[Geocoding] Nominatim CONST_Osm2pgsql_Flatnode_File parameter

[Korstiaan Schipper]

Hi,

Can somebody explain me the meaning and function of the CONST_Osm2pgsql_Flatnode_File parameter in the settings.php file of the Nominatim software?
I imported Europe without it and I was wondering what this parameter will do?
I suppose I had to enable this parameter before the import but I didn't used it.
Does it create file (a large one?) or do I put a file there? (which one?).
What is the exact difference? (total disk space, speed, ...?)

Korstiaan

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