[Bucardo-general] could not serialize access due to read/write
tronix.ak at gmail.com
Thu May 31 18:43:07 UTC 2012
> In other words, it's an artifact of the way Bucardo tries to
> be safe with your data and can be ignored if it only happens
There are 500 to 1000 errors each day.
All those errors concern to
INSERT INTO bucardo.bucardo_track (txntime,targetdb,tablename)
SELECT DISTINCT txntime, 'node2'::text, 17640::oid FROM bucardo.bucardo_delta d
WHERE d.tablename = 17640::oid AND NOT EXISTS (
SELECT 1 FROM bucardo.bucardo_track t WHERE d.txntime = t.txntime
AND t.targetdb = 'node2'::text AND t.tablename = 17640::oid);
with different tables OIDs
> Those are the new serialization errors.
Yes, it is new type of serialization error, but I wonder if something
can be changed into bucardo code...
1) Is it a good idea to upgrade bucardo to new 4.99.x ?
2) Is it a good idea to add everything into only one sync.... ? as far
I understand the basis of this bucardo error, it is a competition
between concurrent transactions of bucardo itself.
3) Is it a good idea to rewrite this statement "INSERT INTO
bucardo.bucardo_track ..." to locks less rows ?
4) Is it a good idea to reexecute this statement "INSERT INTO
bucardo.bucardo_track ..." if such error occur ?
What else, can someone suggests to do, to get rid of this type of errors... ?
Before upgrading master node to 9.1.3, there were no errors.
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