Re: Big 7.4 items

Okay. But please keep in mind that a 2-phase commit implementation is used for more than just replication. Any
distributedTX will require a 2PC protocol. As an example, for the DBLINK implementation to ultimately be transaction
safe(at least amongst multiple PostgreSQL installations), the players in the distributed transaction must all be
participantsin a 2PC exchange. And a participant whose communications link is dropped needs to be able to recover by
askingthe coordinator whether or not to complete or abort the distributed TX. I am 100% ignorant of the distributed TX
standardTom referenced earlier, but I'd guess there might be an assumption of 2PC support in the implementation. In
otherwords, I think we still need 2PC, regardless of the method of replication. And if  Satoshi Nagayasu has an
implementationready, why not investigate its possibilities? 

Mike Mascari
mascarm@mascari.com

----- Original Message -----
From: "Bruce Momjian" <pgman@candle.pha.pa.us>


> Mike Mascari wrote:
> > What about distributed TX support:

> OK, yes, that is Satoshi's 2-phase commit implementation.  I will
> address 2-phase commit vs Postgres-R in my next email about spread.