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Previewing data in a pipeline

Last updated: 9/23/2026

Talend Pipeline Designer allows you to preview a sample of your data at every step of the pipeline and ensure that data is being processed as expected.

To understand which engine is used to calculate data samples, display data preview, or execute pipelines, read the Remote Engine Gen2 documentation.

Procedure

  1. On the Pipelines page, click the pipeline that you have created to open it in the pipeline designer.
  2. Click the source dataset to see a preview of your original sample.

    Example of a sample of a file listing customers stored in a database table. The sample calculation is done on the Cloud Engine for Design and is displayed in Grid view mode:

    The preview shows a customer file sample displayed in Grid view mode.
    Example of a preview of the same data after filtering customers and rejecting those without a valid State ID:
    The preview shows the filtered out data, customers without a valid State ID.

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