From 3536f7f7c27139e5cdec791f86bab4d1d5593e3a Mon Sep 17 00:00:00 2001
From: Ignacio Vera <iverase@gmail.com>
Date: Tue, 15 Sep 2020 08:34:22 +0200
Subject: [PATCH] Initialize BitArray storage as number of bits (#62327)
 (#62354)

---
 .../src/main/java/org/elasticsearch/common/util/BitArray.java | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/server/src/main/java/org/elasticsearch/common/util/BitArray.java b/server/src/main/java/org/elasticsearch/common/util/BitArray.java
index c7a2789f2f1..e938862a47c 100644
--- a/server/src/main/java/org/elasticsearch/common/util/BitArray.java
+++ b/server/src/main/java/org/elasticsearch/common/util/BitArray.java
@@ -34,11 +34,11 @@ public final class BitArray implements Releasable {
 
     /**
      * Create the {@linkplain BitArray}.
-     * @param initialSize the initial size of underlying storage.
+     * @param initialSize the initial size of underlying storage expressed in bits.
      */
     public BitArray(long initialSize, BigArrays bigArrays) {
         this.bigArrays = bigArrays;
-        this.bits = bigArrays.newLongArray(initialSize, true);
+        this.bits = bigArrays.newLongArray(wordNum(initialSize) + 1, true);
     }
 
     /**