Github user pwendell commented on a diff in the pull request:
https://github.com/apache/spark/pull/4450#discussion_r29112553
--- Diff:
core/src/main/scala/org/apache/spark/util/collection/ExternalSorter.scala ---
@@ -113,11 +114,21 @@ private[spark] class ExternalSorter[K, V, C](
if (shouldPartition) partitioner.get.getPartition(key) else 0
}
+ private val metaInitialRecords =
conf.getInt("spark.shuffle.sort.metaInitialRecords", 256)
+ private val kvChunkSize = conf.getInt("spark.shuffle.sort.kvChunkSize",
8192)
--- End diff --
Also, any reason to make this tunable in the first place? I think ideally
we'd just have a value we're comfortable hard coding.
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