dongjoon-hyun commented on code in PR #48923:
URL: https://github.com/apache/spark/pull/48923#discussion_r1852764012
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core/src/main/scala/org/apache/spark/deploy/rest/RestSubmissionServer.scala:
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@@ -92,6 +94,12 @@ private[spark] abstract class RestSubmissionServer(
*/
private def doStart(startPort: Int): (Server, Int) = {
val threadPool = new QueuedThreadPool
+ if (Utils.isJavaVersionAtLeast21 &&
masterConf.get(MASTER_REST_SERVER_VIRTUAL_THREADS)) {
+ val newVirtualThreadPerTaskExecutor =
+ classOf[Executors].getMethod("newVirtualThreadPerTaskExecutor")
+ val service =
newVirtualThreadPerTaskExecutor.invoke(null).asInstanceOf[ExecutorService]
+ threadPool.setVirtualThreadsExecutor(service)
Review Comment:
Yes, AFAIK, this is orthogonally handled in Jetty layer, @viirya .
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