Github user sryza commented on a diff in the pull request:
https://github.com/apache/spark/pull/4450#discussion_r29171158
--- 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 --
Yeah, I definitely don't think we should expect to tune this in normal
operation. My thinking was not to document it and mainly to make it accessible
if people want to play around with it for benchmarking, but I can take it out
too.
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