Github user mccheah commented on a diff in the pull request:
https://github.com/apache/spark/pull/21221#discussion_r206312790
--- Diff: core/src/main/scala/org/apache/spark/memory/MemoryManager.scala
---
@@ -180,6 +180,26 @@ private[spark] abstract class MemoryManager(
onHeapStorageMemoryPool.memoryUsed +
offHeapStorageMemoryPool.memoryUsed
}
+ /**
+ * On heap execution memory currently in use, in bytes.
+ */
+ final def onHeapExecutionMemoryUsed: Long =
onHeapExecutionMemoryPool.memoryUsed
--- End diff --
Do these have to be `synchronized`?
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