YARN-3604. Fixed ZKRMStateStore#removeApplication to also disable watch. Contributed Zhihai Xu

hadoop-yarn-project/CHANGES.txt

@@ -368,6 +368,9 @@ Release 2.8.0 - UNRELEASED
 
     YARN-3600. AM container link is broken (Naganarasimha G R via tgraves)
 
+    YARN-3604. Fixed ZKRMStateStore#removeApplication to also disable watch.
+    (zhihai xu via jianhe)
+
 Release 2.7.1 - UNRELEASED
 
   INCOMPATIBLE CHANGES

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/ZKRMStateStore.java

@@ -827,8 +827,8 @@ public class ZKRMStateStore extends RMStateStore {
   public synchronized void removeApplication(ApplicationId removeAppId)
       throws Exception {
     String appIdRemovePath = getNodePath(rmAppRoot, removeAppId.toString());
-    if (existsWithRetries(appIdRemovePath, true) != null) {
-      deleteWithRetries(appIdRemovePath, true);
+    if (existsWithRetries(appIdRemovePath, false) != null) {
+      deleteWithRetries(appIdRemovePath, false);
     }
   }