Writing to Lance Dataset

write_lance

write_lance(
    ds, 
    uri=None, 
    *, 
    namespace=None, 
    table_id=None, 
    schema=None, 
    mode="create", 
    **kwargs)

Write a Ray Dataset to Lance format.

Parameters:

• ds: Ray Dataset to write
• uri: Path to the destination Lance dataset (either uri OR namespace+table_id required)
• namespace: LanceNamespace instance for metadata catalog integration (requires table_id)
• table_id: Table identifier as list of strings (requires namespace)
• schema: Optional PyArrow schema
• mode: Write mode - "create", "append", or "overwrite"
• min_rows_per_file: Minimum rows per file (default: 1024 * 1024)
• max_rows_per_file: Maximum rows per file (default: 64 * 1024 * 1024)
• data_storage_version: Optional data storage version
• storage_options: Optional storage configuration dictionary
• ray_remote_args: Optional kwargs for Ray remote tasks
• concurrency: Optional maximum number of concurrent Ray tasks

Returns: None