From 128f340f4fd363e7c7de338f5535088131bf2969 Mon Sep 17 00:00:00 2001
From: Akira Ajisaka <aajisaka@apache.org>
Date: Fri, 28 Dec 2018 17:43:47 +0900
Subject: [PATCH] YARN-8894. Improve InMemoryPlan#toString. Contributed by
 BELUGA BEHR.

---
 .../yarn/server/resourcemanager/reservation/InMemoryPlan.java | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/reservation/InMemoryPlan.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/reservation/InMemoryPlan.java
index 49e07aac84..43be2a5f29 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/reservation/InMemoryPlan.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/reservation/InMemoryPlan.java
@@ -866,9 +866,9 @@ public boolean getMoveOnExpiry() {
   public String toString() {
     readLock.lock();
     try {
-      StringBuffer planStr = new StringBuffer("In-memory Plan: ");
+      StringBuilder planStr = new StringBuilder("In-memory Plan: ");
       planStr.append("Parent Queue: ").append(queueName)
-          .append("Total Capacity: ").append(totalCapacity).append("Step: ")
+          .append(" Total Capacity: ").append(totalCapacity).append(" Step: ")
           .append(step);
       for (ReservationAllocation reservation : getAllReservations()) {
         planStr.append(reservation);