From ab78d62ebd3e7366ef6d1cd55b6f3ac782ade263 Mon Sep 17 00:00:00 2001
From: guoningshen <guoningshen@c4-hadoop-build04.bj>
Date: Thu, 19 Oct 2023 11:21:17 +0800
Subject: [PATCH] add some comment

---
 src/replica/replica.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/replica/replica.h b/src/replica/replica.h
index 9145362a44..f5baf0a92e 100644
--- a/src/replica/replica.h
+++ b/src/replica/replica.h
@@ -638,7 +638,9 @@ class replica : public serverlet<replica>, public ref_counter, public replica_ba
     bool _is_manual_emergency_checkpointing{false};
     bool _is_duplication_master{false};
     bool _is_duplication_follower{false};
-    std::atomic<bool> _is_duplication_plog_checking{false};
+    std::atomic<bool> _is_duplication_plog_checking{false}; // replica is finding some private logs
+                                                            // to load for duplication,avoid
+                                                            // unexpected plog gc
 
     // backup
     std::unique_ptr<replica_backup_manager> _backup_mgr;