Github user vanzin commented on a diff in the pull request: https://github.com/apache/spark/pull/5664#discussion_r29176635 --- Diff: core/src/test/scala/org/apache/spark/ui/UISuite.scala --- @@ -101,6 +125,25 @@ class UISuite extends FunSuite { } } + test("jetty with https binds to port 0 correctly") { + val sparkConf = new SparkConf() + .set("spark.ui.https.enabled", "false") + .set("spark.ui.https.keyStore", "./src/test/resources/spark.keystore") + .set("spark.ui.https.keyStorePassword", "123456") + .set("spark.ui.https.keyPassword", "123456") + val serverInfo = JettyUtils.startJettyServer( + "0.0.0.0", 0, Seq[ServletContextHandler](), sparkConf) + val server = serverInfo.server + val boundPort = serverInfo.boundPort + assert(server.getState === "STARTED") + assert(boundPort != 0) + Try { new ServerSocket(boundPort) } match { + case Success(s) => fail("Port %s doesn't seem used by jetty server".format(boundPort)) + case Failure(e) => + } + serverInfo.server.stop() --- End diff -- Same.
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