yaxing/ads_con_ctrl — Issue #4: ReadOnly transaction & Snapshots
Author: yaxing
Created: 2011-12-01 16:34:49+00:00
State: open

I think we might need to add one command for ourselves for snapshots taking. Maybe call it SNAPSHOT (we can talk about this today).

Here's how it should work from my perspective:

At the time a RO transaction begins, TM should send SNAPSHOT command with timestamp to all sites, let all of them take a snapshot for current status with this RO's timestamp. In this way RO transactions can read from certain snapshots later.

What do you think?