Since I have been playing with changeset metadata[1] a bit, Paul Norman recently pointed out to me that there are now minutely diffs of changesets available from planet.osm [2]. Would anyone care to share some juicy details like where it came from and how it works? Apparently it was mentioned in an EWG meeting. I should really check one of those out...
Anyway, some observations/questions: I see the state file is in a different format than all the other replication state files. Probably not a big deal but is there value in consistency? Are there any existing tools to use this stream? It looks like changesets don't show up until they are closed. This makes sense since then you don't have to worry about information changing. However, what will it do in the edge case where a changeset is closed but then reopened? Not possible you say? I once had an upload take over an hour to process. It did eventually succeed but the changeset was marked as closed in my changeset list for several minutes before the upload finished and then it was suddenly open again. I am assuming in this case the changeset would show up twice in the minutely diffs and cause the INSERT queries of all consumers to explode violently :) [1] https://github.com/ToeBee/ChangesetMD [2] http://planet.openstreetmap.org/replication/changesets/ Toby _______________________________________________ dev mailing list [email protected] http://lists.openstreetmap.org/listinfo/dev
