Github user MaxGekk commented on a diff in the pull request:
https://github.com/apache/spark/pull/21638#discussion_r198243125
--- Diff:
core/src/main/scala/org/apache/spark/input/PortableDataStream.scala ---
@@ -45,10 +45,9 @@ private[spark] abstract class StreamFileInputFormat[T]
* which is set through setMaxSplitSize
*/
def setMinPartitions(sc: SparkContext, context: JobContext,
minPartitions: Int) {
- val defaultMaxSplitBytes = Math.max(
- sc.getConf.get(config.FILES_MAX_PARTITION_BYTES), minPartitions)
+ val defaultMaxSplitBytes =
sc.getConf.get(config.FILES_MAX_PARTITION_BYTES)
val openCostInBytes = sc.getConf.get(config.FILES_OPEN_COST_IN_BYTES)
- val defaultParallelism = sc.defaultParallelism
+ val defaultParallelism = Math.max(sc.defaultParallelism, minPartitions)
--- End diff --
Now it makes much more sense.
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