From 29e4860a33a5687cb79b6b22b2b8e01cfdd7505e Mon Sep 17 00:00:00 2001
From: Alexander Pucher <apucher@apache.org>
Date: Fri, 28 Jan 2022 15:50:58 -0800
Subject: [PATCH] java8 optional method

---
 .../java/org/apache/pinot/core/util/ListenerConfigUtil.java     | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pinot-core/src/main/java/org/apache/pinot/core/util/ListenerConfigUtil.java b/pinot-core/src/main/java/org/apache/pinot/core/util/ListenerConfigUtil.java
index 4b9ceb29d7a6..2c16d854cbbb 100644
--- a/pinot-core/src/main/java/org/apache/pinot/core/util/ListenerConfigUtil.java
+++ b/pinot-core/src/main/java/org/apache/pinot/core/util/ListenerConfigUtil.java
@@ -195,7 +195,7 @@ private static int getPort(String configuredPort) {
   private static String getProtocol(String configuredProtocol, String listenerName) {
     Optional<String> optProtocol =
         Optional.ofNullable(configuredProtocol).map(String::trim).filter(protocol -> !protocol.isEmpty());
-    if (optProtocol.isEmpty()) {
+    if (!optProtocol.isPresent()) {
       return Optional.of(listenerName).filter(SUPPORTED_PROTOCOLS::contains).orElseThrow(
           () -> new IllegalArgumentException("No protocol set for listener" + listenerName + " and '" + listenerName
               + "' is not a valid protocol either"));