[Tilesathome] XAPI missing nodes

[80n]

Michael
Thank you for identifying this issue.

There is indeed a problem.  I think I have located the cause and I'm working
on a fix.

80n

On Sat, Nov 15, 2008 at 3:07 PM, Michael Ritzert <
michael.ritzert at googlemail.com> wrote:

> Hi all,
>
> (at least) the hypercube XAPI server seems to be missing nodes.
>
> $ wget '
> http://osmxapi.hypercube.telascience.org/api/0.5/*[bbox=8.4571,49.4855,8.4607,49.4873]<http://osmxapi.hypercube.telascience.org/api/0.5/*%5Bbbox=8.4571,49.4855,8.4607,49.4873%5D>'
> -O MA1.osm
> $ wget '
> http://www.openstreetmap.org/api/0.5/map?bbox=8.4571,49.4855,8.4607,49.4873'
> -O MA2.osm
> $ grep '<node id' MA1.osm | wc -l
> 55
> $ grep '<node id' MA2.osm | wc -l
> 111
> $ grep 249819997 MA[12].osm
> MA2.osm:  <node id="249819997" lat="49.4866651" lon="8.4581842"
> user="[HEK]the_other" visible="true" timestamp="2008-03-01T17:08:25+00:00">
> MA2.osm:    <nd ref="249819997"/>
> MA2.osm:    <nd ref="249819997"/>
> $ grep '<way id' MA1.osm | wc -l
> 12
> $ grep '<way id' MA2.osm | wc -l
> 21
>
> When I checked to see how many nodes where added today, I found that only
> two of three nodes updated during the same second today made it to the XAPI:
>
> $ grep 2008-11-15 /tmp/MA*
> /tmp/MA1.osm:  <node id='30391456' lat='49.4872431' lon='8.4599382'
> timestamp='2008-11-15T14:24:47Z'>
> /tmp/MA1.osm:  <node id='30391457' lat='49.4869184' lon='8.4596203'
> timestamp='2008-11-15T14:24:47Z'>
> /tmp/MA2.osm:  <node id="30391456" lat="49.4872431" lon="8.4599382"
> visible="true" timestamp="2008-11-15T14:24:47+00:00">
> /tmp/MA2.osm:  <node id="30391457" lat="49.4869184" lon="8.4596203"
> visible="true" timestamp="2008-11-15T14:24:47+00:00">
> /tmp/MA2.osm:  <node id="30391455" lat="49.4876508" lon="8.4589878"
> visible="true" timestamp="2008-11-15T14:24:47+00:00">
>
> Note that 30391455 is missing from the XAPI (MA1) data. From the node ids,
> one should guess that they have been created within a second, also. When I
> tried to verify this, I found that the creation of the missing node also
> hasn't been recorded in the main history:
> http://www.openstreetmap.org/browse/node/30391455/history
> The other's are OK:
> http://www.openstreetmap.org/browse/node/30391456/history
> Maybe that's starting point for debugging this.
>
> I noticed this in other areas, too.
> More extensive research revealed three "recent" periods of time where
> timestamps of missing nodes accumulated:
> On 2008-09-21, 2008-09-23, 2008-11-02.
> Of course this data is only representative for the small area I checked.
>
> Michael
>
>
>
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