cloud-fan commented on a change in pull request #26624:
URL: https://github.com/apache/spark/pull/26624#discussion_r420666145
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File path: core/src/main/scala/org/apache/spark/util/ThreadUtils.scala
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@@ -157,23 +259,23 @@ private[spark] object ThreadUtils {
*/
def newDaemonFixedThreadPool(nThreads: Int, prefix: String):
ThreadPoolExecutor = {
val threadFactory = namedThreadFactory(prefix)
- Executors.newFixedThreadPool(nThreads,
threadFactory).asInstanceOf[ThreadPoolExecutor]
+ MDCAwareThreadPoolExecutor.newFixedThreadPool(nThreads, threadFactory)
Review comment:
Do you use open source Spark or your own fork?
It's hard to convince the reviewers that the change is necessary, without
clearly pointing out where we create these thread pools at executor side. Can
you investigate further?
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