From 83e1d5d7bf7eebbeea0d62272db13fe17eb24b5d Mon Sep 17 00:00:00 2001
From: "navis.ryu" <navis@apache.org>
Date: Tue, 15 Mar 2016 08:39:07 +0900
Subject: [PATCH] Add hint message for missing
 `druid.selectors.coordinator.serviceName`

---
 .../java/io/druid/client/coordinator/CoordinatorClient.java     | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/server/src/main/java/io/druid/client/coordinator/CoordinatorClient.java b/server/src/main/java/io/druid/client/coordinator/CoordinatorClient.java
index 0cd6f4e139e..85661614fa0 100644
--- a/server/src/main/java/io/druid/client/coordinator/CoordinatorClient.java
+++ b/server/src/main/java/io/druid/client/coordinator/CoordinatorClient.java
@@ -105,7 +105,7 @@ public class CoordinatorClient
     try {
       final Server instance = selector.pick();
       if (instance == null) {
-        throw new ISE("Cannot find instance of coordinator");
+        throw new ISE("Cannot find instance of coordinator.. Did you set `druid.selectors.coordinator.serviceName`?");
       }
 
       return new URI(