anyone with PG Synchronous Replication knowledge, please help me with
your views on the below questions.
thanks,
Manoj
On 01/12/2012 10:12 AM, Manoj Govindassamy wrote:
any help on this is much appreciated.
thanks,
Manoj
On 01/11/2012 01:50 PM, Manoj Govindassamy wrote:
Hi,
I have a PG 9.1.2 Master <--> Slave with synchronous replication
setup. They are all working fine as expected. I do have a case where
I want to flip Master to non replication mode whenever its slave is
not responding. I have set replication_timeout to 5s and whenever
salve is not responding for for more than 5s, i see the master
detecting it. But, the transactions on the master is stuck till the
slave comes back. To get over it, I reloaded the config on master
with synchronous_commit = local. Further transactions on the master
are going thru fine with this local commits turned on.
Here are my questions:
1. Transaction which was stuck right when slave going away never went
thru even after I reloaded master's config with local commit on. I do
see all new transactions on master are going thru fine, except the
one which was stuck initially. How to get this stuck transaction
complete or return with error.
2. Whenever there is a problem with slave, I have to manually reload
master's config with local commit turned on to get master go forward.
Is there any automated way to reload this config with local commit on
on slave's unresponsiveness ? tcp connection timeouts, replication
timeouts all detect the failures, but i want to run some corrective
action on these failure detection.
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