[OSM-talk] JOSM max upload changeset size

[Shaun McDonald]

On 24 May 2009, at 20:02, Sam Vekemans wrote:

> Hi,
> I'm wondering what the max size per edit session that JOSM can  
> handle is?
> Whats the standard rule? Every 10mins? Or will josm accept any size,
> it would just take longer?
> What is a happy back-end servers size, that doesnt bog it down?
>

There is a maximum of 50,000 items in each changeset. It really  
depends on the complexity  of the changeset. If it is just node and  
way changes it will be a lot quicker than large relations. It is also  
dependant on the number of other editors in your area. So if you have  
many people in the area editing at the same time, then it is much  
better to upload more often.

> Is there a max default/timeout that JOSM squaks at?
> Could JOSM check for area edits before upload starts?
>

File > Update Data, however you currently don't get changes to items  
moved out of your editing area nor items that have been deleted. There  
is talk of this changing.

Shaun