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Comment: Published by Scroll Versions from space DEV and version r083

D toc

This section contains information on the fie formats and compression schemes that are supported for input to and output of 

D s product
rtrue

Info

NOTE: To work with formats that are proprietary to a desktop application, such as Microsoft Excel, you do not need the supporting application installed on your desktop.

Filenames

Info

NOTE: During import, the

D s webapp
identifies file formats based on the extension of the filename.


Info

NOTE: Filenames that include special characters can cause problems during import or when publishing to a file-based datastore.

Forbidden characters in import filenames:


The following list of characters present issues in the listed area of the product. If you encounter issues, the following listings may provide some guidance on where the issue occurred.

Tip

Tip: You should avoid using any of these characters in your import filenames. This list may not be complete for all available running environments.

  • General:

    Code Block
    "/"
  • Seb browser: 

    Code Block
    "\"

Native Input File Formats

D s product
rtrue
 can read and import directly these file formats:

  • CSV
  • JSON v1, including nested

    Info

    NOTE: JSON files can be read natively but often require additional work to properly structure into tabular format. Depending on how the

    D s webapp
    is configured (v1 or v2), JSON files may require conversion before they are available for use in the application. See "Converted file formats" below.


    Info

    NOTE:

    D s product
    requires that JSON files be submitted with one valid JSON object per line. Consistently malformed JSON objects or objects that overlap linebreaks might cause import to fail. See Initial Parsing Steps in the User Guide

  • Plain Text
  • LOG
  • TSV
  • Parquet

    Info

    NOTE: When working with datasets sourced from Parquet files, lineage information and the $sourcerownumber reference are not supported.

  • Avro

    Info

    NOTE: When working with datasets sourced from Avro files, lineage information and the $sourcerownumber reference are not supported.

  • Google Sheets

    Info

    NOTE: Individual users must enable access to their Google Drive. No data other than Google Sheets is read from Google Drive.

    See Import Google Sheets Data.

For more information on data is handled initially, see Initial Parsing Steps in the User Guide.

Converted file formats

Files of the following type are not read into the product in their native format. Instead, these file types are converted using the Conversion Service into a file format that is natively supported, stored in the base storage layer, and then ingested for use in the product.

Info

NOTE: Compressed files that require conversion of the underlying file format are not supported for use in the product.

Converted file formats:

  • Excel (XLS/XLSX)

    Tip

    Tip: You may import multiple worksheets from a single workbook at one time. See Import Excel Data in the User Guide.

  • JSON v2

Notes on JSON:

There are two methods of ingesting JSON files for use in the product. 

  • JSON v2 - This newer version reads the JSON source file through the Conversion Service, which stores a restructured version of the data in tabular format on the base storage layer for quick and simple use within the application. 

    Tip

    Tip: This method is enabled by default and is recommended. For more information, see Working with JSON v2.

      

  • JSON v1 - This older version reads JSON files directly into the platform as text files. However, this method often requires additional work to restructure the data into tabular format. For more information, see Working with JSON v1.

Native Output File Formats

D s product
 can write to these file formats:

  • CSV
  • JSON

  • Avro

  • BigQuery Table

Compression Algorithms

Info

NOTE: Import of a compressed file whose underlying format requires conversion through the Conversion Service is not supported.



Read Native File Formats


 GZIPBZIPSnappyNotes
CSV SupportedSupportedSupported
JSON v2Not supportedNot supportedNot supportedA converted file format. See above.
JSON v1SupportedSupportedSupportedNot a converted file format. See above.
Avro  Supported

Write Native File Formats


 GZIPBZIPSnappy
CSVSupportedSupportedNot supported
JSONSupportedSupportedNot supported