make word count computation part of the import

Accurate word counts are now essential when using
the ICU tokenizer and don't hurt for the legacy one.

Adds about an hour import time.

diff --git a/docs/admin/Import.md b/docs/admin/Import.md
index 576c0097516b707fc353dbffadce301996913af8..7ebebde3559b925970b0557748c61f0d7f13ddac 100644 (file)
--- a/docs/admin/Import.md
+++ b/docs/admin/Import.md
@@ -271,20 +271,7 @@ reverse query, e.g. `http://localhost:8088/reverse.php?lat=27.1750090510034&lon=
 To run Nominatim via webservers like Apache or nginx, please read the
 [Deployment chapter](Deployment.md).
 
-## Tuning the database
-
-Accurate word frequency information for search terms helps PostgreSQL's query
-planner to make the right decisions. Recomputing them can improve the performance
-of forward geocoding in particular under high load. To recompute word counts run:
-
-```sh
-nominatim refresh --word-counts
-```
-
-This will take a couple of hours for a full planet installation. You can
-also defer that step to a later point in time when you realise that
-performance becomes an issue. Just make sure that updates are stopped before
-running this function.
+## Adding search through category phrases
 
 If you want to be able to search for places by their type through
 [special phrases](https://wiki.openstreetmap.org/wiki/Nominatim/Special_Phrases)

diff --git a/nominatim/clicmd/setup.py b/nominatim/clicmd/setup.py
index 27847920b80a434b1f4df0b1b4ac0b7b17ba5b24..07dacbb403a5e3c9d3d9947811b92e95fd5d86c8 100644 (file)
--- a/nominatim/clicmd/setup.py
+++ b/nominatim/clicmd/setup.py
@@ -125,6 +125,8 @@ class SetupAll:
                 freeze.drop_update_tables(conn)
         tokenizer.finalize_import(args.config)
 
+        LOG.warning('Recompute word counts')
+        tokenizer.update_statistics()
 
         webdir = args.project_dir / 'website'
         LOG.warning('Setup website at %s', webdir)