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From ka...@apache.org
Subject svn commit: r1614274 [2/3] - in /hadoop/common/branches/branch-2.5.0/hadoop-common-project: ./ hadoop-annotations/ hadoop-auth-examples/ hadoop-auth/ hadoop-common/ hadoop-common/src/main/docs/ hadoop-minikdc/ hadoop-nfs/
Date Tue, 29 Jul 2014 07:34:42 GMT
Modified: hadoop/common/branches/branch-2.5.0/hadoop-common-project/hadoop-common/src/main/docs/releasenotes.html
URL: http://svn.apache.org/viewvc/hadoop/common/branches/branch-2.5.0/hadoop-common-project/hadoop-common/src/main/docs/releasenotes.html?rev=1614274&r1=1614273&r2=1614274&view=diff
==============================================================================
--- hadoop/common/branches/branch-2.5.0/hadoop-common-project/hadoop-common/src/main/docs/releasenotes.html (original)
+++ hadoop/common/branches/branch-2.5.0/hadoop-common-project/hadoop-common/src/main/docs/releasenotes.html Tue Jul 29 07:34:40 2014
@@ -1,5 +1,5 @@
 <META http-equiv="Content-Type" content="text/html; charset=UTF-8">
-<title>Hadoop  2.4.1 Release Notes</title>
+<title>Hadoop  2.5.0 Release Notes</title>
 <STYLE type="text/css">
 	H1 {font-family: sans-serif}
 	H2 {font-family: sans-serif; margin-left: 7mm}
@@ -7,25599 +7,2795 @@
 </STYLE>
 </head>
 <body>
-<h1>Hadoop  2.4.1 Release Notes</h1>
+<h1>Hadoop  2.5.0 Release Notes</h1>
 These release notes include new developer and user-facing incompatibilities, features, and major improvements. 
 <a name="changes"/>
-<h2>Changes since Hadoop 2.4.0</h2>
+<h2>Changes since Hadoop 2.4.1</h2>
 <ul>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-2081">YARN-2081</a>.
-     Minor bug reported by Hong Zhiguo and fixed by Hong Zhiguo (applications/distributed-shell)<br>
-     <b>TestDistributedShell fails after YARN-1962</b><br>
-     <blockquote>java.lang.AssertionError: expected:&lt;1&gt; but was:&lt;0&gt;
-        at org.junit.Assert.fail(Assert.java:88)
-        at org.junit.Assert.failNotEquals(Assert.java:743)
-        at org.junit.Assert.assertEquals(Assert.java:118)
-        at org.junit.Assert.assertEquals(Assert.java:555)
-        at org.junit.Assert.assertEquals(Assert.java:542)
-        at org.apache.hadoop.yarn.applications.distributedshell.TestDistributedShell.testDSShell(TestDistributedShell.java:198)</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-2066">YARN-2066</a>.
-     Minor bug reported by Ted Yu and fixed by Hong Zhiguo <br>
-     <b>Wrong field is referenced in GetApplicationsRequestPBImpl#mergeLocalToBuilder()</b><br>
-     <blockquote>{code}
-    if (this.finish != null) {
-      builder.setFinishBegin(start.getMinimumLong());
-      builder.setFinishEnd(start.getMaximumLong());
-    }
-{code}
-this.finish should be referenced in the if block.</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-2053">YARN-2053</a>.
-     Major sub-task reported by Sumit Mohanty and fixed by Wangda Tan (resourcemanager)<br>
-     <b>Slider AM fails to restart: NPE in RegisterApplicationMasterResponseProto$Builder.addAllNmTokensFromPreviousAttempts</b><br>
-     <blockquote>Slider AppMaster restart fails with the following:
-{code}
-org.apache.hadoop.yarn.proto.YarnServiceProtos$RegisterApplicationMasterResponseProto$Builder.addAllNmTokensFromPreviousAttempts(YarnServiceProtos.java:2700)
-{code}</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-2016">YARN-2016</a>.
-     Major bug reported by Venkat Ranganathan and fixed by Junping Du (resourcemanager)<br>
-     <b>Yarn getApplicationRequest start time range is not honored</b><br>
-     <blockquote>When we query for the previous applications by creating an instance of GetApplicationsRequest and setting the start time range and application tag, we see that the start range provided is not honored and all applications with the tag are returned
-
-Attaching a reproducer.
-
-</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1986">YARN-1986</a>.
-     Critical bug reported by Jon Bringhurst and fixed by Hong Zhiguo <br>
-     <b>In Fifo Scheduler, node heartbeat in between creating app and attempt causes NPE</b><br>
-     <blockquote>After upgrade from 2.2.0 to 2.4.0, NPE on first job start.
-
--After RM was restarted, the job runs without a problem.-
-
-{noformat}
-19:11:13,441 FATAL ResourceManager:600 - Error in handling event type NODE_UPDATE to the scheduler
-java.lang.NullPointerException
-	at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fifo.FifoScheduler.assignContainers(FifoScheduler.java:462)
-	at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fifo.FifoScheduler.nodeUpdate(FifoScheduler.java:714)
-	at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fifo.FifoScheduler.handle(FifoScheduler.java:743)
-	at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fifo.FifoScheduler.handle(FifoScheduler.java:104)
-	at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$SchedulerEventDispatcher$EventProcessor.run(ResourceManager.java:591)
-	at java.lang.Thread.run(Thread.java:744)
-19:11:13,443  INFO ResourceManager:604 - Exiting, bbye..
-{noformat}</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1976">YARN-1976</a>.
-     Major bug reported by Yesha Vora and fixed by Junping Du <br>
-     <b>Tracking url missing http protocol for FAILED application</b><br>
-     <blockquote>Run yarn application -list -appStates FAILED,  It does not print http protocol name like FINISHED apps.
-
-{noformat}
--bash-4.1$ yarn application -list -appStates FINISHED,FAILED,KILLED
-14/04/15 23:55:07 INFO client.RMProxy: Connecting to ResourceManager at host
-Total number of applications (application-types: [] and states: [FINISHED, FAILED, KILLED]):4
-                Application-Id	    Application-Name	    Application-Type	      User	     Queue	             State	       Final-State	       Progress	                       Tracking-URL
-application_1397598467870_0004	           Sleep job	           MAPREDUCE	    hrt_qa	   default	          FINISHED	         SUCCEEDED	           100%	http://host:19888/jobhistory/job/job_1397598467870_0004
-application_1397598467870_0003	           Sleep job	           MAPREDUCE	    hrt_qa	   default	          FINISHED	         SUCCEEDED	           100%	http://host:19888/jobhistory/job/job_1397598467870_0003
-application_1397598467870_0002	           Sleep job	           MAPREDUCE	    hrt_qa	   default	            FAILED	            FAILED	           100%	host:8088/cluster/app/application_1397598467870_0002
-application_1397598467870_0001	          word count	           MAPREDUCE	    hrt_qa	   default	          FINISHED	         SUCCEEDED	           100%	http://host:19888/jobhistory/job/job_1397598467870_0001
-{noformat}
-
-It only prints 'host:8088/cluster/app/application_1397598467870_0002' instead 'http://host:8088/cluster/app/application_1397598467870_0002' </blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1975">YARN-1975</a>.
-     Major bug reported by Nathan Roberts and fixed by Mit Desai (resourcemanager)<br>
-     <b>Used resources shows escaped html in CapacityScheduler and FairScheduler page</b><br>
-     <blockquote>Used resources displays as &amp;amp;lt;memory:1111, vCores;&amp;amp;gt; with capacity scheduler
-
-</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1962">YARN-1962</a>.
-     Major sub-task reported by Mohammad Kamrul Islam and fixed by Mohammad Kamrul Islam <br>
-     <b>Timeline server is enabled by default</b><br>
-     <blockquote>Since Timeline server is not matured and secured yet, enabling  it by default might create some confusion.
