From 67b9a739feca9e3d2b3a8d9b7a4262c6da8f54c5 Mon Sep 17 00:00:00 2001
From: matst80 <mats.tornberg@gmail.com>
Date: Mon, 13 Oct 2025 22:50:09 +0200
Subject: [PATCH] Update simple_grain_pool.go

---
 pkg/actor/simple_grain_pool.go | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/pkg/actor/simple_grain_pool.go b/pkg/actor/simple_grain_pool.go
index 2722f86..9c8c2bc 100644
--- a/pkg/actor/simple_grain_pool.go
+++ b/pkg/actor/simple_grain_pool.go
@@ -144,8 +144,17 @@ func (p *SimpleGrainPool[V]) TakeOwnership(id uint64) {
 }
 
 func (p *SimpleGrainPool[V]) AddRemote(host string) (Host, error) {
-	if host == "" || host == p.hostname || p.IsKnown(host) {
-		return nil, fmt.Errorf("invalid host")
+	if host == "" {
+		return nil, fmt.Errorf("host is empty")
+	}
+	if host == p.hostname {
+		return nil, fmt.Errorf("same host, this should not happen")
+	}
+	p.remoteMu.RLock()
+	existing, found := p.remoteHosts[host]
+	p.remoteMu.RUnlock()
+	if found {
+		return existing, nil
 	}
 
 	remote, err := p.spawnHost(host)