[OSM-talk] Identical Duplicate buildings

[Mike Thompson]

On Fri, Jan 29, 2021 at 1:58 AM mmd <mmd.osm at gmail.com> wrote:

>
>
> A few remarks:
>
> Unlike JOSM, iD doesn't update local negative ids with new real object
> ids it receives from the API, and simply starts a new session by loading
> all data from the API again.
>
> As this could result in reading some outdated data, iD introduced two
> extra delays of 2.5s each to cater for potential database replication
> delays (mostly for historic reasons).
>
> If a user were to close a browser tab while the upload popup is still
> showing up, chances are that the upload already finished. Still iD
> updates its local storage rather late to mark the upload as successful.
> Next time iD gets opened, the user can choose to either keep or discard
> previous changes, which introduces a way for duplicate uploads.
>
> Furthermore, duplicate uploads could be avoided by a mechanism called
> "idempotent uploads". As there was no consensus on implementation
> details, this feature isn't available at this time.
>
> The changeset upload endpoint supports compressed uploads. Due to the ~
> 8x compression of XML data, working even on 2G mobile networks becomes
> feasible. As of today, few  mobile editors like Go Map!! support
> compressed uploads.
>
> Changeset uploads are no longer handled by the Rails port since about
> mid-2019.
>
Thanks for the clarifications and corrections.


Mike
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