Awesome, thanks a lot for this diff!

Note that you also need to update the java/server/src/test/dataset/generate_graph.sh script since the Docker environment has changed.

In D1768#41565, @haltode wrote:

Note that you also need to update the java/server/src/test/dataset/generate_graph.sh script since the Docker environment has changed.

This is now done.

Note that this diff still makes the test fail after re-running generate_graph.sh, because apparently the mappings are no longer generated. (Although it doesn't seem compress_graph.sh has ever generated them, so I'm not sure it's related to this diff [?]).
Anyway, if that's OK with you, please accept this diff as is (unless other issues are affected by it), and fix generate_graph.sh later on in a subsequent commit, after it lands.

In D1768#41627, @haltode wrote:

The mapping has always been a separate command but we can indeed add it to the generate_graph.sh script.

Oh, ok, that explains it.

That means that the README on how to recreate the testdata isn't correct at present (or at least it's incomplete).

Integrate this into generate_graph.sh is a good idea. When it's done, we can also further simplify docs/docker.rst.

In D1768#41639, @zack wrote:

In D1768#41627, @haltode wrote:

The mapping has always been a separate command but we can indeed add it to the generate_graph.sh script.

Oh, ok, that explains it.

That means that the README on how to recreate the testdata isn't correct at present (or at least it's incomplete).

Integrate this into generate_graph.sh is a good idea. When it's done, we can also further simplify docs/docker.rst.

Ok now I remember why this was separated, I was waiting on shipping the swh-graph.jar so I could add the step inside the compress_graph. I am tracking this issue in T1941.