anishshri-db commented on code in PR #47104:
URL: https://github.com/apache/spark/pull/47104#discussion_r1662987074
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sql/core/src/main/scala/org/apache/spark/sql/execution/streaming/IncrementalExecution.scala:
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@@ -187,23 +187,33 @@ class IncrementalExecution(
}
}
- object WriteStatefulOperatorMetadataRule extends SparkPlanPartialRule {
+ // Planning rule used to record the state schema for the first run and
validate state schema
+ // changes across query runs.
+ object StateSchemaAndOperatorMetadataRule extends SparkPlanPartialRule {
override val rule: PartialFunction[SparkPlan, SparkPlan] = {
+ // In the case of TransformWithStateExec, we want to collect this
StateSchema
+ // filepath, and write this path out in the OperatorStateMetadata file
case stateStoreWriter: StateStoreWriter if isFirstBatch =>
+ val stateSchemaVersion = stateStoreWriter match {
+ case tws: TransformWithStateExec => tws.stateSchemaVersion
Review Comment:
This would not make it possible to evolve this in the future right ? if we
use the hard coded value ?
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