YARN-5920. Fix deadlock in TestRMHA.testTransitionedToStandbyShouldNotHang. 
Contributed by Varun Saxena.


Project: http://git-wip-us.apache.org/repos/asf/hadoop/repo
Commit: http://git-wip-us.apache.org/repos/asf/hadoop/commit/e15c20ed
Tree: http://git-wip-us.apache.org/repos/asf/hadoop/tree/e15c20ed
Diff: http://git-wip-us.apache.org/repos/asf/hadoop/diff/e15c20ed

Branch: refs/heads/HADOOP-13345
Commit: e15c20edba1e9a23475ee6a4dfbadbdb8c1f668a
Parents: 1046852
Author: Rohith Sharma K S <[email protected]>
Authored: Thu Nov 24 12:18:38 2016 +0530
Committer: Rohith Sharma K S <[email protected]>
Committed: Thu Nov 24 12:18:38 2016 +0530

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 .../org/apache/hadoop/yarn/server/resourcemanager/TestRMHA.java   | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)
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http://git-wip-us.apache.org/repos/asf/hadoop/blob/e15c20ed/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/TestRMHA.java
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diff --git 
a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/TestRMHA.java
 
b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/TestRMHA.java
index 47c053c..000f4a4 100644
--- 
a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/TestRMHA.java
+++ 
b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/TestRMHA.java
@@ -465,8 +465,7 @@ public class TestRMHA {
 
     MemoryRMStateStore memStore = new MemoryRMStateStore() {
       @Override
-      public synchronized void updateApplicationState(
-          ApplicationStateData appState) {
+      public void updateApplicationState(ApplicationStateData appState) {
         notifyStoreOperationFailed(new StoreFencedException());
       }
     };


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