[OSM-talk] Somebody should offer planet file postgis dump files

Daniel Koć daniel at xn--ko-wla.pl
Sun Sep 27 13:55:06 UTC 2015


W dniu 27.09.2015 2:54, Stephen Knox napisał(a):

> Does it really take this long to import a planet file these days? I
> would be interested to know if anyone else has imported one recently.
> I may import one myself at some point, but if it takes 6 days I
> probably won't bother.

Even if this is not 6 days long, it may still make sense to use 
differential dumps for example.

I don't know how much additional resources we would need to create them 
and how faster would it be to import the data, but after one big import 
at - let's say - the beginning of a month (full copy) you just update it 
with small "patches" (daily diffs) and you're done for some time. Weekly 
diffs may be also of some use, but it needs some testing to know, of 
course.

If this would cause disc space shortage, we could drop creating full 
dumps weekly and make them only once a month.

This could make importing much easier for established services at the 
cost of more trouble to start the new ones (they should probably wait 
for next month to be in sync if we need to drop full weekly dumps), but 
I think it's worth considering.

-- 
"The train is always on time / The trick is to be ready to put your bags 
down" [A. Cohen]



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