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From "Sajida Abdul Salam (JIRA)" <...@geronimo.apache.org>
Subject [jira] Updated: (GERONIMO-555) Write a thread-safe timer/interrupt based transaction timout implementation
Date Wed, 30 Nov 2005 13:25:31 GMT
     [ http://issues.apache.org/jira/browse/GERONIMO-555?page=all ]

Sajida Abdul Salam updated GERONIMO-555:
----------------------------------------

    Attachment: patch.txt
                ThreadSafetyTest.java
                geronimo_interrupts_POST

Attaching the patch, testcases and Documentation

> Write a thread-safe timer/interrupt based transaction timout implementation
> ---------------------------------------------------------------------------
>
>          Key: GERONIMO-555
>          URL: http://issues.apache.org/jira/browse/GERONIMO-555
>      Project: Geronimo
>         Type: New Feature
>   Components: transaction manager
>     Reporter: David Jencks
>      Fix For: Wish List
>  Attachments: ThreadSafetyTest.java, geronimo_interrupts_POST, patch.txt
>
> This is a long term research project that will probably take a month of concentrated
effort.
> We should investigate whether it is practical to have a thread safe timer/interrupt based
transaction timeout implementation.  A non-thread safe implementation was present prior to
revision 128441.
> Among the issues that need to be investigated are the extent to which IO is actually
interruptable and what existing drivers do when they are interrupted.  For this to work, managed
connections that get interrupted during io must be reliably destroyed.
> We should also investigate to what extent this provides a solution for deadlock resolution.
> If we decide that this is impractical, we should change the internal time unit for timeouts
from milliseconds to seconds as proposed in GERONIMO-550

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