[OSM-dev] Release candidate for new osm2pgsql 0.88.0 stable release

Paul Norman penorman at mac.com
Sat Jul 11 06:49:03 UTC 2015

We are preparing a new osm2pgsql stable series release, 0.88.0. This is
based off of the work done in 0.87 development series with porting to C++.

Help is needed in doing a last round of tests before release, in
particular the z_order logic. 0.88.0-RC1 can be obtained from

If upgrading from a 0.86.0 or earlier created database, the schema
migrations in 
are required.

Major changes

Osm2pgsql is now C++ and requires the Boost libraries.

A new backend has been added, the “multi” backend. This allows multiple
tables which can each contain different types of features. More
documentation is available at 

In-database pending way tracking has been replaced with in-memory
tracking, offering significant performance gains. This requires a
schema migration for old databases.

z_order logic has been improved, taking into account recent work across
multiple styles. https://github.com/openstreetmap/osm2pgsql/pull/374
has more information. This requires a schema migration for old databases.

A diary post version of this is at http://osm.org/user/pnorman/diary/35369

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