[OSM-dev] Deleting TIGER node tags

[Andy Allan]

Hello Devs,

source = tiger_import_dch_v0.6_20070813
tiger:county = St. Louis, MO
tiger:tlid = 100111260:100111261:100111155:100111159
tiger:upload_uuid = bulk_upload.pl-6143e1a9-589d-43a0-9248-e95658773ef4

Stuff like this appears on every node in the US, which is a pain. I
reckon it's all pointless, since all that info is on the ways in the
first place, and it's worth deleting them. Here's some numbers from
Matt to consider:

Tiger node tags make up 85.43% of all node tags and take up:

    * 12.97% of the bzipped planet size (805Mb).
    * 34.68% of the uncompressed planet size.
    * 42.20% of the lines in the planet.
    * 31.51% of the parsing time of the planet (based on xmllint --stream).

So, can anyone think of a good reason to keep them? Should we just
delete tags like these? I'd love to hear if anyone think we should
keep them (bearing in mind all the info, including ids, would remain
on the ways in any case).

http://wiki.openstreetmap.org/wiki/TIGER_fixup/node_tags

Cheers,
Andy