Also, tried rerunning an old task that used to run succesfully back in April on flyte-binary 1.10 but now is failing on 1.13, so I'm sure it's due to a backend change. I assume I'm just missing a new dependency here. This is the stacktrace when trying to output a pandas dataframe from a task. Which is recommended here, pyarrow or fastparquet?

TypeError: Failed to convert outputs of task 'jpg_workflow.lpr_service.main.lpr_task' at position 0:
  Unable to find a usable engine; tried using: 'pyarrow', 'fastparquet'.
A suitable version of pyarrow or fastparquet is required for parquet support.
Trying to import the above resulted in these errors:
 - Missing optional dependency 'pyarrow'. pyarrow is required for parquet support. Use pip or conda to install pyarrow.
 - Missing optional dependency 'fastparquet'. fastparquet is required for parquet support. Use pip or conda to install fastparquet.