Github user ksakellis commented on a diff in the pull request:
https://github.com/apache/spark/pull/4510#discussion_r24464381
--- Diff: core/src/main/scala/org/apache/spark/executor/TaskMetrics.scala
---
@@ -344,6 +346,20 @@ class ShuffleReadMetrics extends Serializable {
private[spark] def decRemoteBytesRead(value: Long) = _remoteBytesRead -=
value
/**
+ * Time the task spent (in milliseconds) reading local shuffle blocks
(from the local disk).
+ */
+ private var _localReadTime: Long = _
+ def localReadTime = _localReadTime
+ private[spark] def incLocalReadTime(value: Long) = _localReadTime +=
value
+
+ /**
+ * Shuffle data that was read from the local disk (as opposed to from a
remote executor).
+ */
+ private var _localBytesRead: Long = _
+ def localBytesRead = _localBytesRead
+ private[spark] def incLocalBytesRead(value: Long) = _localBytesRead +=
value
+
+ /**
* Number of blocks fetched in this shuffle by this task (remote or
local)
*/
def totalBlocksFetched = _remoteBlocksFetched + _localBlocksFetched
--- End diff --
To stay consistent, can you add def totalBytesRead = _remoteBytesRead +
_localBytesRead
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