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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