-
-We were playing with 2.4.0 and found a lot of exceptions for distributed shell example related to connection refused error. Btw, we didn't run TS because it is not secured yet.
-
-Although it is possible to explicitly turn it off through yarn-site config. In my opinion,  this extra change for this new service is not worthy at this point,.  
-
-This JIRA is to turn it off by default.
-If there is an agreement, i can put a simple patch about this.
-
-{noformat}
-14/04/17 23:24:33 ERROR impl.TimelineClientImpl: Failed to get the response from the timeline server.
-com.sun.jersey.api.client.ClientHandlerException: java.net.ConnectException: Connection refused
-	at com.sun.jersey.client.urlconnection.URLConnectionClientHandler.handle(URLConnectionClientHandler.java:149)
-	at com.sun.jersey.api.client.Client.handle(Client.java:648)
-	at com.sun.jersey.api.client.WebResource.handle(WebResource.java:670)
-	at com.sun.jersey.api.client.WebResource.access$200(WebResource.java:74)
-	at com.sun.jersey.api.client.WebResource$Builder.post(WebResource.java:563)
-	at org.apache.hadoop.yarn.client.api.impl.TimelineClientImpl.doPostingEntities(TimelineClientImpl.java:131)
-	at org.apache.hadoop.yarn.client.api.impl.TimelineClientImpl.putEntities(TimelineClientImpl.java:104)
-	at org.apache.hadoop.yarn.applications.distributedshell.ApplicationMaster.publishApplicationAttemptEvent(ApplicationMaster.java:1072)
-	at org.apache.hadoop.yarn.applications.distributedshell.ApplicationMaster.run(ApplicationMaster.java:515)
-	at org.apache.hadoop.yarn.applications.distributedshell.ApplicationMaster.main(ApplicationMaster.java:281)
-Caused by: java.net.ConnectException: Connection refused
-	at java.net.PlainSocketImpl.socketConnect(Native Method)
-	at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339)
-	at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:198)
-	at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182)
-	at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
-	at java.net.Socket.connect(Socket.java:579)
-	at java.net.Socket.connect(Socket.java:528)
-	at sun.net.NetworkClient.doConnect(NetworkClient.java:180)
-	at sun.net.www.http.HttpClient.openServer(HttpClient.java:432)
-	at sun.net.www.http.HttpClient.openServer(HttpClient.java:527)
-	at sun.net.www.http.HttpClient.&lt;in14/04/17 23:24:33 ERROR impl.TimelineClientImpl: Failed to get the response from the timeline server.
-com.sun.jersey.api.client.ClientHandlerException: java.net.ConnectException: Connection refused
-	at com.sun.jersey.client.urlconnection.URLConnectionClientHandler.handle(URLConnectionClientHandler.java:149)
-	at com.sun.jersey.api.client.Client.handle(Client.java:648)
-	at com.sun.jersey.api.client.WebResource.handle(WebResource.java:670)
-	at com.sun.jersey.api.client.WebResource.access$200(WebResource.java:74)
-	at com.sun.jersey.api.client.WebResource$Builder.post(WebResource.java:563)
-	at org.apache.hadoop.yarn.client.api.impl.TimelineClientImpl.doPostingEntities(TimelineClientImpl.java:131)
-	at org.apache.hadoop.yarn.client.api.impl.TimelineClientImpl.putEntities(TimelineClientImpl.java:104)
-	at org.apache.hadoop.yarn.applications.distributedshell.ApplicationMaster.publishApplicationAttemptEvent(ApplicationMaster.java:1072)
-	at org.apache.hadoop.yarn.applications.distributedshell.ApplicationMaster.run(ApplicationMaster.java:515)
-	at org.apache.hadoop.yarn.applications.distributedshell.ApplicationMaster.main(ApplicationMaster.java:281)
-Caused by: java.net.ConnectException: Connection refused
-	at java.net.PlainSocketImpl.socketConnect(Native Method)
-	at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339)
-	at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:198)
-	at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182)
-	at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
-	at java.net.Socket.connect(Socket.java:579)
-	at java.net.Socket.connect(Socket.java:528)
-	at sun.net.NetworkClient.doConnect(NetworkClient.java:180)
-	at sun.net.www.http.HttpClient.openServer(HttpClient.java:432)
-	at sun.net.www.http.HttpClient.openServer(HttpClient.java:527)
-	at sun.net.www.http.HttpClient.&lt;init&gt;(HttpClient.java:211)
-	at sun.net.www.http.HttpClient.New(HttpClient.java:308)
-	at sun.net.www.http.HttpClient.New(HttpClient.java:326)
-	at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:996)
-	at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:932)
-	at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:850)
-	at sun.net.www.protocol.http.HttpURLConnection.getOutputStream(HttpURLConnection.java:1091)
-	at com.sun.jersey.client.urlconnection.URLConnectionClientHandler$1$1.getOutputStream(URLConnectionClientHandler.java:225)
-	at com.sun.jersey.api.client.CommittingOutputStream.commitWrite(CommittingOutputStream.java:117)
-	at com.sun.jersey.api.client.CommittingOutputStream.write(CommittingOutputStream.java:89)
-	at org.codehaus.jackson.impl.Utf8Generator._flushBuffer(Utf8Generator.java:1754)
-	at org.codehaus.jackson.impl.Utf8Generator.flush(Utf8Generator.java:1088)
-	at org.codehaus.jackson.map.ObjectMapper.writeValue(ObjectMapper.java:1354)
-	at org.codehaus.jackson.jaxrs.JacksonJsonProvider.writeTo(JacksonJsonProvider.java:527)
-	at com.sun.jersey.api.client.RequestWriter.writeRequestEntity(RequestWriter.java:300)
-	at com.sun.jersey.client.urlconnection.URLConnectionClientHandler._invoke(URLConnectionClientHandler.java:204)
-	at com.sun.jersey.client.urlconnection.URLConnectionClientHandler.handle(URLConnectionClientHandler.java:147)
-	... 9 moreit&gt;(HttpClient.java:211)
-	at sun.net.www.http.HttpClient.New(HttpClient.java:308)
-	at sun.net.www.http.HttpClient.New(HttpClient.java:326)
-	at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:996)
-	at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:932)
-	at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:850)
-	at sun.net.www.protocol.http.HttpURLConnection.getOutputStream(HttpURLConnection.java:1091)
-	at com.sun.jersey.client.urlconnection.URLConnectionClientHandler$1$1.getOutputStream(URLConnectionClientHandler.java:225)
-	at com.sun.jersey.api.client.CommittingOutputStream.commitWrite(CommittingOutputStream.java:117)
-	at com.sun.jersey.api.client.CommittingOutputStream.write(CommittingOutputStream.java:89)
-	at org.codehaus.jackson.impl.Utf8Generator._flushBuffer(Utf8Generator.java:1754)
-	at org.codehaus.jackson.impl.Utf8Generator.flush(Utf8Generator.java:1088)
-	at org.codehaus.jackson.map.ObjectMapper.writeValue(ObjectMapper.java:1354)
-	at org.codehaus.jackson.jaxrs.JacksonJsonProvider.writeTo(JacksonJsonProvider.java:527)
-	at com.sun.jersey.api.client.RequestWriter.writeRequestEntity(RequestWriter.java:300)
-	at com.sun.jersey.client.urlconnection.URLConnectionClientHandler._invoke(URLConnectionClientHandler.java:204)
-	at com.sun.jersey.client.urlconnection.URLConnectionClientHandler.handle(URLConnectionClientHandler.java:147)
-	... 9 more
-
-{noformat}
-</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1957">YARN-1957</a>.
