cloud-fan commented on a change in pull request #28022: [SPARK-31253][SQL] Add
metrics to AQE shuffle reader
URL: https://github.com/apache/spark/pull/28022#discussion_r400281351
##########
File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/adaptive/OptimizeSkewedJoin.scala
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@@ -120,7 +120,8 @@ case class OptimizeSkewedJoin(conf: SQLConf) extends
Rule[SparkPlan] {
} else {
mapStartIndices(i + 1)
}
- PartialReducerPartitionSpec(reducerId, startMapIndex, endMapIndex)
+ val dataSize =
startMapIndex.until(endMapIndex).map(mapPartitionSizes(_)).sum
Review comment:
I'd like to keep `splitSizeListByTargetSize` simple so that we can reuse it
in more places, e.g. coalescing the shuffle partitions.
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