Adding tables to replication and managing problems

Once we have added this table to the system, we can add it to the replication setup. However, doing so is a little complex. First of all, we have to create a new table set and merge it with the one we already have. Burcado and Londiste are a bit more convenient here and DDLs are easier. So, for a brief moment, we will have two table sets involved. The script goes like this:

#!/bin/sh

MASTERDB=db1
SLAVEDB=db2
HOST1=localhost
HOST2=localhost
DBUSER=hs

slonik<<_EOF_
cluster name = first_cluster;

node 1 admin conninfo = 'dbname=$MASTERDB host=$HOST1 user=$DBUSER';
node 2 admin conninfo = 'dbname=$SLAVEDB host=$HOST2 user=$DBUSER';

create set (id=2, origin=1,
comment='a second replication set');
set add table (set id=2, origin=1, id=5,
fully qualified name = 'public.t_second',
  comment='second table');
subscribe set(id=1, provider=1,receiver=2);
merge set(id=1, add id=2,origin=1);
_EOF_

The key to our success is the merge call at the...