-     Major sub-task reported by Carlo Curino and fixed by Carlo Curino (resourcemanager)<br>
-     <b>ProportionalCapacitPreemptionPolicy handling of corner cases...</b><br>
-     <blockquote>The current version of ProportionalCapacityPreemptionPolicy should be improved to deal with the following two scenarios:
-1) when rebalancing over-capacity allocations, it potentially preempts without considering the maxCapacity constraints of a queue (i.e., preempting possibly more than strictly necessary)
-2) a zero capacity queue is preempted even if there is no demand (coherent with old use of zero-capacity to disabled queues)
-
-The proposed patch fixes both issues, and introduce few new test cases.</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1947">YARN-1947</a>.
-     Major test reported by Jian He and fixed by Jian He <br>
-     <b>TestRMDelegationTokens#testRMDTMasterKeyStateOnRollingMasterKey is failing intermittently</b><br>
-     <blockquote>java.lang.AssertionError: null
-	at org.junit.Assert.fail(Assert.java:92)
-	at org.junit.Assert.assertTrue(Assert.java:43)
-	at org.junit.Assert.assertTrue(Assert.java:54)
-	at org.apache.hadoop.yarn.server.resourcemanager.security.TestRMDelegationTokens.testRMDTMasterKeyStateOnRollingMasterKey(TestRMDelegationTokens.java:117)</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1934">YARN-1934</a>.
-     Blocker bug reported by Rohith and fixed by Karthik Kambatla (resourcemanager)<br>
-     <b>Potential NPE in ZKRMStateStore caused by handling Disconnected event from ZK.</b><br>
-     <blockquote>For ZK disconnected event , zkClient is set to null. It is very much prone to throw NPE.
-
-{noformat}
-        case Disconnected:
-          LOG.info("ZKRMStateStore Session disconnected");
-          oldZkClient = zkClient;
-          zkClient = null;
-          break;
-{noformat}</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1933">YARN-1933</a>.
-     Major bug reported by Jian He and fixed by Jian He <br>
-     <b>TestAMRestart and TestNodeHealthService failing sometimes on Windows</b><br>
-     <blockquote>TestNodeHealthService failures:
-testNodeHealthScript(org.apache.hadoop.yarn.server.nodemanager.TestNodeHealthService)  Time elapsed: 1.405 sec  &lt;&lt;&lt; ERROR!
-java.io.FileNotFoundException: C:\Users\Administrator\Documents\hadoop-common\hadoop-yarn-project\hadoop-yarn\hadoop-yarn-server\hadoop-yarn-server-nodemanager\target\org.apache.hadoop.yarn.server.nodemanager.TestNodeHealthService-localDir\failingscript.cmd (The process cannot access the file because it is being used by another process)
-	at java.io.FileOutputStream.open(Native Method)
-	at java.io.FileOutputStream.&lt;init&gt;(FileOutputStream.java:221)
-	at java.io.FileOutputStream.&lt;init&gt;(FileOutputStream.java:171)
-	at org.apache.hadoop.yarn.server.nodemanager.TestNodeHealthService.writeNodeHealthScriptFile(TestNodeHealthService.java:82)
-	at org.apache.hadoop.yarn.server.nodemanager.TestNodeHealthService.testNodeHealthScript(TestNodeHealthService.java:154)
-
-testNodeHealthScriptShouldRun(org.apache.hadoop.yarn.server.nodemanager.TestNodeHealthService)  Time elapsed: 0 sec  &lt;&lt;&lt; ERROR!
-java.io.FileNotFoundException: C:\Users\Administrator\Documents\hadoop-common\hadoop-yarn-project\hadoop-yarn\hadoop-yarn-server\hadoop-yarn-server-nodemanager\target\org.apache.hadoop.yarn.server.nodemanager.TestNodeHealthService-localDir\failingscript.cmd (Access is denied)
-	at java.io.FileOutputStream.open(Native Method)
-	at java.io.FileOutputStream.&lt;init&gt;(FileOutputStream.java:221)
-	at java.io.FileOutputStream.&lt;init&gt;(FileOutputStream.java:171)
-	at org.apache.hadoop.yarn.server.nodemanager.TestNodeHealthService.writeNodeHealthScriptFile(TestNodeHealthService.java:82)
-	at org.apache.hadoop.yarn.server.nodemanager.TestNodeHealthService.testNodeHealthScriptShouldRun(TestNodeHealthService.java:103)
-</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1932">YARN-1932</a>.
-     Blocker bug reported by Mit Desai and fixed by Mit Desai <br>
-     <b>Javascript injection on the job status page</b><br>
-     <blockquote>Scripts can be injected into the job status page as the diagnostics field is
-not sanitized. Whatever string you set there will show up to the jobs page as it is ... ie. if you put any script commands, they will be executed in the browser of the user who is opening the page.
-
-We need escaping the diagnostic string in order to not run the scripts.</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1931">YARN-1931</a>.
-     Blocker bug reported by Thomas Graves and fixed by Sandy Ryza (applications)<br>
-     <b>Private API change in YARN-1824 in 2.4 broke compatibility with previous releases</b><br>
-     <blockquote>YARN-1824 broke compatibility with previous 2.x releases by changes the API's in org.apache.hadoop.yarn.util.Apps.{setEnvFromInputString,addToEnvironment}  The old api should be added back in.
-
-This affects any ApplicationMasters who were using this api.  It also breaks previously built MapReduce libraries from working with the new Yarn release as MR uses this api. </blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1929">YARN-1929</a>.
-     Blocker bug reported by Rohith and fixed by Karthik Kambatla (resourcemanager)<br>
-     <b>DeadLock in RM when automatic failover is enabled.</b><br>
-     <blockquote>Dead lock detected  in RM when automatic failover is enabled.
-
-
-{noformat}
-Found one Java-level deadlock:
-=============================
-"Thread-2":
-  waiting to lock monitor 0x00007fb514303cf0 (object 0x00000000ef153fd0, a org.apache.hadoop.ha.ActiveStandbyElector),
-  which is held by "main-EventThread"
-"main-EventThread":
-  waiting to lock monitor 0x00007fb514750a48 (object 0x00000000ef154020, a org.apache.hadoop.yarn.server.resourcemanager.EmbeddedElectorService),
-  which is held by "Thread-2"
-{noformat}</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1928">YARN-1928</a>.
-     Major bug reported by Zhijie Shen and fixed by Zhijie Shen <br>
-     <b>TestAMRMRPCNodeUpdates fails ocassionally</b><br>
-     <blockquote>{code}
-junit.framework.AssertionFailedError: expected:&lt;0&gt; but was:&lt;4&gt;
-	at junit.framework.Assert.fail(Assert.java:50)
-	at junit.framework.Assert.failNotEquals(Assert.java:287)
-	at junit.framework.Assert.assertEquals(Assert.java:67)
-	at junit.framework.Assert.assertEquals(Assert.java:199)
-	at junit.framework.Assert.assertEquals(Assert.java:205)
-	at org.apache.hadoop.yarn.server.resourcemanager.applicationsmanager.TestAMRMRPCNodeUpdates.testAMRMUnusableNodes(TestAMRMRPCNodeUpdates.java:136)
-{code}</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1926">YARN-1926</a>.
-     Major bug reported by Varun Vasudev and fixed by Varun Vasudev <br>
-     <b>DistributedShell unit tests fail on Windows</b><br>
-     <blockquote>Couple of unit tests for the DistributedShell fail on Windows - specifically testDSShellWithShellScript and testDSRestartWithPreviousRunningContainers </blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1924">YARN-1924</a>.
-     Critical bug reported by Arpit Gupta and fixed by Jian He <br>
-     <b>STATE_STORE_OP_FAILED happens when ZKRMStateStore tries to update app(attempt) before storing it</b><br>
-     <blockquote>Noticed on a HA cluster Both RM shut down with this error. </blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1920">YARN-1920</a>.
-     Major bug reported by Vinod Kumar Vavilapalli and fixed by Vinod Kumar Vavilapalli <br>
-     <b>TestFileSystemApplicationHistoryStore.testMissingApplicationAttemptHistoryData fails in windows</b><br>
-     <blockquote>Though this was only failing in Windows, after debugging, I realized that the test fails because we are leaking a file-handle in the history service.</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1914">YARN-1914</a>.
