From fafd628f525edce31dc7c35a7576393b4787081b Mon Sep 17 00:00:00 2001
From: Jon Bratseth <bratseth@gmail.com>
Date: Tue, 12 Oct 2021 12:20:17 +0200
Subject: Don't try to copy files if just one config server

---
 config/src/main/java/com/yahoo/vespa/config/JRTConnectionPool.java | 1 +
 1 file changed, 1 insertion(+)

(limited to 'config/src/main')

diff --git a/config/src/main/java/com/yahoo/vespa/config/JRTConnectionPool.java b/config/src/main/java/com/yahoo/vespa/config/JRTConnectionPool.java
index 048c82b1bde..14385cbc90e 100644
--- a/config/src/main/java/com/yahoo/vespa/config/JRTConnectionPool.java
+++ b/config/src/main/java/com/yahoo/vespa/config/JRTConnectionPool.java
@@ -41,6 +41,7 @@ public class JRTConnectionPool implements ConnectionPool {
     }
 
     public JRTConnectionPool(ConfigSourceSet sourceSet, Supervisor supervisor) {
+        if (sourceSet.getSources().isEmpty()) throw new IllegalArgumentException("sourceSet cannot be empty");
         this.supervisor = supervisor;
         this.poolName = supervisor.transport().getName();
         addSources(sourceSet);
-- 
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