FRM Reconciliation (Synchronization, Mark&Sweep)

Features needed:

• Barrier between dependent Groups (Select Groups, FF Groups)
• Barrier between Groups and Flows programming
• Mark&Sweep reconciliation needed (instead of Switch wipeout)
• Add new (new Flows/Groups with IDs that do not exist in Inventory Operational Store)
• Update existing (existing IDs in both Inventory CONFIG and OPERATIONAL)
• Remove old (old Flows/Groups with IDs that exist in Inventory Operational Store but not in Inventory Config)
• Do not change order of instructions that needs to be programmed to Switches (parallel write to Inventory CONFIG and Switch reconnections) - synchronization needed.

These features are needed in specific Controller based on Beryllium. We assume that it is possible to used Beryllium Controller with newer version of OpenFlow Plugin (hybrid Karaf ZIP). This feature should be back-ported later in Service Release 1 of stable/Beryllium.