jingz-db commented on code in PR #47978:
URL: https://github.com/apache/spark/pull/47978#discussion_r1744307928


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sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/v2/state/StatePartitionReader.scala:
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@@ -68,10 +69,18 @@ abstract class StatePartitionReaderBase(
     stateVariableInfoOpt: Option[TransformWithStateVariableInfo],
     stateStoreColFamilySchemaOpt: Option[StateStoreColFamilySchema])
   extends PartitionReader[InternalRow] with Logging {
+  protected val schemaForValueRow: StructType =

Review Comment:
   Also perhaps we can leave a small comment here that we are only using this 
for state variables dummy value state in `createAndInit()`.



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