On 2/08/2011 3:52 AM, Greg Smith wrote:
On 08/01/2011 09:29 AM, Anibal David Acosta wrote:
Can a transaction committed
asynchronously
report an error, duplicate key or something like that,
causing a client
with a OK transaction but server with a FAILED transaction.
No. You are turning off the wait for the transaction to hit disk
before returning to the client, but all the validation checks are
done
before that. The sole risk with synchronous_commit off is that a
client will get COMMIT, but the server will lose the transaction
completely--when there's a crash before it's written to disk.
What about an I/O error during write, or other HW-level issues that
might cause a transaction to fail to commit while others proceed
fine?
--
Craig Ringer
POST Newspapers
276 Onslow Rd, Shenton Park
Ph: 08 9381 3088 Fax: 08 9388 2258
ABN: 50 008 917 717
http://www.postnewspapers.com.au/
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