[jboss-jira] [JBoss JIRA] Closed: (JBCACHE-961) Optimistic locking to support more sophisticated merging of child maps
Manik Surtani (JIRA)
jira-events at lists.jboss.org
Wed Mar 7 17:07:39 EST 2007
[ http://jira.jboss.com/jira/browse/JBCACHE-961?page=all ]
Manik Surtani closed JBCACHE-961.
---------------------------------
Fix Version/s: 1.4.1.SP3
Resolution: Done
backported to 1.4.1.SP3
> Optimistic locking to support more sophisticated merging of child maps
> ----------------------------------------------------------------------
>
> Key: JBCACHE-961
> URL: http://jira.jboss.com/jira/browse/JBCACHE-961
> Project: JBoss Cache
> Issue Type: Feature Request
> Security Level: Public(Everyone can see)
> Affects Versions: 1.4.1.GA
> Reporter: Manik Surtani
> Assigned To: Manik Surtani
> Fix For: 2.0.0.BETA2, 2.0.0.GA, 1.4.1.SP3
>
>
> At the moment at commit time parent nodes in a workspace have their child maps used to overwrite the underlying data nodes. As such, version increments are necessary on the parents, very bad for concurrency.
> A more sophisticated merging mechanism is needed here, perhaps along the lines of:
> 1) Children added placed in an addedChildren map
> 2) Children removed placed in a childrenRemoved map
> at commit time, use these 2 maps to look at what exists in the underlying node and merge in accordingly.
> Related to JBCACHE-955 and JBCACHE-956.
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