naveenp2708 commented on code in PR #57644:
URL: https://github.com/apache/spark/pull/57644#discussion_r3726190119
##########
sql/pipelines/src/main/scala/org/apache/spark/sql/pipelines/graph/DatasetManager.scala:
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@@ -284,9 +284,18 @@ object DatasetManager extends Logging {
val (catalog, identifier) =
PipelinesCatalogUtils.resolveTableCatalog(context.spark,
table.identifier)
- val outputSchema = table.specifiedSchema.getOrElse(
- resolvedDataflowGraph.inferredSchema(table.identifier).asNullable
- )
+ val outputSchema = table.specifiedSchema match {
+ case Some(ss) =>
+ // The user schema describes the logical table; the engine owns the
reserved AUTO CDC
+ // metadata column(s). Append any that the incoming flows produce but
the user omitted,
+ // so the created table matches what the AUTO CDC MERGE writes at
runtime.
+ val omittedReservedFields = AutoCdcMergeFlow
+
.reservedFields(resolvedDataflowGraph.inferredSchema(table.identifier))
+ .filterNot(f => ss.fieldNames.contains(f.name))
Review Comment:
Good call @HyukjinKwon , done. Switched ss.fieldNames to a Set before the
filterNot.
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