anew commented on code in PR #57490:
URL: https://github.com/apache/spark/pull/57490#discussion_r3649120581
##########
sql/pipelines/src/main/scala/org/apache/spark/sql/pipelines/autocdc/Scd2BatchProcessor.scala:
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@@ -1410,6 +1395,44 @@ object Scd2BatchProcessor {
AutoCdcReservedNames.cdcMetadataColName
)
+ /**
+ * Resolve [[ChangeArgs.trackHistorySelection]] against `schema` and return
the field names of
+ * the history-tracking columns: the eligible user-data columns (those that
are neither
+ * [[ChangeArgs.keys]] nor framework reserved columns) filtered through the
selection.
+ *
+ * This is the single source of truth for which columns define an SCD2 run.
It is called both
+ * per-microbatch (against the reconciled dataframe's schema) and at
+ * [[org.apache.spark.sql.pipelines.graph.AutoCdcMergeFlow]] construction
time (against the
+ * user-selected source schema), so an unresolvable or ineligible selection
fails fast with a
+ * user-actionable [[org.apache.spark.sql.AnalysisException]] instead of
surfacing mid-stream
+ * (SPARK-58313).
Review Comment:
Removed all SPARK-58313 references from the changed files
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