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https://issues.apache.org/jira/browse/SPARK-59165?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated SPARK-59165:
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Labels: pull-request-available (was: )
> SCD2 Ignore-null support; Introduce version map in `_cdc_metadata`
> ------------------------------------------------------------------
>
> Key: SPARK-59165
> URL: https://issues.apache.org/jira/browse/SPARK-59165
> Project: Spark
> Issue Type: Sub-task
> Components: Declarative Pipelines
> Affects Versions: 4.4.0
> Reporter: Anish Mahto
> Priority: Major
> Labels: pull-request-available
>
> In order to support ignore-null in SCD2, we need to persist additional
> metadata per row that tells us which column values were actually authored by
> the upsert event that created the row, and which columns were unauthored by
> the same upsert event and instead need to inherit a value from a previous row.
> This ticket is concerned with simply defining the version map schema/concept,
> and adding it to the `_cdc_metadata` per row. The version map will not be
> used yet, but will start materializing in both old and new AutoCDC tables.
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