-     Major bug reported by Varun Vasudev and fixed by Varun Vasudev <br>
-     <b>Test TestFSDownload.testDownloadPublicWithStatCache fails on Windows</b><br>
-     <blockquote>The TestFSDownload.testDownloadPublicWithStatCache test in hadoop-yarn-common consistently fails on Windows environments.
-
-The root cause is that the test checks for execute permission for all users on every ancestor of the target directory. In windows, by default, group "Everyone" has no permissions on any directory in the install drive. It's unreasonable to expect this test to pass and we should skip it on Windows.</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1910">YARN-1910</a>.
-     Major bug reported by Xuan Gong and fixed by Xuan Gong <br>
-     <b>TestAMRMTokens fails on windows</b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1908">YARN-1908</a>.
-     Major bug reported by Tassapol Athiapinya and fixed by Vinod Kumar Vavilapalli (applications/distributed-shell)<br>
-     <b>Distributed shell with custom script has permission error.</b><br>
-     <blockquote>Create test1.sh having "pwd".
-
-Run this command as user1:
-hadoop jar /usr/lib/hadoop-yarn/hadoop-yarn-applications-distributedshell.jar -jar /usr/lib/hadoop-yarn/hadoop-yarn-applications-distributedshell.jar -shell_script test1.sh
-
-NM is run by yarn user. An exception is thrown because yarn user has no permissions on custom script in hdfs path. The custom script is created with distributed shell app.
-{code}
-Caused by: org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.security.AccessControlException): Permission denied: user=yarn, access=WRITE, inode="/user/user1/DistributedShell/70":user1:user1:drwxr-xr-x
-	at org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.checkFsPermission(FSPermissionChecker.java:265)
-{code}</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1907">YARN-1907</a>.
-     Major bug reported by Mit Desai and fixed by Mit Desai <br>
-     <b>TestRMApplicationHistoryWriter#testRMWritingMassiveHistory runs slow and intermittently fails</b><br>
-     <blockquote>The test has 10000 containers that it tries to cleanup.
-The cleanup has a timeout of 20000ms in which the test sometimes cannot do the cleanup completely and gives out an Assertion Failure.</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1905">YARN-1905</a>.
-     Trivial test reported by Chris Nauroth and fixed by Chris Nauroth (nodemanager)<br>
-     <b>TestProcfsBasedProcessTree must only run on Linux.</b><br>
-     <blockquote>The tests in {{TestProcfsBasedProcessTree}} only make sense on Linux, where the process tree calculations are based on reading the /proc file system.  Right now, not all of the individual tests are skipped when the OS is not Linux.  This patch will make it consistent.</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1903">YARN-1903</a>.
-     Major bug reported by Zhijie Shen and fixed by Zhijie Shen <br>
-     <b>Killing Container on NEW and LOCALIZING will result in exitCode and diagnostics not set</b><br>
-     <blockquote>The container status after stopping container is not expected.
-{code}
-java.lang.AssertionError: 4: 
-	at org.junit.Assert.fail(Assert.java:93)
-	at org.junit.Assert.assertTrue(Assert.java:43)
-	at org.apache.hadoop.yarn.client.api.impl.TestNMClient.testGetContainerStatus(TestNMClient.java:382)
-	at org.apache.hadoop.yarn.client.api.impl.TestNMClient.testContainerManagement(TestNMClient.java:346)
-	at org.apache.hadoop.yarn.client.api.impl.TestNMClient.testNMClient(TestNMClient.java:226)
-{code}</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1898">YARN-1898</a>.
-     Major sub-task reported by Yesha Vora and fixed by Xuan Gong (resourcemanager)<br>
-     <b>Standby RM's conf, stacks, logLevel, metrics, jmx and logs links are redirecting to Active RM</b><br>
-     <blockquote>Standby RM links /conf, /stacks, /logLevel, /metrics, /jmx is redirected to Active RM.
-
-It should not be redirected to Active RM</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1892">YARN-1892</a>.
-     Minor improvement reported by Siddharth Seth and fixed by Jian He (scheduler)<br>
-     <b>Excessive logging in RM</b><br>
-     <blockquote>Mostly in the CS I believe
-
-{code}
- INFO org.apache.hadoop.yarn.server.resourcemanager.scheduler.SchedulerApplicationAttempt: Application application_1395435468498_0011 reserved container container_1395435468498_0011_01_000213 on node host:  #containers=5 available=4096 used=20960, currently has 1 at priority 4; currentReservation 4096
-{code}
-
-{code}
-INFO org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue: hive2 usedResources: &lt;memory:20480, vCores:5&gt; clusterResources: &lt;memory:81920, vCores:16&gt; currentCapacity 0.25 required &lt;memory:4096, vCores:1&gt; potentialNewCapacity: 0.255 (  max-capacity: 0.25)
-{code}
-
-</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1883">YARN-1883</a>.
-     Major bug reported by Mit Desai and fixed by Mit Desai <br>
-     <b>TestRMAdminService fails due to inconsistent entries in UserGroups</b><br>
-     <blockquote>testRefreshUserToGroupsMappingsWithFileSystemBasedConfigurationProvider fails with the following error:
-{noformat}
-java.lang.AssertionError: null
-	at org.junit.Assert.fail(Assert.java:92)
-	at org.junit.Assert.assertTrue(Assert.java:43)
-	at org.junit.Assert.assertTrue(Assert.java:54)
-	at org.apache.hadoop.yarn.server.resourcemanager.TestRMAdminService.testRefreshUserToGroupsMappingsWithFileSystemBasedConfigurationProvider(TestRMAdminService.java:421)
-	at org.apache.hadoop.yarn.server.resourcemanager.TestRMAdminService.testOrder(TestRMAdminService.java:104)
-{noformat}
-
-Line Numbers will be inconsistent as I was testing to run it in a particular order. But the Line on which the failure occurs is
-{code}
-Assert.assertTrue(groupBefore.contains("test_group_A")
-        &amp;&amp; groupBefore.contains("test_group_B")
-        &amp;&amp; groupBefore.contains("test_group_C") &amp;&amp; groupBefore.size() == 3);
-{code}
-
-testRMInitialsWithFileSystemBasedConfigurationProvider() and
-testRefreshUserToGroupsMappingsWithFileSystemBasedConfigurationProvider()
-calls the function {{MockUnixGroupsMapping.updateGroups();}} which changes the list of userGroups.
-
-testRefreshUserToGroupsMappingsWithFileSystemBasedConfigurationProvider() tries to verify the groups before changing it and fails if testRMInitialsWithFileSystemBasedConfigurationProvider() already ran and made the changes.</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1861">YARN-1861</a>.
-     Blocker sub-task reported by Arpit Gupta and fixed by Karthik Kambatla (resourcemanager)<br>
-     <b>Both RM stuck in standby mode when automatic failover is enabled</b><br>
-     <blockquote>In our HA tests we noticed that the tests got stuck because both RM's got into standby state and no one became active.</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1837">YARN-1837</a>.
-     Major bug reported by Tsuyoshi OZAWA and fixed by Hong Zhiguo <br>
-     <b>TestMoveApplication.testMoveRejectedByScheduler randomly fails</b><br>
-     <blockquote>TestMoveApplication#testMoveRejectedByScheduler fails because of NullPointerException. It looks caused by unhandled exception handling at server-side.</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1750">YARN-1750</a>.
