From 40514587acafec5bb97bb99a0875d433fd426a2c Mon Sep 17 00:00:00 2001
From: Carpenter Lee <hooleeucas@163.com>
Date: Wed, 8 Aug 2018 14:33:13 +0800
Subject: [PATCH] Set SystemRule's threshold to zero is allowed.

---
 .../csp/sentinel/slots/system/SystemRuleManager.java      | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/sentinel-core/src/main/java/com/alibaba/csp/sentinel/slots/system/SystemRuleManager.java b/sentinel-core/src/main/java/com/alibaba/csp/sentinel/slots/system/SystemRuleManager.java
index 21f6ee4f..d5a8ccc7 100755
--- a/sentinel-core/src/main/java/com/alibaba/csp/sentinel/slots/system/SystemRuleManager.java
+++ b/sentinel-core/src/main/java/com/alibaba/csp/sentinel/slots/system/SystemRuleManager.java
@@ -226,24 +226,24 @@ public class SystemRuleManager {
         boolean checkStatus = false;
         // 首先判断是否有效
 
-        if (rule.getHighestSystemLoad() > 0) {
+        if (rule.getHighestSystemLoad() >= 0) {
             highestSystemLoad = Math.min(highestSystemLoad, rule.getHighestSystemLoad());
             highestSystemLoadIsSet = true;
             checkStatus = true;
         }
 
-        if (rule.getAvgRt() > 0) {
+        if (rule.getAvgRt() >= 0) {
             maxRt = Math.min(maxRt, rule.getAvgRt());
             maxRtIsSet = true;
             checkStatus = true;
         }
-        if (rule.getMaxThread() > 0) {
+        if (rule.getMaxThread() >= 0) {
             maxThread = Math.min(maxThread, rule.getMaxThread());
             maxThreadIsSet = true;
             checkStatus = true;
         }
 
-        if (rule.getQps() > 0) {
+        if (rule.getQps() >= 0) {
             qps = Math.min(qps, rule.getQps());
             qpsIsSet = true;
             checkStatus = true;