TL;DR

Update the num_workers fallback in Pipeline.__call__() to match the documented default of 8.

Guidance

• Verify the discrepancy between the documented default and the actual runtime default by inspecting the build_pipeline_init_args() docstring and the Pipeline.__call__() logic.
• Update the num_workers fallback in Pipeline.__call__() to 8 as suggested in the issue to ensure consistency with the documentation.
• Test the updated code to confirm that the runtime default now matches the documented value of 8.
• Consider adding additional logging or debugging statements to help identify any potential issues related to the num_workers parameter.

Example

# Updated fallback in Pipeline.__call__()
if num_workers is None:
    if self._num_workers is None:
        num_workers = 8  # Match the documented default
    else:
        num_workers = self._num_workers

Notes

This fix assumes that the documented default of 8 is the intended behavior and that updating the runtime default will not introduce any unintended consequences.

Recommendation

Apply the suggested workaround by updating the num_workers fallback in Pipeline.__call__() to 8, as this will ensure consistency with the documentation and provide the expected behavior for users relying on the documented default.