-     Major test reported by Ming Ma and fixed by Wangda Tan (nodemanager)<br>
-     <b>TestNodeStatusUpdater#testNMRegistration is incorrect in test case</b><br>
-     <blockquote>This test case passes. However, the test output log has
-
-java.lang.AssertionError: Number of applications should only be one! expected:&lt;1&gt; but was:&lt;2&gt;
-        at org.junit.Assert.fail(Assert.java:93)
-        at org.junit.Assert.failNotEquals(Assert.java:647)
-        at org.junit.Assert.assertEquals(Assert.java:128)
-        at org.junit.Assert.assertEquals(Assert.java:472)
-        at org.apache.hadoop.yarn.server.nodemanager.TestNodeStatusUpdater$MyResourceTracker.nodeHeartbeat(TestNodeStatusUpdater.java:267)
-        at org.apache.hadoop.yarn.server.nodemanager.NodeStatusUpdaterImpl$1.run(NodeStatusUpdaterImpl.java:469)
-        at java.lang.Thread.run(Thread.java:695)
-
-TestNodeStatusUpdater.java has invalid asserts.
-
-      } else if (heartBeatID == 3) {
-        // Checks on the RM end
-        Assert.assertEquals("Number of applications should only be one!", 1,
-            appToContainers.size());
-        Assert.assertEquals("Number of container for the app should be two!",
-            2, appToContainers.get(appId2).size());
-
-
-We should fix the assert and add more check to the test.
-
-
-</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1701">YARN-1701</a>.
-     Major sub-task reported by Gera Shegalov and fixed by Tsuyoshi OZAWA <br>
-     <b>Improve default paths of timeline store and generic history store</b><br>
-     <blockquote>When I enable AHS via yarn.ahs.enabled, the app history is still not visible in AHS webUI. This is due to NullApplicationHistoryStore as yarn.resourcemanager.history-writer.class. It would be good to have just one key to enable basic functionality.
-
-yarn.ahs.fs-history-store.uri uses {code}${hadoop.log.dir}{code}, which is local file system location. However, FileSystemApplicationHistoryStore uses DFS by default.  </blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1696">YARN-1696</a>.
-     Blocker sub-task reported by Karthik Kambatla and fixed by Tsuyoshi OZAWA (resourcemanager)<br>
-     <b>Document RM HA</b><br>
-     <blockquote>Add documentation for RM HA. Marking this a blocker for 2.4 as this is required to call RM HA Stable and ready for public consumption. </blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1281">YARN-1281</a>.
-     Major test reported by Karthik Kambatla and fixed by Tsuyoshi OZAWA (resourcemanager)<br>
-     <b>TestZKRMStateStoreZKClientConnections fails intermittently</b><br>
-     <blockquote>The test fails intermittently - haven't been able to reproduce the failure deterministically. </blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1201">YARN-1201</a>.
-     Minor bug reported by Nemon Lou and fixed by Wangda Tan (resourcemanager)<br>
-     <b>TestAMAuthorization fails with local hostname cannot be resolved</b><br>
-     <blockquote>When hostname is 158-1-131-10, TestAMAuthorization fails.
-{code}
-Running org.apache.hadoop.yarn.server.resourcemanager.TestAMAuthorization
-Tests run: 4, Failures: 0, Errors: 2, Skipped: 0, Time elapsed: 14.034 sec &lt;&lt;&lt; FAILURE! - in org.apache.hadoop.yarn.server.resourcemanager.TestAMAuthorization
-testUnauthorizedAccess[0](org.apache.hadoop.yarn.server.resourcemanager.TestAMAuthorization)  Time elapsed: 3.952 sec  &lt;&lt;&lt; ERROR!
-java.lang.NullPointerException: null
-        at org.apache.hadoop.yarn.server.resourcemanager.TestAMAuthorization.testUnauthorizedAccess(TestAMAuthorization.java:284)
-
-testUnauthorizedAccess[1](org.apache.hadoop.yarn.server.resourcemanager.TestAMAuthorization)  Time elapsed: 3.116 sec  &lt;&lt;&lt; ERROR!
-java.lang.NullPointerException: null
-        at org.apache.hadoop.yarn.server.resourcemanager.TestAMAuthorization.testUnauthorizedAccess(TestAMAuthorization.java:284)
-
-
-Results :
-
-Tests in error:
-  TestAMAuthorization.testUnauthorizedAccess:284 NullPointer
-  TestAMAuthorization.testUnauthorizedAccess:284 NullPointer
-
-Tests run: 4, Failures: 0, Errors: 2, Skipped: 0
-
-{code}</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/MAPREDUCE-5843">MAPREDUCE-5843</a>.
-     Major test reported by Varun Vasudev and fixed by Varun Vasudev <br>
-     <b>TestMRKeyValueTextInputFormat failing on Windows</b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/MAPREDUCE-5841">MAPREDUCE-5841</a>.
-     Major bug reported by Sangjin Lee and fixed by Sangjin Lee (mrv2)<br>
-     <b>uber job doesn't terminate on getting mapred job kill</b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/MAPREDUCE-5835">MAPREDUCE-5835</a>.
-     Critical bug reported by Ming Ma and fixed by Ming Ma <br>
-     <b>Killing Task might cause the job to go to ERROR state</b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/MAPREDUCE-5833">MAPREDUCE-5833</a>.
-     Major test reported by Zhijie Shen and fixed by Zhijie Shen <br>
-     <b>TestRMContainerAllocator fails ocassionally</b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/MAPREDUCE-5832">MAPREDUCE-5832</a>.
-     Major bug reported by Jian He and fixed by Vinod Kumar Vavilapalli <br>
-     <b>Few tests in TestJobClient fail on Windows</b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/MAPREDUCE-5830">MAPREDUCE-5830</a>.
-     Blocker bug reported by Jason Lowe and fixed by Akira AJISAKA <br>
-     <b>HostUtil.getTaskLogUrl is not backwards binary compatible with 2.3</b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/MAPREDUCE-5828">MAPREDUCE-5828</a>.
-     Major bug reported by Vinod Kumar Vavilapalli and fixed by Vinod Kumar Vavilapalli <br>
-     <b>TestMapReduceJobControl fails on JDK 7 + Windows</b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/MAPREDUCE-5827">MAPREDUCE-5827</a>.
-     Major bug reported by Zhijie Shen and fixed by Zhijie Shen <br>
-     <b>TestSpeculativeExecutionWithMRApp fails</b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/MAPREDUCE-5826">MAPREDUCE-5826</a>.
-     Major bug reported by Varun Vasudev and fixed by Varun Vasudev <br>
-     <b>TestHistoryServerFileSystemStateStoreService.testTokenStore fails in windows</b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/MAPREDUCE-5824">MAPREDUCE-5824</a>.
-     Major bug reported by Xuan Gong and fixed by Xuan Gong <br>
-     <b>TestPipesNonJavaInputFormat.testFormat fails in windows</b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/MAPREDUCE-5821">MAPREDUCE-5821</a>.
-     Major bug reported by Todd Lipcon and fixed by Todd Lipcon (performance , task)<br>
-     <b>IFile merge allocates new byte array for every value</b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/MAPREDUCE-5818">MAPREDUCE-5818</a>.
-     Major bug reported by Jian He and fixed by Jian He <br>
-     <b>hsadmin cmd is missing in mapred.cmd</b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/MAPREDUCE-5815">MAPREDUCE-5815</a>.
-     Blocker bug reported by Gera Shegalov and fixed by Akira AJISAKA (client , mrv2)<br>
-     <b>Fix NPE in TestMRAppMaster</b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/MAPREDUCE-5714">MAPREDUCE-5714</a>.
-     Major bug reported by Jinghui Wang and fixed by Jinghui Wang (test)<br>
-     <b>TestMRAppComponentDependencies causes surefire to exit without saying proper goodbye</b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/MAPREDUCE-3191">MAPREDUCE-3191</a>.
-     Trivial bug reported by Todd Lipcon and fixed by Chen He <br>
-     <b>docs for map output compression incorrectly reference SequenceFile</b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/HDFS-6527">HDFS-6527</a>.
-     Blocker bug reported by Kihwal Lee and fixed by Kihwal Lee <br>
-     <b>Edit log corruption due to defered INode removal</b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/HDFS-6411">HDFS-6411</a>.
