From 9e4d78a9b0ddcfc12c9da4341753a4dd4bbd6d07 Mon Sep 17 00:00:00 2001
From: feynmanlin <feynmanlin@tencent.com>
Date: Thu, 27 May 2021 17:44:19 +0800
Subject: [PATCH] Fix repeated iterator generation (#10722)

### Motivation
Fix repeated iterator generation

(cherry picked from commit e67802420d23a9405c6efe4e35c497d19e471109)
---
 .../apache/pulsar/common/util/collections/LongPairRangeSet.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pulsar-common/src/main/java/org/apache/pulsar/common/util/collections/LongPairRangeSet.java b/pulsar-common/src/main/java/org/apache/pulsar/common/util/collections/LongPairRangeSet.java
index acd10d66d1cd5..b71a15dbc00ed 100644
--- a/pulsar-common/src/main/java/org/apache/pulsar/common/util/collections/LongPairRangeSet.java
+++ b/pulsar-common/src/main/java/org/apache/pulsar/common/util/collections/LongPairRangeSet.java
@@ -274,7 +274,7 @@ public boolean contains(long key, long value) {
         public Range<T> firstRange() {
             Iterator<Range<T>> iterable = set.asRanges().iterator();
             if (iterable.hasNext()) {
-                return set.asRanges().iterator().next();
+                return iterable.next();
             }
             return null;
         }