Is anyone able to use

meltano-map-transformer

with Meltano v3? I get the error:

Mapper 'meltano-map-transformer' is not known to Meltano. Try running `meltano lock --update --all` to ensure your plugins are up to date.

when I try to install the mapper, or when I try to run

meltano lock --update --all

. Both of these commands work with v2.20.0 but break with v3.1.0. Similarly, if the transformer is already installed, I can run a job containing a mapper with v2.20.0 but not if I then upgrade to v3.1.0.

Hi Peter What does you

meltano.yml

look like?

Hi Edgar. In the plugins section I have:

mappers:
    - name: meltano-map-transformer
      pip_url: "git+<https://github.com/MeltanoLabs/meltano-map-transform.git>"
      executable: meltano-map-transform
      mappings:
        - name: rename_column
          config:
            stream_maps:
              demographics:
                foo_text: foo
                foo: null

I'm able to run

meltano lock --update --all

on that with Meltano 3.1 🤔

I see. Can you tell me what platform and version of python you’re using?

Sure. macOS 13.6, CPython 3.11.4.

Thanks. I’m running on OSX as well. Weirdly,

meltano lock --update --all

now succeeds for me with 3.1, but:

meltano install mappers

still produces the error. Does that command work for you? With 3.1 I also still get the error if I try to run a task containing a mapper.

I see,

meltano install

and

meltano install mappers

do fail. I wonder if it's related to changes made in https://github.com/meltano/meltano/pull/7992.

Yes it does look like that PR touches the relevant section of the config code. It looks like it also introduced the

Ambiguous mapping name

bug that occurs with mapper config inheritance.