srielau commented on code in PR #58317:
URL: https://github.com/apache/spark/pull/58317#discussion_r4027800923


##########
sql/catalyst/src/main/scala/org/apache/spark/sql/execution/datasources/v2/DataSourceV2Relation.scala:
##########
@@ -115,7 +115,10 @@ case class DataSourceV2Relation(
     catalog: Option[CatalogPlugin],
     identifier: Option[Identifier],
     options: CaseInsensitiveStringMap,
-    timeTravelSpec: Option[TimeTravelSpec] = None)
+    timeTravelSpec: Option[TimeTravelSpec] = None,
+    // Bound at analysis so sameResult / cache reuse distinguish preserve-only 
vs standard
+    // CHAR/VARCHAR scans. None means the relation was not analyzed under 
first-class types.
+    charVarcharScanMode: Option[CharVarcharScanMode] = None)

Review Comment:
   Done: `WriteToDataSourceV2` now recaches through the same catalog-name / 
catalog-less `refreshCache` path as batch V2 writes after a successful commit, 
so PreserveNative and SparkStandard caches are rebuilt even when the 
micro-batch target is unbound. Covered by `micro-batch V2 write recaches all 
bound CHAR/VARCHAR scan modes`.



##########
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/LogicalRelation.scala:
##########
@@ -41,7 +41,10 @@ case class LogicalRelation(
     output: Seq[AttributeReference],
     catalogTable: Option[CatalogTable],
     override val isStreaming: Boolean,
-    @transient stream: Option[SparkDataStream])
+    @transient stream: Option[SparkDataStream],
+    // Bound at analysis so sameResult / cache reuse distinguish preserve-only 
vs standard
+    // CHAR/VARCHAR scans. None means the relation was not analyzed under 
first-class types.
+    charVarcharScanMode: Option[CharVarcharScanMode])

Review Comment:
   Done: `CommandUtils.recacheTableOrView` recaches V1 tables by catalog 
identity (and catalog-less `BaseRelation` via `recacheByV1Relation`) and Hive 
tables by qualified name before `recacheByPlan`, so one `refreshTable` rebuilds 
every bound CHAR/VARCHAR variant. Covered by `refreshTable recaches all bound 
CHAR/VARCHAR V1 scan modes`.



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