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add experimental option for enabling forward dependencies

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Sarah Hoffmann
2022-11-04 17:48:05 +01:00
parent 925ac1e1b9
commit b6ff697ff0
4 changed files with 37 additions and 5 deletions
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docs/customize/Settings.md
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@@ -148,6 +148,29 @@ Setting this option to 'yes' means that Nominatim skips reindexing of contained
objects when the area becomes too large.
#### NOMINATIM_UPDATE_FORWARD_DEPENDENCIES
| Summary | |
| -------------- | --------------------------------------------------- |
| **Description:** | Forward geometry changes to dependet objects |
| **Format:** | bool |
| **Default:** | no |
| **Comment:** | EXPERT ONLY. Must not be enabled after import. |
The geometry of OSM ways and relations may change when a node that is part
of the object is moved around. These changes are not propagated per default.
The geometry of ways/relations is only updated the next time that the object
itself is touched. When enabling this option, then dependent objects will
be marked for update when one of its member objects changes.
Enabling this option may slow down updates significantly.
!!! warning
If you want to enable this option, it must be set already on import.
Do not enable this option on an existing database that was imported with
NOMINATIM_UPDATE_FORWARD_DEPENDENCIES=no.
Updates will become unusably slow.
#### NOMINATIM_LANGUAGES
| Summary | |