared on the callers thread.
                
> Improve implementation of Parallel Prepare
> ------------------------------------------
>
>                 Key: JBTM-1246
>                 URL: https://issues.jboss.org/browse/JBTM-1246
>             Project: JBoss Transaction Manager
>          Issue Type: Task
>      Security Level: Public(Everyone can see) 
>          Components: Transaction Core
>            Reporter: Tom Jenkinson
>            Assignee: Michael Musgrove
>             Fix For: 4.17.3, 5.0.0.M2
>
>         Attachments: asyncPrepareWithPool.patch
>
>
> Considerations:
> 1. Threading in AS - should be using JEE mechanism
> 2. Can't parallelise the LastResource ;)

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