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df.write_lance does't support writing to Alibaba OSS

Open weixiuli opened this issue 1 month ago • 2 comments

Describe the bug

We use the daft.write_lance to write OSS, and find it does't support yet.

  df.write_lance(
                lance_out,
                io_config=io_conf,
                mode="create",
                max_bytes_per_file=1024,
            )
Traceback (most recent call last):
  File "/home/ray/daft/test_picture_oss.py", line 205, in <module>
    df_lance_back = write_lance_with_retry()
  File "/home/ray/daft/test_picture_oss.py", line 183, in write_lance_with_retry
    df.write_lance(
  File "/home/ray/anaconda3/lib/python3.10/site-packages/daft/api_annotations.py", line 32, in _wrap
    return func(*args, **kwargs)
  File "/home/ray/anaconda3/lib/python3.10/site-packages/daft/dataframe/dataframe.py", line 1514, in write_lance
    return self.write_sink(sink)
  File "/home/ray/anaconda3/lib/python3.10/site-packages/daft/api_annotations.py", line 32, in _wrap
    return func(*args, **kwargs)
  File "/home/ray/anaconda3/lib/python3.10/site-packages/daft/dataframe/dataframe.py", line 1426, in write_sink
    micropartition = sink.finalize(results["write_results"])
  File "/home/ray/anaconda3/lib/python3.10/site-packages/daft/io/lance/lance_data_sink.py", line 177, in finalize
    dataset = lance.LanceDataset.commit(
  File "/home/ray/anaconda3/lib/python3.10/site-packages/lance/dataset.py", line 3200, in commit
    new_ds = _Dataset.commit(
OSError: LanceError(IO): Operation not yet implemented., /home/runner/work/lance/lance/rust/lance-table/src/io/commit.rs:1044:50

To Reproduce

No response

Expected behavior

No response

Component(s)

Native Runner

Additional context

No response

weixiuli avatar Nov 11 '25 09:11 weixiuli

@weixiuli
Lance supports the OSS protocol. You can directly release the code here to OSS and try it out. Contributions are welcome.

https://github.com/Eventual-Inc/Daft/blob/ec202771d0b031eee2b3538cfcd15ad6f4aead38/daft/io/object_store_options.py#L10

Jay-ju avatar Nov 11 '25 11:11 Jay-ju

@weixiuli any questions update?

Jay-ju avatar Nov 13 '25 02:11 Jay-ju