From e4adb826a91f7071cef9706972c76c7c3fc15e5f Mon Sep 17 00:00:00 2001
From: airborne12 <airborne08@gmail.com>
Date: Tue, 14 May 2024 16:43:36 +0800
Subject: [PATCH] [Fix](index writer) fix docWriter is null, when reenter close
 (#214)

---
 src/core/CLucene/index/IndexWriter.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/core/CLucene/index/IndexWriter.cpp b/src/core/CLucene/index/IndexWriter.cpp
index e2e6ae7d73d..8bc3a934553 100644
--- a/src/core/CLucene/index/IndexWriter.cpp
+++ b/src/core/CLucene/index/IndexWriter.cpp
@@ -535,7 +535,10 @@ void IndexWriter::closeInternal(bool waitForMerges) {
     try {
         if (infoStream != NULL)
             message(string("now flush at close"));
-
+        // if docWriter is nullptr, maybe it's been flushed already
+        if (docWriter == nullptr) {
+            return;
+        }
         docWriter->close();
 
         // Only allow a _CLNEW merge to be triggered if we are