[OSM-dev] osm2pgsql: diffs involving relations now work also

[Martijn van Oosterhout]

I've just committed the necessary changes to make diffs that change
ways properly reconstruct the relations that refer to it. That just
leaves the parking node problem which hasn't got a nice solution yet.
I don't expect it to be a problem in the short term though.

What this code needs now is lots of testing. To run this on a full
planet dump you will need on the order of 40GB of disk space, possibly
more (if anyone gets it to run to completion, could you post the disk
used, thanks). Note it will probably take quite a while unless you
have more than 1GB of memory and configure the --cache parameter to
use it. 10 hours is not unusual.

That said, testing can be done on a smaller scale. Pick two extract
from the same areas and use osmosis to make a diff. Load the first
file, then load the diff and compare it to the second file (somehow).

To all those people at SOTM drinking beer, have fun and see if you can
get some useful work done also! :)

Have a nice day,
-- 
Martijn van Oosterhout <kleptog at gmail.com> http://svana.org/kleptog/