diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/webapp/FairSchedulerAppsBlock.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/webapp/FairSchedulerAppsBlock.java
index 9650dfe..d721045 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/webapp/FairSchedulerAppsBlock.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/webapp/FairSchedulerAppsBlock.java
@@ -133,7 +133,10 @@ public FairSchedulerAppsBlock(ResourceManager rm, ViewContext ctx,
.append(appInfo.getFinishTime()).append("\",\"")
.append(appInfo.getState()).append("\",\"")
.append(appInfo.getFinalStatus()).append("\",\"")
- .append(appInfo.getRunningContainers()).append("\",\"")
+ .append(
+ appInfo.getRunningContainers() == -1 ? "N/A" : String
+ .valueOf(appInfo.getRunningContainers()))
+ .append("\",\"")
// Progress bar
.append("