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lineage

David Liu edited this page Sep 28, 2025 · 3 revisions

ERD

Lineage

  • Lineage is computed on a one-year rolling window
  • Lineage is not captured when:
    • table/view, schema or catalog is renamed
    • you use Spark SQL dataset checkpointing
    • you want to cover Global temp views, Stack function
    • you want to cover tables under system.information_schema
  • Column lineage is not captured when:
    • either source or target is not referenced by table name. such as select * from delta."s3://<bucket>/<path>"
  • Immutable: You cannot delete table rows of system lineage tables
    • To delete lineage data, you must delete the metastore managing the Unity Catalog objects

    • data retention: Managed table data and metadata will be auto-deleted after 30 days.

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