[jboss-jira] [JBoss JIRA] Commented: (EJBTHREE-915) Clustered SFSB cache should not preload from the cache loader

[Brian Stansberry (JIRA)]

    [ http://jira.jboss.com/jira/browse/EJBTHREE-915?page=comments#action_12356349 ] 
            
Brian Stansberry commented on EJBTHREE-915:
-------------------------------------------

Re: the "open question" above, scotto reports he saw the problem when restarting after hard killing the JBoss process. StatefulTreeCache.stop() is not called in a hard kill, hence old nodes are left on disk.

> Clustered SFSB cache should not preload from the cache loader
> -------------------------------------------------------------
>
>                 Key: EJBTHREE-915
>                 URL: http://jira.jboss.com/jira/browse/EJBTHREE-915
>             Project: EJB 3.0
>          Issue Type: Bug
>          Components: Clustering
>    Affects Versions: AS 4.2.0 CR1
>            Reporter: Brian Stansberry
>         Assigned To: Brian Stansberry
>             Fix For: AS 4.2.0 CR2
>
>
> Preloading the cache is causing conflicts with region activation, since the preload happens before the region is activated (and thus pollutes the in memory cache, causing the activation to fail.)  In any case, preloading doesn't make sense for the SFSB cache; any state on disk would be passivated sessions that had been in use on another node; they are only useful in memory if the client fails over. No point aggressively bringing them into memory.
> Fix is to remove the <preload>/</preload> element from the ejb3-clustered-sfsbcache-service.xml file.
> An open question is why there are nodes to be preloaded.  StatefulTreeCache.stop() should be causing them to be deleted, and starting the cache shouldn't be  bringing over any state transfer.  Perhaps some file lock is preventing the node deletion?

-- 
This message is automatically generated by JIRA.
-
If you think it was sent incorrectly contact one of the administrators: http://jira.jboss.com/jira/secure/Administrators.jspa
-
For more information on JIRA, see: http://www.atlassian.com/software/jira