cloud-fan commented on a change in pull request #26624:
URL: https://github.com/apache/spark/pull/26624#discussion_r427024809
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File path: core/src/main/scala/org/apache/spark/executor/Executor.scala
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@@ -320,7 +321,12 @@ private[spark] class Executor(
val taskId = taskDescription.taskId
val threadName = s"Executor task launch worker for task $taskId"
- private val taskName = taskDescription.name
+ val taskName = taskDescription.name
+ val mdcProperties = taskDescription.properties.asScala
+ .filter(_._1.startsWith("mdc.")).map { item =>
+ val key = item._1.substring(4)
+ (key, item._2)
+ }.toMap
Review comment:
we don't really need to look up the resulting map. Seems calling `toSeq`
and keeping it as `Seq[(String, String)]` is good enough.
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