Juniper/contrail-controller — pull request #570 by meghb (2014-04-09 21:16:23+00:00)
Title: 1. Generator database timer creation/deletion is done from

generator connect session, disconnect session, database error
handler. These can happen concurrently, synchronize by taking
per generator mutex.
2. Generator db handler init, shutdown, and dequeue can happen
concurrently. Enqueue a task to perform the init and ensure
that these do not happen concurrently.
3. Cdb if now supports only_sync option that is used by
query engine and when used does not create the cdbq.