[OSM-talk] Something Might be Broken

[Karl Newman]

On Thu, Jul 30, 2009 at 7:29 PM, Andrew Ayre <andy at britishideas.com> wrote:

> Take a look at this boundary where a forest and national park meet:
>
>   http://osm.org/go/TwUljNo--
>
> Notice that the boundaries don't line up. This is because the national
> park is in slightly the wrong place. The national park is this changeset
> uploaded yesterday:
>
>   http://www.openstreetmap.org/browse/changeset/1980439
>
> Today I moved the national park into the correct position. The changeset
> was closed at 31 Jul 00:09:
>
>   http://www.openstreetmap.org/browse/changeset/1989864
>
> I then marked the tile you are looking at as dirty. It was apparently
> rendered by Mapnik on 31 Jul 03:21:
>
>   http://a.tile.openstreetmap.org/12/772/1608.png/status
>
> As you can see the data from my new changeset has not been used.
>
> On 31 Jul 01:33 I added a new changeset with some trails:
>
>   http://www.openstreetmap.org/browse/changeset/1990063
>
> This was rendered with trails at 31 Jul 03:13:
>
>   http://a.tile.openstreetmap.org/13/1567/3318.png/status
>
> If data I uploaded at 01:33 was rendered at 3:13, how come data I
> uploaded at 00:09 has not been rendered at the time of writing this?
> (03:21)?
>
> One clue might be that the trails are new data but the movement of nodes
> was not. Also JOSM gave me an error of "unexpected end of file" when the
> changeset was closing, but the changeset is listed in my edits as being
> closed anyway. It also has all 23573 nodes.
>
> I have cleared my browser cache and tried two browsers.
>
> I have two other examples of different data/changesets that I just
> cannot get Mapnik to render it. In both cases some of the data is
> rendered. One of those I've asked for help on here and the Mapnik list
> with no solution. I've tried everything I can think of.
>
> I don't know what the Osmarender update speed is or how to mark tiles as
> dirty or find out when they were rendered, so I am unsure if Osmarender
> tiles can be directly compared.
>
> Any help is greatly appreciated, otherwise I am losing confidence.
>
> Andy
>
>
If the boundary is a relation, that may be the reason. (Since you said it
has 23573 nodes, then it must be a boundary relation.) AFAIK, Mapnik (or
more properly, osm2pgsql) currently doesn't process relations for diffs.
You'll have to wait until the planet reload after next Wed to see the border
update.

Karl
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