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https://issues.apache.org/jira/browse/SPARK-59645?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated SPARK-59645:
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Labels: pull-request-available (was: )
> SCD1 Ignore-null support; Refactor SCD1 microbatch reconciliation into
> strategies
> ----------------------------------------------------------------------------------
>
> Key: SPARK-59645
> URL: https://issues.apache.org/jira/browse/SPARK-59645
> Project: Spark
> Issue Type: Sub-task
> Components: Declarative Pipelines
> Affects Versions: 4.4.0
> Reporter: Anish Mahto
> Priority: Major
> Labels: pull-request-available
>
> Default SCD1 reconciliation accepts or rejects an event wholesale, so all
> columns share one row-level version. Ignore-null permits different events to
> author different leaves, requiring fundamentally different deduplication and
> tombstone reconciliation.
> Refactor `Scd1BatchProcessor` to delegate to a reconciliation strategy and
> move existing behavior into the default `Scd1RowLevelReconciliation`. This
> preserves current behavior while establishing the boundary for future
> leaf-level reconciliation.
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