From 3e3b088856b611ce47e360e1b01b7cd23c65cd67 Mon Sep 17 00:00:00 2001
From: Rohith Sharma K S <rohithsharmaks@apache.org>
Date: Tue, 23 Oct 2018 12:58:41 +0530
Subject: [PATCH] YARN-8826. Fix lingering timeline collector after serviceStop
 in TimelineCollectorManager. Contributed by Prabha Manepalli.

(cherry picked from commit 0b62983c5a9361eb832784f134f140f9926c9ec6)
---
 .../timelineservice/collector/TimelineCollectorManager.java     | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/main/java/org/apache/hadoop/yarn/server/timelineservice/collector/TimelineCollectorManager.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/main/java/org/apache/hadoop/yarn/server/timelineservice/collector/TimelineCollectorManager.java
index 7909a2e82f6..d59b2e072d0 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/main/java/org/apache/hadoop/yarn/server/timelineservice/collector/TimelineCollectorManager.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/main/java/org/apache/hadoop/yarn/server/timelineservice/collector/TimelineCollectorManager.java
@@ -220,7 +220,7 @@ public class TimelineCollectorManager extends CompositeService {
 
   @Override
   protected void serviceStop() throws Exception {
-    if (collectors != null && collectors.size() > 1) {
+    if (collectors != null && collectors.size() > 0) {
       synchronized (collectors) {
         for (TimelineCollector c : collectors.values()) {
           c.serviceStop();