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zhaoqingran pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/hertzbeat.git


The following commit(s) were added to refs/heads/master by this push:
     new 5eff094af6 [bugfix] fix potential StringIndexOutOfBoundsException 
(#3642)
5eff094af6 is described below

commit 5eff094af6aa3720286900c1061d195fd297f4d3
Author: DeleiGuo <[email protected]>
AuthorDate: Fri Aug 8 21:35:25 2025 +0800

    [bugfix] fix potential StringIndexOutOfBoundsException (#3642)
    
    Co-authored-by: Logic <[email protected]>
---
 .../java/org/apache/hertzbeat/collector/dispatch/MetricsCollect.java   | 3 +++
 1 file changed, 3 insertions(+)

diff --git 
a/hertzbeat-collector/hertzbeat-collector-collector/src/main/java/org/apache/hertzbeat/collector/dispatch/MetricsCollect.java
 
b/hertzbeat-collector/hertzbeat-collector-collector/src/main/java/org/apache/hertzbeat/collector/dispatch/MetricsCollect.java
index e60f1a4d6f..94b2022599 100644
--- 
a/hertzbeat-collector/hertzbeat-collector-collector/src/main/java/org/apache/hertzbeat/collector/dispatch/MetricsCollect.java
+++ 
b/hertzbeat-collector/hertzbeat-collector-collector/src/main/java/org/apache/hertzbeat/collector/dispatch/MetricsCollect.java
@@ -422,6 +422,9 @@ public class MetricsCollect implements Runnable, 
Comparable<MetricsCollect> {
      */
     private Object[] transformCal(String cal, Map<String, String> 
fieldAliasMap) {
         int splitIndex = cal.indexOf("=");
+        if (splitIndex < 0) {
+            return null;
+        }
         String field = cal.substring(0, splitIndex).trim();
         String expressionStr = cal.substring(splitIndex + 
1).trim().replace("\\#", "#");
         JexlExpression expression;


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