Github user hayashidac commented on a diff in the pull request: https://github.com/apache/spark/pull/15652#discussion_r85343771 --- Diff: core/src/main/scala/org/apache/spark/ui/JettyUtils.scala --- @@ -308,14 +308,22 @@ private[spark] object JettyUtils extends Logging { sslOptions.createJettySslContextFactory().foreach { factory => // If the new port wraps around, do not try a privileged port. + + require(sslOptions.port == 0 || (1024 <= sslOptions.port && sslOptions.port < 65536)) + val securePort = if (currentPort != 0) { - (currentPort + 400 - 1024) % (65536 - 1024) + 1024 + if (1024 < sslOptions.port && sslOptions.port < 65536) { + sslOptions.port + } else { + (currentPort + 400 - 1024) % (65536 - 1024) + 1024 + } } else { 0 } val scheme = "https" - // Create a connector on port securePort to listen for HTTPS requests + // Create a connector on port securePort to listen for HTTPS requestswork. --- End diff -- Sorry, I rebased this change.
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