From ce0fa2a6a6e47eefc21eb52cea2bcae436f1f676 Mon Sep 17 00:00:00 2001
From: Zhang Chao <80152403@qq.com>
Date: Wed, 7 Feb 2024 20:14:01 +0800
Subject: [PATCH] Fix NPE in TestReqOptSumScorer.testFilterRandomRareOpt #13069

---
 .../src/java/org/apache/lucene/tests/search/CheckHits.java     | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lucene/test-framework/src/java/org/apache/lucene/tests/search/CheckHits.java b/lucene/test-framework/src/java/org/apache/lucene/tests/search/CheckHits.java
index 217bd834d9e..9d708339d51 100644
--- a/lucene/test-framework/src/java/org/apache/lucene/tests/search/CheckHits.java
+++ b/lucene/test-framework/src/java/org/apache/lucene/tests/search/CheckHits.java
@@ -733,6 +733,9 @@ public class CheckHits {
         assertTrue(s2 == null || s2.iterator().nextDoc() == DocIdSetIterator.NO_MORE_DOCS);
         continue;
       }
+      if (s2 == null) {
+        continue;
+      }
       TwoPhaseIterator twoPhase1 = s1.twoPhaseIterator();
       TwoPhaseIterator twoPhase2 = s2.twoPhaseIterator();
       DocIdSetIterator approx1 = twoPhase1 == null ? s1.iterator() : twoPhase1.approximation();