[OSRM-talk] When does OSRM preprocessing generate new node IDs (custom map data)?

[eenuep at gmail.com]

Hi there,

I hope this is the right place to ask this question:

*_What I want to do:_*
I am using the OSRM map-matching engine on custom data.
To do this, I converted the data to an osm.xml file and import this data
into OSRM (preprocessing).

*_Unexpected behaviour:_*
I noticed, that OSRM uses new node IDs when the raw data contains very
large IDs.
To avoid this, I made sure the custom data only contains IDs up to 10
digits.

Now I am still seeing that for some nodes, new IDs are generated:
I.e. the IDs references in "annotation":{"nodes":[...] do not exist in the
raw osm.xml file.

*_My question:_*
Is there a way to find out, in which cases this happens and why?
*(e.g. some debug option which tells me "osm node id XXXX is too large /
duplicated, generating new ID")*

Best Regards,
Armin
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