[jboss-jira] [JBoss JIRA] Updated: (JBCACHE-315) Break locks for state transfer

Wed Oct 10 12:55:06 EDT 2007

     [ http://jira.jboss.com/jira/browse/JBCACHE-315?page=all ]

Manik Surtani updated JBCACHE-315:
----------------------------------

    Fix Version/s: 2.1.0.CR1

> Break locks for state transfer
> ------------------------------
>
>                 Key: JBCACHE-315
>                 URL: http://jira.jboss.com/jira/browse/JBCACHE-315
>             Project: JBoss Cache
>          Issue Type: Feature Request
>      Security Level: Public(Everyone can see) 
>            Reporter: Bela Ban
>         Assigned To: Vladimir Blagojevic
>            Priority: Critical
>             Fix For: 2.1.0.GA, 2.1.0.CR1
>
>
> State transfer needs to acquire a lock on the root to make sure all existing TXs have been completed. However, when a TX takes more time than the lock acquisition timeout, state transfer will fail.
> Therefore, we need to forcefully acquire the locks for the state transfer by force-releasing the existing locks, and rolling back all TXs that held those locks.
> This will ensure that state transfer always succeeds, at the expense of some rolled back TXs.
> We need to investigate how this works with optimistic locking

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