From 5f94954bb45e86e4c869b2d5cdb93cf24e234331 Mon Sep 17 00:00:00 2001
From: Zhen Ye <chyezh@outlook.com>
Date: Mon, 13 Jan 2025 11:23:04 +0800
Subject: [PATCH] fix: data race when accessing field_ when retrieving (#39151)

issue: #39148

Signed-off-by: chyezh <chyezh@outlook.com>
---
 internal/core/src/segcore/SegmentSealedImpl.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/internal/core/src/segcore/SegmentSealedImpl.cpp b/internal/core/src/segcore/SegmentSealedImpl.cpp
index 1944ca1086..4ccf68267b 100644
--- a/internal/core/src/segcore/SegmentSealedImpl.cpp
+++ b/internal/core/src/segcore/SegmentSealedImpl.cpp
@@ -1591,7 +1591,11 @@ SegmentSealedImpl::bulk_subscript(
         return fill_with_empty(field_id, 0);
     }
 
-    auto column = fields_.at(field_id);
+    std::shared_ptr<SingleChunkColumnBase> column;
+    {
+        std::shared_lock lck(mutex_);
+        column = fields_.at(field_id);
+    }
     auto ret = fill_with_empty(field_id, count);
     if (column->IsNullable()) {
         auto dst = ret->mutable_valid_data()->mutable_data();