This release makes the new middle database format the default. If you have not switched already, you need to reimport your database to take advantage of that.
We have changed the way we are parsing the command line options. The new code uses the CLI11 library (a copy of which is included in the repository) and is much cleaner and also much stricter. You now get warnings (and sometimes errors) for many combinations of options that don't make sense. Please check the output from osm2pgsql and osm2pgsql-replication for such messages and fix your command lines accordingly. Note especially that duplicated options are not allowed any more. This can happen, for instance, when using osm2pgsql-replication which adds the database connection parameters (such as -d) when it calls osm2pgsql.
If all goes well this will be the last release starting with a 1. We are planning for a version 2.0.0 in the second quarter of 2024. In that release we will remove all the functionality that has been deprecated. We will also remove support for the legacy database middle format and only support the new format introduced in version 1.9.0.
Further changes:
- The number of database connections that osm2pgsql was opening could be quite large as it was depending on the number of tables. This is no longer the case. Osm2pgsql is opening far fewer connections now, usually you will not need to change the PostgreSQL
max_connectionssettings any more. - Osm2pgsql now adds the context (the part of osm2pgsql responsible for a database connection) and the connection number to the application name used in the database connection. This allows you to better monitor what osm2pgsql is doing using the
pg_stat_activitytable in the database. - Bugfix: Using the new database format with
-x, --extra-attributesdid not work due to a wrong SQL command. This is fixed now.
Many thanks to Thunderforest who supported development of the features in this release.