From e3bad09e2c09d1c60c9930b2e89e0814714f55da Mon Sep 17 00:00:00 2001
From: cinsttool <165570940+cinsttool@users.noreply.github.com>
Date: Tue, 2 Apr 2024 20:12:17 +0800
Subject: [PATCH] Fix container inefficiencies in FieldInfos.java (#13254)

---
 .../core/src/java/org/apache/lucene/index/FieldInfos.java   | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/lucene/core/src/java/org/apache/lucene/index/FieldInfos.java b/lucene/core/src/java/org/apache/lucene/index/FieldInfos.java
index 56ea002db476..f0fbb09cf000 100644
--- a/lucene/core/src/java/org/apache/lucene/index/FieldInfos.java
+++ b/lucene/core/src/java/org/apache/lucene/index/FieldInfos.java
@@ -24,7 +24,6 @@
 import static org.apache.lucene.index.FieldInfo.verifySameVectorOptions;
 
 import java.util.ArrayList;
-import java.util.Arrays;
 import java.util.Collection;
 import java.util.Collections;
 import java.util.HashMap;
@@ -158,7 +157,7 @@ public FieldInfos(FieldInfo[] infos) {
     this.softDeletesField = softDeletesField;
     this.parentField = parentField;
 
-    List<FieldInfo> valuesTemp = new ArrayList<>();
+    List<FieldInfo> valuesTemp = new ArrayList<>(infos.length);
     byNumber = new FieldInfo[size];
     for (int i = 0; i < size; i++) {
       byNumber[i] = byNumberTemp[i];
@@ -166,8 +165,7 @@ public FieldInfos(FieldInfo[] infos) {
         valuesTemp.add(byNumberTemp[i]);
       }
     }
-    values =
-        Collections.unmodifiableCollection(Arrays.asList(valuesTemp.toArray(new FieldInfo[0])));
+    values = Collections.unmodifiableCollection(valuesTemp);
   }
 
   /**