Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/10081#discussion_r46363403
--- Diff:
core/src/main/scala/org/apache/spark/memory/UnifiedMemoryManager.scala ---
@@ -130,6 +130,8 @@ private[spark] class UnifiedMemoryManager
private[memory] (
object UnifiedMemoryManager {
+ private val RESERVED_SYSTEM_MEMORY_BYTES = 300 * 1024 * 1024
--- End diff --
you should document what this is and update the classdoc for
UnifiedMemoryManager
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