Dueling Dags Tracking Bug

[arv]

Dueling Dag (or DD) is described in details in this Google Doc

This task list is work in progress. It is far from complete and lacks a lot of details. I wanted to start listing tasks so that I can get the ball rolling:

• [ ] Slurp -- Take a dag::Read,dag::Write and a hash and copy the data
• [ ] SessionDB -- sdb is similar to db but it does not use Commit objects but
  • [ ] SessionRecord
  • [ ] ProfileRecord
  • [ ] startup()
  • [ ] activate()
  • [ ] deactivate()
• [ ] HuntZoombies
• [ ] Cleanup
• [ ] Adoption
  • [ ] BeginAdopt
  • [ ] MaybeEndAdopt
• [ ] Trimming