[OSM-dev] Missing ways on XAPI

[80n]

There's a problem with the minute diffs, since 0.6, caused by large
changesets.  The workaround is to delay them by 30 minutes, but it's
possible there was missing data before the problem was fully diagnosed.

It's a bit of a moot problem at the moment as the main XAPI server is dead.
Any new servers that come up (some are being worked on) will start with a
clean planet so things should be much better.

Once we have some healthy XAPI servers running it would be worth checking
that there isn't some other latent problem, but not much point until then.

80n

On Thu, Jun 18, 2009 at 4:35 PM, Steve Hosgood <steve at tallyho.bc.nu> wrote:

> I was driving across Swansea, South Wales, UK (my home town) with my
> in-car Garmin GPS unit telling me the way using home-made maps courtesy
> of OSM (for the data) and mkgmap (for making the Garmin maps).
>
> Suddenly I ran out of road. Several km of urban dual carriageway was
> missing. This was way 4686568 (Northbound) and way 23612325 (Southbound).
>
> It's all there on OSM, and has been for ages. What's happening is that
> XAPI seems just not to include those ways in the extract of the planet
> that it gives me. I'm using bounding-box "-4.350,51.363,-3.208,51.705"
> which should be plenty enough to contain those ways. Indeed - there's
> plenty of navigable map visible all around the missing section.
>
> I've found more missing ways since, but can't find any pattern to it.
> For instance, way 4686515 is just a short bit of 'residential'
> surrounded by more of the same. The surroundings are there, that one
> road isn't.
>
> The only obvious things in common are that all missing ways I've seen
> are one-way streets. Also, all these ways are toward the northern end of
> the bounding-box (but well within it). This is off my normal
> drive-to-work and I've only just noticed. But I've kept my raw XAPI
> files since the start of May and those roads have been missing in all of
> them. So it's not a new bug in XAPI.
>
> Anyone got any ideas what's happening here please?
> Steve
>
>
>
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