[OSM-dev] Timestamp in PBF files

[Dennis Luxen]

> As for the timestamp =18 field, Dennis, what was your intended use
> of this field?  Marqqs, what is the intended use of your timestamp 
> optional_features field?
> 
> By this, I mean, what semantics are you attaching to these
> timestamps. I think its perfectly reasonable to have several
> timestamp fields, perhaps: The timestamp the file was generated. The
> state needed to resume replication of an extract/planet (which 
> contains an internal timestamp)? The timestamp of the when the file
> was extracted/excerpted?

The main purpose was to store the replication state.

--Dennis

> If you two could give me a better idea of what your timestamps are
> used for, I could advise on how we can try to integrate them into one
> or more standard timestamp fields. And after that, we can then figure
> out how we might want to assign timestamps to field names/ids ---
> keeping in mind prior uses of those field names and numbers.
>