Anish Mahto created SPARK-59183:
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Summary: SCD2 Ignore-null support; Populate version map per event
row at ingest
Key: SPARK-59183
URL: https://issues.apache.org/jira/browse/SPARK-59183
Project: Spark
Issue Type: Sub-task
Components: Declarative Pipelines
Affects Versions: 4.4.0
Reporter: Anish Mahto
When processing an incoming microbatch, if ignore-null is enabled for the
AutoCDC flow, a non-null version map needs to be populated for every row in the
microbatch.
As per the version map contract (see `Scd2VersionMap`'s scaladoc), the version
map is populated with null-authorship information for every event, respecting
the currently active ignore-null selection.
This ticket is not concerned with reconciling the microbatch's version maps
with existing rows in the aux/target table.
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