HeartSaVioR commented on code in PR #47104:
URL: https://github.com/apache/spark/pull/47104#discussion_r1669846931


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sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala:
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@@ -2144,6 +2144,13 @@ object SQLConf {
       .timeConf(TimeUnit.MILLISECONDS)
       .createWithDefault(TimeUnit.MINUTES.toMillis(1)) // 1 minute
 
+  val STREAMING_TRANSFORM_WITH_STATE_OP_STATE_SCHEMA_VERSION =
+    buildConf("spark.sql.streaming.transformWithState.stateSchemaVersion")
+      .doc("The version of the state schema used by the transformWithState 
operator")
+      .version("4.0.0")
+      .intConf
+      .createWithDefault(3)

Review Comment:
   Never mind it's "schema" version (not "format" version), a new concept.



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