Github user ksakellis commented on a diff in the pull request:
https://github.com/apache/spark/pull/4067#discussion_r24223601
--- Diff: core/src/main/scala/org/apache/spark/executor/TaskMetrics.scala
---
@@ -358,5 +374,12 @@ class ShuffleWriteMetrics extends Serializable {
private[spark] def incShuffleWriteTime(value: Long) = _shuffleWriteTime
+= value
private[spark] def decShuffleWriteTime(value: Long) = _shuffleWriteTime
-= value
-
+ /**
+ * Total number of records written to the shuffle by this task
+ */
+ @volatile private var _recordsWritten: Long = _
--- End diff --
oh, must have missed this. Yes we can rename it. I thought it was redundant
because the class is already called ShuffleWriteMetrics.
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