From ff7c2eda34c2c40ad71b50df6462a661bd213fbd Mon Sep 17 00:00:00 2001
From: bibinchundatt <bibinchundatt@apache.org>
Date: Tue, 24 Jul 2018 16:17:20 +0530
Subject: [PATCH] YARN-8548. AllocationRespose proto setNMToken initBuilder not
 done. Contributed by Bilwa S T.

---
 .../impl/pb/AllocateResponsePBImpl.java       |  1 +
 .../resourcemanager/recovery/TestProtos.java  | 20 +++++++++++++++++++
 2 files changed, 21 insertions(+)

diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/api/protocolrecords/impl/pb/AllocateResponsePBImpl.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/api/protocolrecords/impl/pb/AllocateResponsePBImpl.java
index 3ab55637bf..8df56b82f0 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/api/protocolrecords/impl/pb/AllocateResponsePBImpl.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/api/protocolrecords/impl/pb/AllocateResponsePBImpl.java
@@ -347,6 +347,7 @@ public synchronized void setCompletedContainersStatuses(
 
   @Override
   public synchronized void setNMTokens(List<NMToken> nmTokens) {
+    maybeInitBuilder();
     if (nmTokens == null || nmTokens.isEmpty()) {
       if (this.nmTokens != null) {
         this.nmTokens.clear();
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/TestProtos.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/TestProtos.java
index cc96412068..d42b411a85 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/TestProtos.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/TestProtos.java
@@ -18,7 +18,15 @@
 
 package org.apache.hadoop.yarn.server.resourcemanager.recovery;
 
+import static org.junit.Assert.*;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.apache.hadoop.yarn.api.protocolrecords.impl.pb.AllocateResponsePBImpl;
+import org.apache.hadoop.yarn.api.records.NMToken;
 import org.apache.hadoop.yarn.proto.YarnServerResourceManagerRecoveryProtos.EpochProto;
+import org.apache.hadoop.yarn.proto.YarnServiceProtos.AllocateResponseProto;
 import org.junit.Assert;
 import org.junit.Test;
 
@@ -33,4 +41,16 @@ public void testProtoCanBePrinted() throws Exception {
     String protoString = proto.toString();
     Assert.assertNotNull(protoString);
   }
+
+  @Test
+  public void testProtoAllocateResponse() {
+    AllocateResponseProto proto = AllocateResponseProto.getDefaultInstance();
+    AllocateResponsePBImpl alloc = new AllocateResponsePBImpl(proto);
+    List<NMToken> nmTokens = new ArrayList<NMToken>();
+    try {
+      alloc.setNMTokens(nmTokens);
+    } catch (Exception ex) {
+      fail();
+    }
+  }
 }