write_metadata() seems broken

[UserBird]

In my recipe I do:

output = dataiku.Dataset(get_output_names_for_role(df_name)[0])
metadata = output.read_metadata()
metadata['custom']['kv'].update(meta)
output.write_metadata(metadata)

yet I get this in the logs:

[03:44:37] [INFO] [dku.utils]  -     output.write_metadata(metadata)
[03:44:37] [INFO] [dku.utils]  -   File "/home/dataiku/dataiku-dss-4.0.8/python/dataiku/core/dataset.py", line 872, in write_metadata
[03:44:37] [INFO] [dku.utils]  -     "metadata" : json.dumps(meta)
[03:44:37] [INFO] [dku.utils]  -   File "/home/dataiku/dataiku-dss-4.0.8/python/dataiku/core/intercom.py", line 119, in jek_or_backend_void_call
[03:44:37] [INFO] [dku.utils]  -     return jek_void_call(path, data, err_msg, **kwargs)
[03:44:37] [INFO] [dku.utils]  -   File "/home/dataiku/dataiku-dss-4.0.8/python/dataiku/core/intercom.py", line 113, in jek_void_call
[03:44:37] [INFO] [dku.utils]  -     return _handle_void_resp(jek_api_post_call(path, data, **kwargs), err_msg = err_msg)
[03:44:37] [INFO] [dku.utils]  -   File "/home/dataiku/dataiku-dss-4.0.8/python/dataiku/core/intercom.py", line 162, in _handle_void_resp
[03:44:37] [INFO] [dku.utils]  -     raise Exception("%s: %s" % (err_msg, _get_error_message(err_data).encode("utf8")))
[03:44:37] [INFO] [dku.utils]  - Exception: None: Not Found: /dip/api/intercom/write-metadata
[03:44:37] [INFO] [dku.utils]  - End Python stack

Something is wrong, I think... Anyone can enlighten me?

[Alex_Combessie]

Hello,

We could not reproduce your issue on the latest version of DSS (4.1.2). We ran the following code:

output = dataiku.Dataset("mydataset")
meta = {"foo": "bar"}
metadata['custom']['kv'].update(meta)
output.write_metadata(metadata)

with the expected results. Note that we added the line `meta = {"foo": "bar"}`.

Could you upgrade to the latest version and try again?

Cheers,

Alex