YARN-3641. NodeManager: stopRecoveryStore() shouldn't be skipped when exceptions happen in stopping NM's sub-services. Contributed by Junping Du

(cherry picked from commit 711d77cc54a64b2c3db70bdacc6bf2245c896a4b)

(cherry picked from commit a81ad814610936a02e55964fbe08f7b33fe29b23)
(cherry picked from commit aa82b0684554be8d09f6fcd88826f167922280cc)

hadoop-yarn-project/CHANGES.txt

@@ -135,6 +135,9 @@ Release 2.6.1 - UNRELEASED
     YARN-3464. Race condition in LocalizerRunner kills localizer before 
     localizing all resources. (Zhihai Xu via kasha)
 
+    YARN-3641. NodeManager: stopRecoveryStore() shouldn't be skipped when
+    exceptions happen in stopping NM's sub-services. (Junping Du via jlowe)
+
 Release 2.6.0 - 2014-11-18
 
   INCOMPATIBLE CHANGES

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/NodeManager.java

@@ -269,9 +269,14 @@ public class NodeManager extends CompositeService
     if (isStopping.getAndSet(true)) {
       return;
     }
-    super.serviceStop();
-    stopRecoveryStore();
-    DefaultMetricsSystem.shutdown();
+    try {
+      super.serviceStop();
+      DefaultMetricsSystem.shutdown();
+    } finally {
+      // YARN-3641: NM's services stop get failed shouldn't block the
+      // release of NMLevelDBStore.
+      stopRecoveryStore();
+    }
   }
 
   public String getName() {