[jboss-jira] [JBoss JIRA] Updated: (JBAS-7851) Distributed locking API should indicate whether taking lock from another node was necessary

[Brian Stansberry (JIRA)]

     [ https://jira.jboss.org/jira/browse/JBAS-7851?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Brian Stansberry updated JBAS-7851:
-----------------------------------

    Description: 
Callers asking for a lock should be able to distinguish these cases:

1) Lock can't be obtained
2) Lock obtained, and node already held it.
3) Lock obtained, but the node had to make a group RPC to get it

Purpose of this is to use condition 3) as a way to detect failover.

Related to this, the API should also support creation of a new lock category such that the node immediately owns the lock with no group RPC.

  was:
Callers asking for a lock should be able to distinguish these cases:

1) Lock can't be obtained
2) Lock obtained, and node already held it.
3) Lock obtained, but the node had to make a group RPC to get it

Related to this, the API should also support creation of a new lock category such that the node immediately owns the lock with no group RPC.



> Distributed locking API should indicate whether taking lock from another node was necessary
> -------------------------------------------------------------------------------------------
>
>                 Key: JBAS-7851
>                 URL: https://jira.jboss.org/jira/browse/JBAS-7851
>             Project: JBoss Application Server
>          Issue Type: Task
>      Security Level: Public(Everyone can see) 
>          Components: Clustering
>            Reporter: Brian Stansberry
>             Fix For: JBossAS-6.0.0.M4
>
>
> Callers asking for a lock should be able to distinguish these cases:
> 1) Lock can't be obtained
> 2) Lock obtained, and node already held it.
> 3) Lock obtained, but the node had to make a group RPC to get it
> Purpose of this is to use condition 3) as a way to detect failover.
> Related to this, the API should also support creation of a new lock category such that the node immediately owns the lock with no group RPC.

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