[Bucardo-general] validate_sync help

Banny Chu bannychu at gmail.com
Sun Mar 20 04:25:56 UTC 2011

Dear Rosser,
Thx so much, you are very kind!
I will try to set it up, thx for your help !

On Sun, Mar 20, 2011 at 6:18 AM, Rosser Schwarz <rosser.schwarz at gmail.com>wrote:

> On Sat, Mar 19, 2011 at 2:03 PM, Banny Chu <bannychu at gmail.com> wrote:
> > ... Table "public.definitions" must specify a way to handle conflicts ...
> > Please help me, Thx so much !
> In a swap sync, Bucardo needs to know how to handle conflicts between
> rows, where the same row is updated on both masters in a small enough
> window that it would otherwise need to replicate the changed rows in
> both directions.  Rather than guess, it wants you to specify which row
> should "win".  This is done using the "standard_conflict" column on
> the "bucardo.goat" table in the "bucardo" database.
> For tables, the valid values are "source", "target", "skip", "random",
> "latest", and "abort".  "latest" is usually what you want, though not
> always.  To specify which conflict resolution strategy Bucardo should
> use, you'll need to connect to your "bucardo" database and UPDATE the
> row for "definitions" in the "bucardo.goat" table.
> Note that, if you're going to have clients writing to both databases,
> and adding rows to your "definitions" table, you'll also need to take
> some special care with the sequence that populates your "id" column.
> The usual approach is to set the sequences to alternate, so that rows
> in the "test1" database get odd values, and rows in the "test2" db get
> even ones.  Look at the START and INCREMENT clauses for CREATE/ALTER
> SEQUENCE in the PostgreSQL docs for more information.  There's also an
> article about using sequences with Bucardo on the wiki at bucardo.org.
> Good luck!
> rls
> --
> :wq
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