YARN-6536. TestAMRMClient.testAMRMClientWithSaslEncryption fails intermittently. Contributed by Jason Lowe.

(cherry picked from commit fdf5192bbbb3c81e5fb221758297605271139dc9)

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-client/src/test/java/org/apache/hadoop/yarn/client/api/impl/TestAMRMClient.java

@@ -1002,7 +1002,7 @@ public class TestAMRMClient {
         && receivedNMTokens.size() <= nodeCount);
     
     assertEquals(allocatedContainerCount, containersRequestedAny);
-    assertEquals(2, amClient.release.size());
+    assertEquals(2, releases.size());
     assertEquals(0, amClient.ask.size());
     
     // need to tell the AMRMClient that we dont need these resources anymore