From 5b8e1c26d702e42b606265860c5e475970876aa5 Mon Sep 17 00:00:00 2001
From: Anu Engineer <aengineer@apache.org>
Date: Fri, 17 Jun 2016 23:29:57 -0700
Subject: [PATCH] HDFS-10541. Diskbalancer: When no actions in plan, error
 message says "Plan was generated more than 24 hours ago". Contributed by Anu
 Engineer.

---
 .../hadoop/hdfs/server/diskbalancer/command/PlanCommand.java    | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/diskbalancer/command/PlanCommand.java b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/diskbalancer/command/PlanCommand.java
index 76bdc9fa93c..c13399ba9f1 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/diskbalancer/command/PlanCommand.java
+++ b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/diskbalancer/command/PlanCommand.java
@@ -140,7 +140,7 @@ public class PlanCommand extends Command {
           .getBytes(StandardCharsets.UTF_8));
     }
 
-    if (plan != null) {
+    if (plan != null && plan.getVolumeSetPlans().size() > 0) {
       LOG.info("Writing plan to : {}", getOutputPath());
       try (FSDataOutputStream planStream = create(String.format(
           DiskBalancer.PLAN_TEMPLATE,