A new long-term version of osm2pgsql has been released, 0.88.0. This
includes the work done in the 0.87.x development series and the porting
to C++.
Like all versions, 0.88.0 can be obtained from
https://github.com/openstreetmap/osm2pgsql
Potentially breaking changes
- A database reload is recommended. If not, the schema migrations in
https://github.com/openstreetmap/osm2pgsql/blob/master/docs/migrations.md
are required.
- Osm2pgsql is now C++ and requires the Boost libraries. Build scripts and
package dependencies may need adjustment
Major new features
- 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
https://github.com/openstreetmap/osm2pgsql/blob/master/docs/multi.md.
One potential use for this feature is matching an existing schema for
data, to allow OSM data to be a drop-in replacement.
- In-memory pending tracking instead of in-database, with significant
performance gains.
- Rendering tables are ordered by GeoHash when created, resulting in
significant performance improvements.
- z_logic has been improved, taking into account more recent work across
multiple styles. https://github.com/openstreetmap/osm2pgsql/pull/374
has more information.
Other changes
- The node storage has been improved, and out of order nodes and nodes
at 0,0 should now always be handled correctly
- A new test suite with unit tests
- Many bug-fixes and cleanups
Known issues
- Append mode is not supported with non-slim. This is suported in
0.89.0-dev, but is frequently a user error. Typically, when a user
does this they should instead merge input files with osmosis/osmconvert
and use --create
What's next?
osm2pgsql is switching to libosmium for parsing and will require a C++11
compiler. These changes are already in 0.89.0-dev. C++11 is enabling new
cleanups. Beyond this, it depends on contributor time and interest and if
anyone decides to pay for development.
User diary version: http://www.openstreetmap.org/user/pnorman/diary/35414
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