Re: Exposing the Xact commit order to the user

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Jan Wieck
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Re: Exposing the Xact commit order to the user
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в 08:07:49
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4BFD0115.7010403@Yahoo.com
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Re: Exposing the Xact commit order to the user Chris Browne <cbbrowne@acm.org>
On 5/26/2010 7:03 AM, Jan Wieck wrote:
> To replicate from one consistent state to the next, the replication 
> system now selects all log rows between two snapshots. Between here 
> means it simulates MVCC visibility in the sense of that the writing 
> transaction was in progress when the first snapshot was taken and had 
> committed at the second. The resulting WHERE clause looks something like

Or it entirely happened between the snapshots, obviously.


Jan

-- 
Anyone who trades liberty for security deserves neither
liberty nor security. -- Benjamin Franklin

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