HeartSaVioR commented on a change in pull request #31355:
URL: https://github.com/apache/spark/pull/31355#discussion_r585270435
##########
File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/v2/DistributionAndOrderingUtils.scala
##########
@@ -32,23 +32,34 @@ object DistributionAndOrderingUtils {
case write: RequiresDistributionAndOrdering =>
val resolver = conf.resolver
- val distribution = write.requiredDistribution match {
+ val numParts = write.requiredNumPartitions()
+ val (distribution, numPartitions) = write.requiredDistribution match {
case d: OrderedDistribution =>
- d.ordering.map(e => toCatalyst(e, query, resolver))
+ val dist = d.ordering.map(e => toCatalyst(e, query, resolver))
+ (dist, numParts)
case d: ClusteredDistribution =>
- d.clustering.map(e => toCatalyst(e, query, resolver))
+ val dist = d.clustering.map(e => toCatalyst(e, query, resolver))
+ (dist, numParts)
case _: UnspecifiedDistribution =>
- Array.empty[Expression]
+ (Array.empty[Expression], numParts)
}
val queryWithDistribution = if (distribution.nonEmpty) {
- val numShufflePartitions = conf.numShufflePartitions
+ val finalNumPartitions = if (numPartitions > 0) {
+ numPartitions
+ } else {
+ conf.numShufflePartitions
+ }
// the conversion to catalyst expressions above produces SortOrder
expressions
// for OrderedDistribution and generic expressions for
ClusteredDistribution
// this allows RepartitionByExpression to pick either range or hash
partitioning
- RepartitionByExpression(distribution, query, numShufflePartitions)
+ RepartitionByExpression(distribution, query, finalNumPartitions)
} else {
- query
+ if (numPartitions > 0) {
+ Repartition(numPartitions, shuffle = true, query)
Review comment:
@aokolnychyi kindly reminder.
----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
For queries about this service, please contact Infrastructure at:
[email protected]
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