-     Major bug reported by Zhongyi Xie and fixed by Brandon Li (nfs)<br>
-     <b>nfs-hdfs-gateway mount raises I/O error and hangs when a unauthorized user attempts to access it</b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/HDFS-6402">HDFS-6402</a>.
-     Trivial bug reported by Chris Nauroth and fixed by Chris Nauroth (namenode)<br>
-     <b>Suppress findbugs warning for failure to override equals and hashCode in FsAclPermission.</b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/HDFS-6397">HDFS-6397</a>.
-     Critical bug reported by Mohammad Kamrul Islam and fixed by Mohammad Kamrul Islam <br>
-     <b>NN shows inconsistent value in deadnode count </b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/HDFS-6362">HDFS-6362</a>.
-     Blocker bug reported by Arpit Agarwal and fixed by Arpit Agarwal (namenode)<br>
-     <b>InvalidateBlocks is inconsistent in usage of DatanodeUuid and StorageID</b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/HDFS-6361">HDFS-6361</a>.
-     Major bug reported by Yongjun Zhang and fixed by Yongjun Zhang (nfs)<br>
-     <b>TestIdUserGroup.testUserUpdateSetting failed due to out of range nfsnobody Id</b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/HDFS-6340">HDFS-6340</a>.
-     Blocker bug reported by Rahul Singhal and fixed by Rahul Singhal (datanode)<br>
-     <b>DN can't finalize upgrade</b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/HDFS-6329">HDFS-6329</a>.
-     Blocker bug reported by Kihwal Lee and fixed by Kihwal Lee <br>
-     <b>WebHdfs does not work if HA is enabled on NN but logical URI is not configured.</b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/HDFS-6326">HDFS-6326</a>.
-     Blocker bug reported by Daryn Sharp and fixed by Chris Nauroth (webhdfs)<br>
-     <b>WebHdfs ACL compatibility is broken</b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/HDFS-6325">HDFS-6325</a>.
-     Major bug reported by Konstantin Shvachko and fixed by Keith Pak (namenode)<br>
-     <b>Append should fail if the last block has insufficient number of replicas</b><br>
-     <blockquote>I have committed the fix to the trunk, branch-2, and branch-2.4 respectively. Thanks Keith!</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/HDFS-6313">HDFS-6313</a>.
-     Blocker bug reported by Daryn Sharp and fixed by Kihwal Lee (webhdfs)<br>
-     <b>WebHdfs may use the wrong NN when configured for multiple HA NNs</b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/HDFS-6245">HDFS-6245</a>.
-     Major bug reported by Arpit Gupta and fixed by Arpit Agarwal <br>
-     <b>datanode fails to start with a bad disk even when failed volumes is set</b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/HDFS-6236">HDFS-6236</a>.
-     Minor bug reported by Chris Nauroth and fixed by Chris Nauroth (namenode)<br>
-     <b>ImageServlet should use Time#monotonicNow to measure latency.</b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/HDFS-6235">HDFS-6235</a>.
-     Trivial bug reported by Chris Nauroth and fixed by Chris Nauroth (namenode , test)<br>
-     <b>TestFileJournalManager can fail on Windows due to file locking if tests run out of order.</b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/HDFS-6234">HDFS-6234</a>.
-     Trivial bug reported by Chris Nauroth and fixed by Chris Nauroth (datanode , test)<br>
-     <b>TestDatanodeConfig#testMemlockLimit fails on Windows due to invalid file path.</b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/HDFS-6232">HDFS-6232</a>.
-     Major bug reported by Stephen Chu and fixed by Akira AJISAKA (tools)<br>
-     <b>OfflineEditsViewer throws a NPE on edits containing ACL modifications</b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/HDFS-6231">HDFS-6231</a>.
-     Major bug reported by Chris Nauroth and fixed by Chris Nauroth (hdfs-client)<br>
-     <b>DFSClient hangs infinitely if using hedged reads and all eligible datanodes die.</b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/HDFS-6229">HDFS-6229</a>.
-     Major bug reported by Jing Zhao and fixed by Jing Zhao (ha)<br>
-     <b>Race condition in failover can cause RetryCache fail to work</b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/HDFS-6215">HDFS-6215</a>.
-     Minor bug reported by Kihwal Lee and fixed by Kihwal Lee <br>
-     <b>Wrong error message for upgrade</b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/HDFS-6209">HDFS-6209</a>.
-     Minor bug reported by Arpit Agarwal and fixed by Arpit Agarwal (test)<br>
-     <b>Fix flaky test TestValidateConfigurationSettings.testThatDifferentRPCandHttpPortsAreOK</b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/HDFS-6208">HDFS-6208</a>.
-     Major bug reported by Chris Nauroth and fixed by Chris Nauroth (datanode)<br>
-     <b>DataNode caching can leak file descriptors.</b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/HDFS-6206">HDFS-6206</a>.
-     Major bug reported by Tsz Wo Nicholas Sze and fixed by Tsz Wo Nicholas Sze <br>
-     <b>DFSUtil.substituteForWildcardAddress may throw NPE</b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/HDFS-6204">HDFS-6204</a>.
-     Minor bug reported by Tsz Wo Nicholas Sze and fixed by Tsz Wo Nicholas Sze (test)<br>
-     <b>TestRBWBlockInvalidation may fail</b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/HDFS-6198">HDFS-6198</a>.
-     Major bug reported by Chris Nauroth and fixed by Chris Nauroth (datanode)<br>
-     <b>DataNode rolling upgrade does not correctly identify current block pool directory and replace with trash on Windows.</b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/HDFS-6197">HDFS-6197</a>.
-     Minor bug reported by Chris Nauroth and fixed by Chris Nauroth (namenode)<br>
-     <b>Rolling upgrade rollback on Windows can fail attempting to rename edit log segment files to a destination that already exists.</b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/HDFS-6189">HDFS-6189</a>.
-     Major test reported by Chris Nauroth and fixed by Chris Nauroth (test)<br>
-     <b>Multiple HDFS tests fail on Windows attempting to use a test root path containing a colon.</b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/HDFS-4052">HDFS-4052</a>.
-     Minor improvement reported by Jing Zhao and fixed by Jing Zhao <br>
-     <b>BlockManager#invalidateWork should print logs outside the lock</b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/HDFS-2882">HDFS-2882</a>.
-     Major bug reported by Todd Lipcon and fixed by Vinayakumar B (datanode)<br>
-     <b>DN continues to start up, even if block pool fails to initialize</b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/HADOOP-10612">HADOOP-10612</a>.
-     Major bug reported by Brandon Li and fixed by Brandon Li (nfs)<br>
-     <b>NFS failed to refresh the user group id mapping table</b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/HADOOP-10562">HADOOP-10562</a>.
-     Critical bug reported by Suresh Srinivas and fixed by Suresh Srinivas <br>
-     <b>Namenode exits on exception without printing stack trace in AbstractDelegationTokenSecretManager</b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/HADOOP-10527">HADOOP-10527</a>.
-     Major bug reported by Kihwal Lee and fixed by Kihwal Lee <br>
-     <b>Fix incorrect return code and allow more retries on EINTR</b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/HADOOP-10522">HADOOP-10522</a>.
-     Critical bug reported by Kihwal Lee and fixed by Kihwal Lee <br>
-     <b>JniBasedUnixGroupMapping mishandles errors</b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/HADOOP-10490">HADOOP-10490</a>.
-     Minor bug reported by Chris Nauroth and fixed by Chris Nauroth (test)<br>
-     <b>TestMapFile and TestBloomMapFile leak file descriptors.</b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/HADOOP-10473">HADOOP-10473</a>.
-     Minor bug reported by Tsz Wo Nicholas Sze and fixed by Tsz Wo Nicholas Sze (test)<br>
-     <b>TestCallQueueManager is still flaky</b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/HADOOP-10466">HADOOP-10466</a>.
