igreenfield commented on a change in pull request #26624:
URL: https://github.com/apache/spark/pull/26624#discussion_r422842064
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File path: core/src/main/scala/org/apache/spark/util/ThreadUtils.scala
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@@ -130,7 +224,15 @@ private[spark] object ThreadUtils {
*/
def newDaemonCachedThreadPool(prefix: String): ThreadPoolExecutor = {
Review comment:
in my usecase I set the MDC in job-server so the driver will use it. but
without the MDCAware it will not work. so I don't understand what you want to
document.
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