From dc24c462dc3f5cbc9cca65c494d3b3254b525615 Mon Sep 17 00:00:00 2001
From: Weny Xu <wenymedia@gmail.com>
Date: Tue, 4 Mar 2025 02:41:27 +0800
Subject: [PATCH] fix: prevent failover of regions to the same peer (#5632)

---
 src/meta-srv/src/region/supervisor.rs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/meta-srv/src/region/supervisor.rs b/src/meta-srv/src/region/supervisor.rs
index c7d1c65312..4c3725d114 100644
--- a/src/meta-srv/src/region/supervisor.rs
+++ b/src/meta-srv/src/region/supervisor.rs
@@ -416,6 +416,12 @@ impl RegionSupervisor {
             )
             .await?;
         let to_peer = peers.remove(0);
+        if to_peer.id == from_peer.id {
+            warn!(
+                "Skip failover for region: {region_id}, from_peer: {from_peer}, trying to failover to the same peer."
+            );
+            return Ok(());
+        }
         let task = RegionMigrationProcedureTask {
             cluster_id,
             region_id,