rdblue commented on a change in pull request #24623: [SPARK-27739][SQL]
df.persist should save stats from optimized plan
URL: https://github.com/apache/spark/pull/24623#discussion_r313104754
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File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/columnar/InMemoryRelation.scala
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@@ -146,17 +146,17 @@ object InMemoryRelation {
storageLevel: StorageLevel,
child: SparkPlan,
tableName: Option[String],
- logicalPlan: LogicalPlan): InMemoryRelation = {
+ optimizedPlan: LogicalPlan): InMemoryRelation = {
val cacheBuilder = CachedRDDBuilder(useCompression, batchSize,
storageLevel, child, tableName)
- val relation = new InMemoryRelation(child.output, cacheBuilder,
logicalPlan.outputOrdering)
- relation.statsOfPlanToCache = logicalPlan.stats
+ val relation = new InMemoryRelation(child.output, cacheBuilder,
optimizedPlan.outputOrdering)
+ relation.statsOfPlanToCache = optimizedPlan.stats
relation
}
- def apply(cacheBuilder: CachedRDDBuilder, logicalPlan: LogicalPlan):
InMemoryRelation = {
+ def apply(cacheBuilder: CachedRDDBuilder, optimizedPlan: LogicalPlan):
InMemoryRelation = {
val relation = new InMemoryRelation(
- cacheBuilder.cachedPlan.output, cacheBuilder, logicalPlan.outputOrdering)
- relation.statsOfPlanToCache = logicalPlan.stats
+ cacheBuilder.cachedPlan.output, cacheBuilder,
optimizedPlan.outputOrdering)
+ relation.statsOfPlanToCache = optimizedPlan.stats
Review comment:
Stats already differ in the v1 path because partition pruning happens in the
optimizer for data source tables (`PrunedInMemoryFileIndex`).
I see no reason not to get this in.
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