[OSM-dev] Daily Planet.osm

Schuyler Erle schuyler at nocat.net
Mon Apr 30 11:25:03 BST 2007


* On 30-Apr-2007 at  3:12AM PDT, Nick Whitelegg said:
> >Incremental dumps already have been discussed. I think it is a good 
> >solution for the following reasons :
> 
> My only concern (and this may not be a real issue) is that it would 
> require more memory to patch a planet.osm than just convert it to SQL - 
> and if it does, they will be more difficult to deal with on systems with 
> restricted memory. This may be a completely false assumption though.

If one is importing to a database, then using David Earl's suggestion
of serializing the incremental dump in the form of
insert/update/delete changes should result into an import process with
a constant memory footprint. If the serialization is XML, a SAX parser
will be necessary, also.

SDE




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