-     Minor improvement reported by Nicolas Liochon and fixed by Nicolas Liochon (security)<br>
-     <b>Lower the log level in UserGroupInformation</b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/HADOOP-10456">HADOOP-10456</a>.
-     Major bug reported by Nishkam Ravi and fixed by Nishkam Ravi (conf)<br>
-     <b>Bug in Configuration.java exposed by Spark (ConcurrentModificationException)</b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/HADOOP-10455">HADOOP-10455</a>.
-     Major bug reported by Tsz Wo Nicholas Sze and fixed by Tsz Wo Nicholas Sze (ipc)<br>
-     <b>When there is an exception, ipc.Server should first check whether it is an terse exception</b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/HADOOP-8826">HADOOP-8826</a>.
-     Minor bug reported by Robert Joseph Evans and fixed by Mit Desai <br>
-     <b>Docs still refer to 0.20.205 as stable line</b><br>
-     <blockquote></blockquote></li>
-</ul>
-</body></html>
-<META http-equiv="Content-Type" content="text/html; charset=UTF-8">
-<title>Hadoop  2.4.0 Release Notes</title>
-<STYLE type="text/css">
-	H1 {font-family: sans-serif}
-	H2 {font-family: sans-serif; margin-left: 7mm}
-	TABLE {margin-left: 7mm}
-</STYLE>
-</head>
-<body>
-<h1>Hadoop  2.4.0 Release Notes</h1>
-These release notes include new developer and user-facing incompatibilities, features, and major improvements. 
-<a name="changes"/>
-<h2>Changes since Hadoop 2.3.0</h2>
-<ul>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1893">YARN-1893</a>.
-     Blocker sub-task reported by Xuan Gong and fixed by Xuan Gong (resourcemanager)<br>
-     <b>Make ApplicationMasterProtocol#allocate AtMostOnce</b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1891">YARN-1891</a>.
-     Minor task reported by Varun Vasudev and fixed by Varun Vasudev <br>
-     <b>Document NodeManager health-monitoring</b><br>
-     <blockquote>Start documenting node manager starting with the health monitoring.</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1873">YARN-1873</a>.
-     Major bug reported by Mit Desai and fixed by Mit Desai <br>
-     <b>TestDistributedShell#testDSShell fails when the test cases are out of order</b><br>
-     <blockquote>testDSShell fails when the tests are run in random order. I see a cleanup issue here.
-
-{noformat}
-Tests run: 1, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 72.222 sec &lt;&lt;&lt; FAILURE! - in org.apache.hadoop.yarn.applications.distributedshell.TestDistributedShell
-testOrder(org.apache.hadoop.yarn.applications.distributedshell.TestDistributedShell)  Time elapsed: 44.127 sec  &lt;&lt;&lt; FAILURE!
-java.lang.AssertionError: expected:&lt;1&gt; but was:&lt;6&gt;
-	at org.junit.Assert.fail(Assert.java:93)
-	at org.junit.Assert.failNotEquals(Assert.java:647)
-	at org.junit.Assert.assertEquals(Assert.java:128)
-	at org.junit.Assert.assertEquals(Assert.java:472)
-	at org.junit.Assert.assertEquals(Assert.java:456)
-	at org.apache.hadoop.yarn.applications.distributedshell.TestDistributedShell.testDSShell(TestDistributedShell.java:204)
-	at org.apache.hadoop.yarn.applications.distributedshell.TestDistributedShell.testOrder(TestDistributedShell.java:134)
-
-
-Results :
-
-Failed tests: 
-  TestDistributedShell.testOrder:134-&gt;testDSShell:204 expected:&lt;1&gt; but was:&lt;6&gt;
-{noformat}
-
-The Line numbers will be little deviated because I was trying to reproduce the error by running the tests in specific order. But the Line that causes the assert fail is {{Assert.assertEquals(1, entitiesAttempts.getEntities().size());}}</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1867">YARN-1867</a>.
-     Blocker bug reported by Karthik Kambatla and fixed by Vinod Kumar Vavilapalli (resourcemanager)<br>
-     <b>NPE while fetching apps via the REST API</b><br>
-     <blockquote>We ran into the following NPE when fetching applications using the REST API:
-
-{noformat}
-INTERNAL_SERVER_ERROR
-java.lang.NullPointerException
-at org.apache.hadoop.yarn.server.security.ApplicationACLsManager.checkAccess(ApplicationACLsManager.java:104)
-at org.apache.hadoop.yarn.server.resourcemanager.webapp.RMWebServices.hasAccess(RMWebServices.java:123)
-at org.apache.hadoop.yarn.server.resourcemanager.webapp.RMWebServices.getApps(RMWebServices.java:418)
-{noformat}</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1866">YARN-1866</a>.
-     Blocker bug reported by Arpit Gupta and fixed by Jian He <br>
-     <b>YARN RM fails to load state store with delegation token parsing error</b><br>
-     <blockquote>In our secure Nightlies we saw exceptions in the RM log where it failed to parse the deletegation token.</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1863">YARN-1863</a>.
-     Blocker test reported by Ted Yu and fixed by Xuan Gong <br>
-     <b>TestRMFailover fails with 'AssertionError: null' </b><br>
-     <blockquote>This happened in Hadoop-Yarn-trunk - Build # 516 and can be reproduced:
-{code}
-testWebAppProxyInStandAloneMode(org.apache.hadoop.yarn.client.TestRMFailover)  Time elapsed: 5.834 sec  &lt;&lt;&lt; FAILURE!
-java.lang.AssertionError: null
-	at org.junit.Assert.fail(Assert.java:92)
-	at org.junit.Assert.assertTrue(Assert.java:43)
-	at org.junit.Assert.assertTrue(Assert.java:54)
-	at org.apache.hadoop.yarn.client.TestRMFailover.verifyExpectedException(TestRMFailover.java:250)
-	at org.apache.hadoop.yarn.client.TestRMFailover.testWebAppProxyInStandAloneMode(TestRMFailover.java:216)
-
-testEmbeddedWebAppProxy(org.apache.hadoop.yarn.client.TestRMFailover)  Time elapsed: 5.341 sec  &lt;&lt;&lt; FAILURE!
-java.lang.AssertionError: null
-	at org.junit.Assert.fail(Assert.java:92)
-	at org.junit.Assert.assertTrue(Assert.java:43)
-	at org.junit.Assert.assertTrue(Assert.java:54)
-	at org.apache.hadoop.yarn.client.TestRMFailover.verifyExpectedException(TestRMFailover.java:250)
-	at org.apache.hadoop.yarn.client.TestRMFailover.testEmbeddedWebAppProxy(TestRMFailover.java:241)
-{code}</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1859">YARN-1859</a>.
-     Major bug reported by Zhijie Shen and fixed by Zhijie Shen <br>
-     <b>WebAppProxyServlet will throw ApplicationNotFoundException if the app is no longer cached in RM</b><br>
-     <blockquote>WebAppProxyServlet checks null to determine whether the application is not found or not.
-{code}
- ApplicationReport applicationReport = getApplicationReport(id);
-      if(applicationReport == null) {
-        LOG.warn(req.getRemoteUser()+" Attempting to access "+id+
-            " that was not found");
-{code}
-However, WebAppProxyServlet calls AppReportFetcher, which consequently calls ClientRMService. When application is not found, ClientRMService throws ApplicationNotFoundException. Therefore, in WebAppProxyServlet, the following logic to create the tracking url for a non-cached app will no longer be in use.</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1855">YARN-1855</a>.
-     Critical test reported by Ted Yu and fixed by Zhijie Shen <br>
-     <b>TestRMFailover#testRMWebAppRedirect fails in trunk</b><br>
-     <blockquote>From https://builds.apache.org/job/Hadoop-Yarn-trunk/514/console :
-{code}
-testRMWebAppRedirect(org.apache.hadoop.yarn.client.TestRMFailover)  Time elapsed: 5.39 sec  &lt;&lt;&lt; ERROR!
