[OSM-talk] server migration update / license change
Update from Richard F Original http://blog.osmfoundation.org/2012/04/05/license-change-update-getting-it-right/ License change update: getting it right Posted on April 5, 2012 by RichardF With the new server successfully installed by our sysadmin team, we’re now onto the second part of our migration – the data ‘redaction’ work required to move to the Open Database License. We promised our first progress report next week, but lots of people have been asking, so here’s an update four days early. The code changes to the OpenStreetMap API have been completed and successfully reviewed. openstreetmap.org is therefore ready to distribute the new data. (Thanks to Matt Amos for the code and Tom Hughes for the review work.) The next part is the ‘redaction bot’. This is the piece of code that, for an area of OpenStreetMap data, goes through and redacts (removes/hides) any data that isn’t compatible with the new licence. This is the most crucial part of the whole process: we aim not to retain data whose creators haven’t given permission for it to be distributed under the Open Database License, and conversely, not to inadvertently delete anything from the vast majority which is compatible. Since Wednesday we’ve been running tests against real-world data (thanks to Frederik Ramm for help with this). We’re not yet 100% happy with the results, so we are continuing to work on the code. As you would expect, we will not set the bot running until we are absolutely confident that it is producing accurate results. With the four-day Easter weekend just beginning, we currently expect that this will be next week. This puts us a few days behind schedule, but we owe it to our mappers to get this right. If you’re a developer, you can help fix the currently failing tests: check out the code at https://github.com/zerebubuth/openstreetmap-license-change. If you’re a mapper, this gives you a few more days to get your area shipshape! And if you’re a data consumer, you can, of course, continue to use the data under our existing license, CC-BY-SA 2.0. We’ll have a further update next week and, in any case, before the bot starts running. ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
Re: [OSM-talk] server migration update / license change
Thanks a lot for the Update, Richard. It is much appreciated that the information flow works. I have a question with regards to the map at osm.org. When the database is clean, it would also need a re-rendering of all tiles in cache to finalise the license change. I know that this takes a lot time, IO, CPU time etc. and can be a questions of days or even a week, depending on the hardware. Is there any expected downtime of the map at osm.org? Or will it be done in the background so that the map on osm.org will remain a while ccbysa after the license of the database changed to ensure that map will always available? -- View this message in context: http://gis.19327.n5.nabble.com/server-migration-update-license-change-tp5620977p5621188.html Sent from the General Discussion mailing list archive at Nabble.com. ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
Re: [OSM-talk] server migration update / license change
On Thu, Apr 5, 2012 at 2:49 PM, ThomasB toba0...@yahoo.de wrote: Thanks a lot for the Update, Richard. It is much appreciated that the information flow works. I have a question with regards to the map at osm.org. When the database is clean, it would also need a re-rendering of all tiles in cache to finalise the license change. Hi Thomas, There is no requirement that tiles from osm.org be purged or relicensed when the data base is published as ODbL. ODbL permits Produced Works like png tiles to be licensed $notODbL, provided that the ODbL obligations are met. I expect that the map tiles at osm.org will stay CC-By-SA, as they are a Produced Work, and have a creative aspect. This simplifies several things, including, no need to purge all the tiles at once, and no need to have all tile consumers update their copyright information. That's not to say that OSM tiles will forever be served as CC-By-SA. That also does not preclude creating and serving tile sets under other licenses. ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
Re: [OSM-talk] server migration update / license change
From: Richard Weait [mailto:rich...@weait.com] Subject: Re: [OSM-talk] server migration update / license change On Thu, Apr 5, 2012 at 2:49 PM, ThomasB toba0...@yahoo.de wrote: Thanks a lot for the Update, Richard. It is much appreciated that the information flow works. I have a question with regards to the map at osm.org. When the database is clean, it would also need a re-rendering of all tiles in cache to finalise the license change. Hi Thomas, There is no requirement that tiles from osm.org be purged or relicensed when the data base is published as ODbL. ODbL permits Produced Works like png tiles to be licensed $notODbL, provided that the ODbL obligations are met. I expect that the map tiles at osm.org will stay CC-By-SA, as they are a Produced Work, and have a creative aspect. This simplifies several things, including, no need to purge all the tiles at once, and no need to have all tile consumers update their copyright information. That's not to say that OSM tiles will forever be served as CC-By-SA. That also does not preclude creating and serving tile sets under other licenses. If the tiles are not regenerated then they will contain elements that are licensed as cc by-sa only. If you mix cc by-sa data with other data, doesn't this mean that the entire work is only available as cc by-sa? ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
