Github user JoshRosen commented on a diff in the pull request:
https://github.com/apache/spark/pull/9127#discussion_r42906959
--- Diff: core/src/main/scala/org/apache/spark/memory/MemoryManager.scala
---
@@ -42,8 +60,10 @@ private[spark] abstract class MemoryManager extends
Logging {
}
// Amount of execution/storage memory in use, accesses must be
synchronized on `this`
- protected var _executionMemoryUsed: Long = 0
- protected var _storageMemoryUsed: Long = 0
+ @GuardedBy("this") protected var _executionMemoryUsed: Long = 0
+ @GuardedBy("this") protected var _storageMemoryUsed: Long = 0
+ // Map from taskAttemptId -> memory consumption in bytes
+ @GuardedBy("this") private val memoryConsumptionForTask = new
mutable.HashMap[Long, Long]()
--- End diff --
Good idea.
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