Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/19135#discussion_r139343473
--- Diff:
core/src/main/scala/org/apache/spark/internal/config/package.scala ---
@@ -385,4 +385,17 @@ package object config {
.checkValue(v => v > 0 && v <= Int.MaxValue,
s"The buffer size must be greater than 0 and less than
${Int.MaxValue}.")
.createWithDefault(1024 * 1024)
+
+ private[spark] val UNROLL_MEMORY_CHECK_PERIOD =
+ ConfigBuilder("spark.storage.unrollMemoryCheckPeriod")
+ .doc("The memory check period is used to determine how often we
should check whether "
--- End diff --
let's call `.internal()` here, to make them internal configs, as we don't
expect users to tune it.
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