[Tagging] Extremely long Amtrak route relations / coastline v. water

[Simon Poole]

Am 22.11.2020 um 17:35 schrieb Brian M. Sperlongano:
> ..
>
> I like the idea of an api limit, though we would need a strategy to 
> deal with existing large objects.
> ..

This is, "surprise", not a new topic. There are certain issues with the 
semantics of relations which make this slightly more involved as the 
maximum node limit on ways.

See

- https://github.com/openstreetmap/openstreetmap-website/issues/1711

- https://github.com/zerebubuth/openstreetmap-cgimap/pull/174

With the later giving some insights in to why simply declaring a limit 
is not a good idea. But putting a bound in place and expecting all tools 
to be handle relations up to that size (just as we currently do with 
ways) would be a good thing to improve robustness of the whole system.

Simon

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