[OSM-dev] osm2pgsql deltas
Steve Hill
steve at nexusuk.org
Mon Jan 18 09:45:59 GMT 2010
On Mon, 18 Jan 2010, Brett Henderson wrote:
> While the old date based names were easy to identify, unfortunately they
> don't work with replication files which are only approximately aligned with
> timestamps. Initialising the replication is a little annoying due to the
> disconnect between timestamp and sequence number, but as Frederik points out
> from that point on the replication mechanism is simpler.
With the old system, I used the daily deltas if my database was lagging a
day or more behind, hourly deltas if I was more than an hour behind and
minutely deltas under normal operation. As I understand it, this is no
longer possible and I'll end up having to use minutely deltas all the
time. It seems that this new system is going to make the already very
time-intensive process of applying deltas even less efficient... Or have
I misunderstood how this works?
--
- Steve
xmpp:steve at nexusuk.org sip:steve at nexusuk.org http://www.nexusuk.org/
Servatis a periculum, servatis a maleficum - Whisper, Evanescence
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