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https://issues.apache.org/jira/browse/SPARK-60097?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Anish Mahto updated SPARK-60097:
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Summary: SCD1 Ignore-null support; Define version map construction (was:
SCD1 Ignore-null support; define version map construction)
> SCD1 Ignore-null support; Define version map construction
> ---------------------------------------------------------
>
> Key: SPARK-60097
> URL: https://issues.apache.org/jira/browse/SPARK-60097
> Project: Spark
> Issue Type: Sub-task
> Components: Declarative Pipelines
> Affects Versions: 4.4.0
> Reporter: Anish Mahto
> Priority: Major
>
> Concretely define the contract for the _contents_ of the version map; the
> format the keys are written in, which leaves get an entry, and what the
> stored sequence represents when null or not null.
> Then implement the logic to construct a version map column expression as per
> the contract, given an upsert-representing row. Delete-representing rows need
> no equivalent operation, as they always hold null version maps
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