Upload Parquet file to Dataiku Managed Folder using Python API

Hi,

Could you confirm how you are trying to copy the parquet file to the manged folder? Perhaps by sharing a code snippet.

Using get_download_stream and upload_stream should work if the input file is already parquet format.

Here is a simple example of copying a parquet file.

# -*- coding: utf-8 -*-
import dataiku
import pandas as pd, numpy as np
from dataiku import pandasutils as pdu

# Read recipe inputs
input_folder = dataiku.Folder("uWgyw8kG")
output_folder =  dataiku.Folder("Ni8VoNvi")
filename = "userdata1.parquet"



parquet_file = input_folder.get_download_stream(filename)

output_folder.upload_stream("userdata1_copied.parquet", parquet_file)

If you need to convert a dataset to parquet then you can use something like this, please note for this you will need to add pyarrow to your code env

import dataiku
import pandas as pd, numpy as np
from dataiku import pandasutils as pdu
import io

# Read recipe inputs
orders = dataiku.Dataset("orders")
orders_df = orders.get_dataframe()


# define managed folder output
output_folder =  dataiku.Folder("uWgyw8kG")
output_filename = "orders.parquet"

#convert to parquet

f = io.BytesIO()

orders_df.to_parquet(f)

#write output

output_folder.upload_data(output_filename, f.getvalue())

Let me know if this helps or please share the code that is generating the error.