From b65c9bd134940f56fcbb966caacba34035c16660 Mon Sep 17 00:00:00 2001
From: Charles Allen <charles@allen-net.com>
Date: Thu, 1 Jun 2017 22:54:13 -0700
Subject: [PATCH] Make the Coordinator Cost Balancer thread naming human
 friendly

---
 .../java/io/druid/server/coordinator/DruidCoordinator.java | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/server/src/main/java/io/druid/server/coordinator/DruidCoordinator.java b/server/src/main/java/io/druid/server/coordinator/DruidCoordinator.java
index 4ca6333b3d38..ebee431345e3 100644
--- a/server/src/main/java/io/druid/server/coordinator/DruidCoordinator.java
+++ b/server/src/main/java/io/druid/server/coordinator/DruidCoordinator.java
@@ -88,7 +88,6 @@
 import java.util.Set;
 import java.util.concurrent.Callable;
 import java.util.concurrent.ConcurrentMap;
-import java.util.concurrent.Executors;
 import java.util.concurrent.ScheduledExecutorService;
 import java.util.concurrent.atomic.AtomicReference;
 
@@ -701,8 +700,10 @@ public void run()
           }
         }
 
-        balancerExec = MoreExecutors.listeningDecorator(
-                Executors.newFixedThreadPool(getDynamicConfigs().getBalancerComputeThreads()));
+        balancerExec = MoreExecutors.listeningDecorator(Execs.multiThreaded(
+            getDynamicConfigs().getBalancerComputeThreads(),
+            "coordinator-cost-balancer-%s"
+        ));
         BalancerStrategy balancerStrategy = factory.createBalancerStrategy(balancerExec);
 
         // Do coordinator stuff.