I have some problems with the Python SDK. when I try to upload a file to LakeFS with metadata as a dict. When I check the metadata online or when read by the python SDK there is only the first entry from the metadata present. I have the same problem whether I use the object.upload or the object.write method.I'm not sure if there is a Problem on my side or with LakeFS. Here is the code I'm using at the Moment:

with open(filename, "r+b") as f:
  with self.branch_data.object(path=self._string_builder()).writer( mode="wb", metadata=meta_data) as writer:
    writer.write(f.read())

The dict is converted to type str:str beforehand

@Sebastian Haugg Hi! Why are you converting the dict to a string?

No, sorry for not making it clear, Im converting the entries to string beforehand. If the entries are eg. {"a": 1, "b": 0.01, "c": "text"} it would be converted to {"a": "1", "b": "0.01", "c": "text"}

Which SDK version are you currently using?

lakefs: 0.4.1 lakefs-sdk: 1.13.0 will add meta_data output as soon as Code is finished running

Thank you @Sebastian Haugg Can you please try to print

meta_data

before calling

writer.write

and post it here?

`print(meta_data)`output before calling the context manager:

{'Preprocessor': 'CDE', 'scaling_period': '35', 'n_target_days': '1', 'replace_zeros': 'True', 'remove_density': '0.01'}

Output after calling the context manager(just to be sure):

{'Preprocessor': 'CDE', 'scaling_period': '35', 'n_target_days': '1', 'replace_zeros': 'True', 'remove_density': '0.01'}

How did you identify you only have the first key in the metadata?

re 1) in the web-ui in the object-info it only displays the first entry(see screenshot) and additionally when I read the metadata at another place in the code with `obj.stats().metadata`then the resulting dictionary only has the first entry of the "original" matedata. re 2) the `stats()`call right after writing the object returns

{'path': 'gold/<customer>/File-Full.parquet', 'physical_address': 's3://<repo>/data/<uuid>/<uuid>', 'physical_address_expiry': None, 'checksum': 'abc123a068516cc2fcdd11bfff789xyz', 'size_bytes': 134440782, 'mtime': 1714126066, 'metadata': {'preprocessor': 'CDE'}, 'content_type': 'application/octet-stream'}

, which I redacted a little bit because of the policy at my company.

That's so strange... I am not able to reproduce your issue in my setup. Can you please provide a minimal code snippet that reproduces the issue

Since the Code contains highly private information and I'm not sure what and what not to share my supervisor will take this issue to the private help-channel from the company. All further discussion will be held there. Thank you for your time so far 😄 and have a nice Weekend

Have a good weekend