[jboss-jira] [JBoss JIRA] Created: (JBCACHE-957) Allow per-node configuration of LockParentForChildInsertRemove

[Brian Stansberry (JIRA)]

Allow per-node configuration of LockParentForChildInsertRemove
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                 Key: JBCACHE-957
                 URL: http://jira.jboss.com/jira/browse/JBCACHE-957
             Project: JBoss Cache
          Issue Type: Feature Request
      Security Level: Public (Everyone can see)
            Reporter: Brian Stansberry
         Assigned To: Manik Surtani
             Fix For: 2.0.0.BETA2


Use the new LockParentForChildInsertRemove as a global default that sets a per-node behavior.  Expose an API in Node (not NodeSPI) that allows the application to change the behavior for an individual node.

Use case: session replication, which stores data in a structure like this:

/SESSION/webapp/session1/.../...
/SESSION/webapp/session2/.../...

The session managment layer wants the greater correctness that comes with enforcing LockParentForChildInsertRemove="true" with the sessionX node and below.  But requiring a WL on /SESSION/webapp before any session could be added or removed will greatly disrupt session creation and expiration.  This feature allows the best of both worlds, by allowing the application to set LockParentForChildInsertRemove="false" on /SESSION and /SESSION/webapp.

This is a simple alternative to lock striping in the node's children map.

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