Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/21754#discussion_r207188779
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/exchange/ExchangeCoordinator.scala
---
@@ -83,16 +83,17 @@ import org.apache.spark.sql.execution.{ShuffledRowRDD,
SparkPlan}
* - post-shuffle partition 3: pre-shuffle partition 3 and 4 (size 50 MB)
*/
class ExchangeCoordinator(
- numExchanges: Int,
advisoryTargetPostShuffleInputSize: Long,
minNumPostShufflePartitions: Option[Int] = None)
extends Logging {
// The registered Exchange operators.
private[this] val exchanges = ArrayBuffer[ShuffleExchangeExec]()
--- End diff --
ah you are right
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