From 5e33186cf660b48810149ac272cb4d31a14f8a57 Mon Sep 17 00:00:00 2001
From: overtrue <anzhengchao@gmail.com>
Date: Sun, 6 Sep 2026 03:21:19 +0800
Subject: [PATCH] fix(ecstore): preserve successor fsync group registration

(cherry picked from commit c7dfaad90526052e56c57dafffa4813bdcde46ca)
---
 crates/ecstore/src/disk/os.rs | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/crates/ecstore/src/disk/os.rs b/crates/ecstore/src/disk/os.rs
index c9df5b874..39ffeb955 100644
--- a/crates/ecstore/src/disk/os.rs
+++ b/crates/ecstore/src/disk/os.rs
@@ -735,7 +735,13 @@ impl DstDirFsyncGroupCommit {
     fn remove_idle_group(&self, group: &Arc<DstDirFsyncGroup>) {
         let mut registry = self.inner.lock();
         let group_state = group.inner.lock();
-        if !group_state.worker_running && group_state.pending.is_empty() {
+        if !group_state.worker_running
+            && group_state.pending.is_empty()
+            && registry
+                .groups
+                .get(&group.key)
+                .is_some_and(|registered| Arc::ptr_eq(registered, group))
+        {
             registry.groups.remove(&group.key);
         }
     }