Re: [OSM-talk] server migration update / license change
On Thu, Apr 5, 2012 at 4:07 PM, Paul Norman penor...@mac.com wrote: If the tiles are not regenerated then they will contain elements that are licensed as cc by-sa only. Old tiles, the tiles generated at osm.org right now, are created from a CC-By-SA data base and are CC-By-SA tiles. No problem. If you mix cc by-sa data with other data, doesn't this mean that the entire work is only available as cc by-sa? No. You can, and some have, published All Rights Reserved © books with CC-By-SA OSM map images included. No problem there. In the case of osm.org tiles, there is even less of a problem. 1) Old tiles, the current ones, are ccbysa from a ccbysa data base. That's fine. 2) Future tiles, after the license switch is thrown, will be ccbysa from an ODbL data base. That's fine. 3) The Collective Work [1] of old tiles and future tiles in the OpenLayers frame on osm.org will also be CC-By-SA. So I don't see where there would be a licensing concern. There IS a mapper concern. We'd like to keep the tiles fresh, wouldn't we? So updating cached tiles after any update is something that we all like to see. But I don't see a licensing concern here. :-) [1] term from CC-By-SA for combining separate works. In this case, each tile is a separate work. ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
Re: [OSM-talk] server migration update / license change
Paul Norman wrote If the tiles are not regenerated then they will contain elements that are licensed as cc by-sa only. Thank you Paul, that was my point. Low zoom tiles are generated not too often, sometimes less than each month. Other tiles are generated more often but not daily. So these tiles would show content, that does not exist anymore. The tiles can still be published under ccbysa but it would be bit strange and confusing for (re)mappers if the map of osm.org differs from the database. -- View this message in context: http://gis.19327.n5.nabble.com/server-migration-update-license-change-tp5620977p5621435.html Sent from the General Discussion mailing list archive at Nabble.com. ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
Re: [OSM-talk] server migration update / license change
From: Richard Weait [mailto:rich...@weait.com] Subject: Re: [OSM-talk] server migration update / license change On Thu, Apr 5, 2012 at 4:07 PM, Paul Norman penor...@mac.com wrote: If the tiles are not regenerated then they will contain elements that are licensed as cc by-sa only. Old tiles, the tiles generated at osm.org right now, are created from a CC-By-SA data base and are CC-By-SA tiles. No problem. If you mix cc by-sa data with other data, doesn't this mean that the entire work is only available as cc by-sa? No. You can, and some have, published All Rights Reserved C books with CC-By-SA OSM map images included. No problem there. In the case of osm.org tiles, there is even less of a problem. 1) Old tiles, the current ones, are ccbysa from a ccbysa data base. That's fine. 2) Future tiles, after the license switch is thrown, will be ccbysa from an ODbL data base. That's fine. 3) The Collective Work [1] of old tiles and future tiles in the OpenLayers frame on osm.org will also be CC-By-SA. So I don't see where there would be a licensing concern. There IS a mapper concern. We'd like to keep the tiles fresh, wouldn't we? So updating cached tiles after any update is something that we all like to see. But I don't see a licensing concern here. :-) [1] term from CC-By-SA for combining separate works. In this case, each tile is a separate work. If you start having some tiles where the produced work is CC by-sa with the underlying data also cc by-sa and some where the produced work is cc by-sa with the underlying data ODbL, how do you do attribution for each tile differently? ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
Re: [OSM-talk] server migration update / license change
On Thu, Apr 5, 2012 at 7:57 PM, Paul Norman penor...@mac.com wrote: If you start having some tiles where the produced work is CC by-sa with the underlying data also cc by-sa and some where the produced work is cc by-sa with the underlying data ODbL, how do you do attribution for each tile differently? Interesting. :-) We don't currently distinguish between attributing tiles made today and tiles made last week. One could visit OSM.org today and see artefacts from data not currently present in OSM data. 'Coastline flooding' comes to mind but there will be other cases as well. Shall we continue this on legal-talk? ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
