From 92bd989092e5b17b2573c627c27b0b6e58f14f84 Mon Sep 17 00:00:00 2001
From: zstack <zstack@lms-KVM>
Date: Tue, 12 May 2026 19:21:35 -0700
Subject: [PATCH] =?UTF-8?q?<fix>[host]:=20SystemTagCreator=20ignoreIfExist?=
 =?UTF-8?q?ing=20=E9=98=B2=E9=87=8D=E8=BF=9E=E6=A0=87=E7=AD=BE=E9=87=8D?=
 =?UTF-8?q?=E5=A4=8D?=
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updateHostConnectedTime 中 check-then-act 存在竞态窗口: 并发重连时
两线程同时读到 !tagExists, 第二个 SystemTagCreator.create() 因
unique=true 抛异常。设置 ignoreIfExisting=true 使重复创建静默跳过。

Resolves: ZSTAC-58237

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
---
 compute/src/main/java/org/zstack/compute/host/HostBase.java | 1 +
 1 file changed, 1 insertion(+)

diff --git a/compute/src/main/java/org/zstack/compute/host/HostBase.java b/compute/src/main/java/org/zstack/compute/host/HostBase.java
index 919d92631fc..2f105c947e6 100755
--- a/compute/src/main/java/org/zstack/compute/host/HostBase.java
+++ b/compute/src/main/java/org/zstack/compute/host/HostBase.java
@@ -1099,6 +1099,7 @@ private void updateHostConnectedTime(HostStatus hostStatus) {
             creator.setTagByTokens(Collections.singletonMap(token, connectedTime));
             creator.inherent = false;
             creator.recreate = false;
+            creator.ignoreIfExisting = true;
             creator.create();
             return;
         }