I'm curious what the recommended best practice is for migrating a
production environment with replication from 0.7 to 0.8 given the protocol
upgrade. Some specific questions I have are:

a) Is it possible to mix 0.7 and 0.8 servers for a given partition during
the migration?

b) If we can't mix server versions, how do we do a zero-downtime upgrade?

c) Will 0.7 clients continue to communicate correctly on-the-wire with the
0.8 server until they can be upgraded?


Any war stories of production upgrades would be helpful. Thanks in advance.
- Clark

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