You signed in with another tab or window. Reload to refresh your session.You signed out in another tab or window. Reload to refresh your session.You switched accounts on another tab or window. Reload to refresh your session.Dismiss alert
{{ message }}
This repository has been archived by the owner on Jul 24, 2021. It is now read-only.
Reporter: avarab[at]gmail.com [Submitted to the original trac issue database at 1.19pm, Sunday, 22nd November 2009]
Potlatch has a data corrupting bug since the Tidy function was introduced that is triggeder in some limited circumstances, see [http://lists.openstreetmap.org/pipermail/dev/2009-November/017751.html this E-Mail for details].
[http://www.openstreetmap.org/browse/way/4794092 Here's an example] of a corrupt way, copy attached to the bug for reference.
Here's an IRC discussion for reference where I originally brought this up.
367772:23:37 < avar> RichardF: \o/ I broke it
367773:23:38 * RichardF applauds
367774:23:38 < RichardF> what'd you do?
367778:23:38 < RichardF> zereb: yeah, I wish people wouldn't do that
367780:23:38 < avar> create a square, then tidy points to make a circle, then reverse ways and tidy points again
367781:23:38 < avar> you'll end up with a crapload of points which seem to duplicate the circle, but I'm not sure since it's impossible to see what's going on with your data in potlatch :)
367783:23:39 < avar> can I move a whole way in it?
367785:23:39 < RichardF> avar: hm, worksforme?
367786:23:39 < RichardF> avar: move a whole way? sure, just click, hold and drag
367793:23:44 < avar> RichardF: when I create a 4 node square and then make a circle, then reverse and make a circle again I get:
367794:23:44 < avar> [I would have pasted an error message by now if flash didn't suck ass and copy-paste actually worked from it]
367795:23:44 < avar> "Precondition failed: Way 38231 requires the nodes with id in (-25,-24,-23,-22,-21,-20,-19,-18,-17,-16,-15,-14,-13,-12,-11,-10,-9,-8,-7), which either do not exist, or are not visible."
367796:23:45 < avar> on api06
367797:23:45 < avar> http://api06.dev.openstreetmap.org/browse/way/38231
367798:23:46 < avar> that circle looks circular in my Potlatch view b.t.w. so it looks like the algorithm is broken, or the save went through partially and broke stuff
367800:23:46 < RichardF> right, I'll have a look
367801:23:47 < avar> and now it says I have unsaved changes but when I click save "nothing to upload"
367802:23:47 < avar> oh now the rendering looks broken in potlatch when I open it again
367805:23:49 < RichardF> avar: have you tried it on the live site or just api06?
367807:23:50 < avar> tried it there too, it looks the same in the potlatch view on the main site but I'm not going to save crap to the main db :)
367808:23:51 < RichardF> well, if I do (either on my dev machine or the main site): four-node way, T, reverse, T, save, it seems happy
367809:23:51 < RichardF> are you doing a different sequence of things?
367810:23:52 < avar> four-node area, then make circle, then reverse, then make circle
367811:23:52 < RichardF> live or with save?
367812:23:52 < avar> with save
367813:23:53 < RichardF> have you got a password for api06 I can use?
367814:23:53 < shaunmcdonald> RichardF: you create a new account!
367815:23:53 < avar> I can't seem to save the "then reverse, then make circle" version on api06, it hangs on "Uploading ways" even though according to tcpflow there has been no TCP network traffic between my machine and openstreetmap.org since I did that
367816:23:54 < avar> RichardF: avarab[at]gmail.com / XH4OPPJF
367817:23:54 < avar> (sudo tcpflow -i wlan0 -c host openstreetmap.org)
367819:23:55 < RichardF> hrm
367820:23:55 < RichardF> still worksforme too
367821:23:55 < RichardF> avar: are you saving at any point on the interim, or just at the end?
367824:23:58 < avar> 1. open PL 2. edit with save 3. make 4 node area 5. T 6. reverse direction 7. T 8. save 9. http://api06.dev.openstreetmap.org/?way=38235
367825:23:58 < avar> I saved after 5. earlier and couldn't save at 8 after that
367827:00:00 < avar> save at 7 i mean
367828:00:00 < RichardF> beyond weird, still worksforme
367829:00:00 < RichardF> wonder if it's a Linux FP thing
367830:00:01 < avar> Step 8 resulted in a circle that looks like it has 2x as many nodes as step 5 and it looks like it repeat itself so it goes round and round through each node 4x times
367834:00:04 < avar> when you make a circle are two nodes on it much closer to each other than the other ones?
367835:00:04 < avar> the nodes aren't evenly spaced when I do it
367837:00:05 < RichardF> yeah, basically it preserves existing nodes but then adds a load to make a circle
367847:00:30 -!- RichardF [~richard[at]systemed.plus.com] has quit [Quit: RichardF]
The text was updated successfully, but these errors were encountered:
Reporter: avarab[at]gmail.com
[Submitted to the original trac issue database at 1.19pm, Sunday, 22nd November 2009]
Potlatch has a data corrupting bug since the Tidy function was introduced that is triggeder in some limited circumstances, see [http://lists.openstreetmap.org/pipermail/dev/2009-November/017751.html this E-Mail for details].
[http://www.openstreetmap.org/browse/way/4794092 Here's an example] of a corrupt way, copy attached to the bug for reference.
Here's an IRC discussion for reference where I originally brought this up.
The text was updated successfully, but these errors were encountered: