[OSM-dev] Osmium - "Corruption" when writing PBF

[Pris Matic]

Hi all,

I'm trying to use Osmium to read in OSM data from *.osm.pbf files, add
certain tag data and then write it out again to *.osm.pbf. I'm able to do
this with smaller files, (city level), but when I try to do state/provincial
level I run into 'corruption', where the tag data becomes completely mixed
up and unusable. It's a strange problem -- the tag keys and values are
'preserved', but they are all mixed, seemingly at random.

Here is an example:

way:
  id=7948229
  version=1
  uid=5168
  user=|43.637614,-79.424110|
  changeset=505735
  timestamp=2007-09-23T19:11:20Z
  tags:
    k=|43.208074,-80.002507| v=|Book Road|
    k=|43.402130| v=|43.191320,-79.935827|
    k=|43.398032,-79.793599| v=|43.191382,-79.935896|
    k=|43.398144,-79.792577| v=|43.191420,-79.936025|
    k=|43.398410,-79.791691| v=|43.191414,-79.936282|
    k=|43.670969,-79.295439| v=|-79.936007|
    k=|43.670595,-79.295294| v=|43.191384|
  node_count=4
  nodes:
    ref=59222301
    ref=59222588
    ref=59222589
    ref=59222590

I'm saving node geometry data for certain ways. Here's an example of what
the key/value pairs look like when they are correct:

way:
  id=75168646
  version=1
  uid=5640
  user=|MikeyCarter|
  changeset=5631822
  timestamp=2010-08-29T23:21:59Z
  tags:
    k=|my_startaddr| v=|724|
    k=|my_street| v=|City Road|
    k=|0| v=|48.354900,-89.284862|
    k=|1| v=|48.356371,-89.279541|
    k=|2| v=|48.356387,-89.279429|
    k=|my_endaddr| v=|700|
    k=|3| v=|48.356431,-89.277626|
    k=|avg_lon| v=|-89.280365|
    k=|avg_lat| v=|48.356022|
  node_count=4
  nodes:
    ref=886971214
    ref=887071818
    ref=886990640
    ref=887031646

However, at some point in the process, they will turn 'random' and become
garbage. I've been stuck on this issue for awhile, and I'd appreciate any
advice.

-Pris
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