Writing Data to s3 from Dataiku

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Ankur30
Ankur30 Partner, Dataiku DSS Core Designer, Dataiku DSS Core Concepts, Dataiku DSS Adv Designer Posts: 40 Partner

Good Morning

I am working on writing/appending data to s3 bucket from dataiku. But everytime i run my synch recipe a new csv file is created , i want data in a single csv file everytime i run my synch recipe.

Kindly help me with solution. Please find attached screenshot.

Best Answer

  • Alexandru
    Alexandru Dataiker, Dataiku DSS Core Designer, Dataiku DSS ML Practitioner, Dataiku DSS Adv Designer, Registered Posts: 1,209 Dataiker
    edited July 17 Answer ✓
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    Hi,

    The error suggests you are using code that writes to the local filesystem.

    For non-filesystem managed folders (HDFS, S3, …), you need to use the various read/download and write/upload APIs.

    For example use upload_stream() or upload_file() SeeL https://doc.dataiku.com/dss/latest/python-api/managed_folders.html for more details.

    Here is an generic example :

    ```
    import dataiku
    import pandas as pd, numpy as np
    from dataiku import pandasutils as pdu
    
    managed_folder_id = "URKU7Oqb"
    
    # Read dataset convert df to csv inst
    my_dataset = dataiku.Dataset("customers_labeled_prepared")
    df = my_dataset.get_dataframe()
    
    df.to_csv(index=False).encode("utf-8")
    
    # Write recipe outputs
    output_folder = dataiku.Folder(managed_folder_id)
    output_folder.upload_stream("some_name.csv", df.to_csv(index=False).encode("utf-8"))
    ```

Answers

  • Alexandru
    Alexandru Dataiker, Dataiku DSS Core Designer, Dataiku DSS ML Practitioner, Dataiku DSS Adv Designer, Registered Posts: 1,209 Dataiker
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    Hi Ankur,

    By default, any new data will be written to new files when syncing to an S3 Dataset.

    To change this behavior you can edit the settings of the output dataset under Advanced - Force single output file and you can also set the file base name :

    Please refer to screenshot below:

    Screenshot 2021-10-26 at 12.07.13.png

    Let me know if that works for you.

  • Ankur30
    Ankur30 Partner, Dataiku DSS Core Designer, Dataiku DSS Core Concepts, Dataiku DSS Adv Designer Posts: 40 Partner
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    Hi @AlexT
    ,

    Thanks for this but I want to write all the input DSS datasets in the csv format to my s3 bucket using python recipe. But while writing I am getting error. Attached is the screenshot of error message.

    Regards,

    Ankur.

  • Ankur30
    Ankur30 Partner, Dataiku DSS Core Designer, Dataiku DSS Core Concepts, Dataiku DSS Adv Designer Posts: 40 Partner
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    Hi @AlexT
    ,

    Thank you for all the help and support you have provided to me till now. Looking forward for your continued support. i really appreciate it.

    Thank You,

    Ankur.

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