Github user JoshRosen commented on a diff in the pull request:
https://github.com/apache/spark/pull/18008#discussion_r116875860
--- Diff: core/src/main/scala/org/apache/spark/executor/TaskMetrics.scala
---
@@ -200,32 +202,47 @@ class TaskMetrics private[spark] () extends
Serializable {
import InternalAccumulator._
- @transient private[spark] lazy val nameToAccums = LinkedHashMap(
--- End diff --
It looks like the use of `LinkedHashMap` was added by @cloud-fan in #12612.
As far as I can tell we don't actually rely on the ordering of the entries in
this map, so I didn't preserved the use of `LinkedHashMap`.
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