Clustering and EJB timers

[mlipp]

Hi,

I have tried -- without success -- to find some information about the handling of ejb timers in a cluster. Is there a failover mechanism? I.e. will a timer created on node X of the cluster be executed by another node if node X fails?

- Michael

[belaban]

If you wrap the timer as a singleton (deploy.singleton) then ti will get picked up on a different host when X crashes. This assume schedules are stored in a shared storage area, e.g. the DB.

Oops, I'm talking JBoss Scheduler here, don't know much about EJB Timers, probably the above applies too.

[starksm64]

No, the ejb timer service currently has no clustering.

[mlipp]

Are there plans to add timer server clustering in the near future?

[starksm64]

Define near future. Nothing exists on the roadmap currently.

[mlipp]

I'll skip the definition. If it isn't on the road map, it can't be near future ;-).

[kod3r]

There is any update for this? Does JBoss currently supports Timer Service clustering (or high-availability)? I'm couldn't find any information about it.

[fsl]

Please enlightnem me, why can't I confgure the timer service as a singleton to get timer service failover in a JBoss cluster? And why is this configuration supposed to work with the scheduler service and not the timer service?

[\s, Fernando Lozano