-java.lang.NullPointerException: null
-	at org.apache.hadoop.yarn.client.TestRMFailover.testRMWebAppRedirect(TestRMFailover.java:269)
-{code}</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1854">YARN-1854</a>.
-     Blocker test reported by Mit Desai and fixed by Rohith <br>
-     <b>Race condition in TestRMHA#testStartAndTransitions</b><br>
-     <blockquote>There is race in test.
-TestRMHA#testStartAndTransitions calls verifyClusterMetrics() immediately after application is submitted, but QueueMetrics are updated after app attempt is sheduled. Calling verifyClusterMetrics() without verifying app attempt is in Scheduled state cause random test failures.
- MockRM.submitApp() return when application is in ACCEPTED, but QueueMetrics updated at APP_ATTEMPT_ADDED event. There is high chance of getting queue metrics before app attempt is Scheduled.
-
-
-
-
-{noformat}
-testStartAndTransitions(org.apache.hadoop.yarn.server.resourcemanager.TestRMHA)  Time elapsed: 5.883 sec  &lt;&lt;&lt; FAILURE!
-java.lang.AssertionError: Incorrect value for metric availableMB expected:&lt;2048&gt; but was:&lt;4096&gt;
-	at org.junit.Assert.fail(Assert.java:93)
-	at org.junit.Assert.failNotEquals(Assert.java:647)
-	at org.junit.Assert.assertEquals(Assert.java:128)
-	at org.junit.Assert.assertEquals(Assert.java:472)
-	at org.apache.hadoop.yarn.server.resourcemanager.TestRMHA.assertMetric(TestRMHA.java:396)
-	at org.apache.hadoop.yarn.server.resourcemanager.TestRMHA.verifyClusterMetrics(TestRMHA.java:387)
-	at org.apache.hadoop.yarn.server.resourcemanager.TestRMHA.testStartAndTransitions(TestRMHA.java:160)
-
-
-Results :
-
-Failed tests: 
-  TestRMHA.testStartAndTransitions:160-&gt;verifyClusterMetrics:387-&gt;assertMetric:396 Incorrect value for metric availableMB expected:&lt;2048&gt; but was:&lt;4096&gt;
-{noformat}</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1852">YARN-1852</a>.
-     Major bug reported by Rohith and fixed by Rohith (resourcemanager)<br>
-     <b>Application recovery throws InvalidStateTransitonException for FAILED and KILLED jobs</b><br>
-     <blockquote>Recovering for failed/killed application throw InvalidStateTransitonException.
-
-These are logged during recovery of applications.</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1850">YARN-1850</a>.
-     Major sub-task reported by Zhijie Shen and fixed by Zhijie Shen <br>
-     <b>Make enabling timeline service configurable </b><br>
-     <blockquote>Like generic history service, we'd better to make enabling timeline service configurable, in case the timeline server is not up</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1849">YARN-1849</a>.
-     Blocker bug reported by Karthik Kambatla and fixed by Karthik Kambatla (resourcemanager)<br>
-     <b>NPE in ResourceTrackerService#registerNodeManager for UAM</b><br>
-     <blockquote>While running an UnmanagedAM on secure cluster, ran into an NPE on failover/restart. This is similar to YARN-1821. </blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1846">YARN-1846</a>.
-     Major bug reported by Robert Kanter and fixed by Robert Kanter <br>
-     <b>TestRM#testNMTokenSentForNormalContainer assumes CapacityScheduler</b><br>
-     <blockquote>TestRM.testNMTokenSentForNormalContainer assumes the CapacityScheduler is being used and tries to do:
-{code:java}
-CapacityScheduler cs = (CapacityScheduler) rm.getResourceScheduler();
-{code}
-
-This throws a {{ClassCastException}} if you're not using the CapacityScheduler.</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1839">YARN-1839</a>.
-     Critical bug reported by Tassapol Athiapinya and fixed by Jian He (applications , capacityscheduler)<br>
-     <b>Capacity scheduler preempts an AM out. AM attempt 2 fails to launch task container with SecretManager$InvalidToken: No NMToken sent</b><br>
-     <blockquote>Use single-node cluster. Turn on capacity scheduler preemption. Run MR sleep job as app 1. Take entire cluster. Run MR sleep job as app 2. Preempt app1 out. Wait till app 2 finishes. App 1 AM attempt 2 will start. It won't be able to launch a task container with this error stack trace in AM logs:
-
-{code}
-2014-03-13 20:13:50,254 INFO [AsyncDispatcher event handler] org.apache.hadoop.mapreduce.v2.app.job.impl.TaskAttemptImpl: Diagnostics report from attempt_1394741557066_0001_m_000000_1009: Container launch failed for container_1394741557066_0001_02_000021 : org.apache.hadoop.security.token.SecretManager$InvalidToken: No NMToken sent for &lt;host&gt;:45454
-	at org.apache.hadoop.yarn.client.api.impl.ContainerManagementProtocolProxy$ContainerManagementProtocolProxyData.newProxy(ContainerManagementProtocolProxy.java:206)
-	at org.apache.hadoop.yarn.client.api.impl.ContainerManagementProtocolProxy$ContainerManagementProtocolProxyData.&lt;init&gt;(ContainerManagementProtocolProxy.java:196)
-	at org.apache.hadoop.yarn.client.api.impl.ContainerManagementProtocolProxy.getProxy(ContainerManagementProtocolProxy.java:117)
-	at org.apache.hadoop.mapreduce.v2.app.launcher.ContainerLauncherImpl.getCMProxy(ContainerLauncherImpl.java:403)
-	at org.apache.hadoop.mapreduce.v2.app.launcher.ContainerLauncherImpl$Container.launch(ContainerLauncherImpl.java:138)
-	at org.apache.hadoop.mapreduce.v2.app.launcher.ContainerLauncherImpl$EventProcessor.run(ContainerLauncherImpl.java:369)
-	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
-	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
-	at java.lang.Thread.run(Thread.java:722)
-{code}
-
-</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1838">YARN-1838</a>.
-     Major sub-task reported by Srimanth Gunturi and fixed by Billie Rinaldi <br>
-     <b>Timeline service getEntities API should provide ability to get entities from given id</b><br>
-     <blockquote>To support pagination, we need ability to get entities from a certain ID by providing a new param called {{fromid}}.
-
-For example on a page of 10 jobs, our first call will be like
-[http://server:8188/ws/v1/timeline/HIVE_QUERY_ID?fields=events,primaryfilters,otherinfo&amp;limit=11]
-When user hits next, we would like to call
-[http://server:8188/ws/v1/timeline/HIVE_QUERY_ID?fields=events,primaryfilters,otherinfo&amp;fromid=JID11&amp;limit=11]
-and continue on for further _Next_ clicks
-
-On hitting back, we will make similar calls for previous items
-[http://server:8188/ws/v1/timeline/HIVE_QUERY_ID?fields=events,primaryfilters,otherinfo&amp;fromid=JID1&amp;limit=11]
-
-{{fromid}} should be inclusive of the id given.</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1833">YARN-1833</a>.
-     Major bug reported by Mit Desai and fixed by Mit Desai <br>
-     <b>TestRMAdminService Fails in trunk and branch-2 : Assert Fails due to different count of UserGroups for currentUser()</b><br>
-     <blockquote>In the test testRefreshUserToGroupsMappingsWithFileSystemBasedConfigurationProvider, the following assert is not needed.
-
-{code}
-Assert.assertTrue(groupWithInit.size() != groupBefore.size());
-{code}
-
-As the assert takes the default groups for groupWithInit (which in my case are users, sshusers and wheel), it fails as the size of both groupWithInit and groupBefore are same.
-
-I do not think we need to have this assert here. Moreover we are also checking that the groupInit does not have the userGroups that are in the groupBefore so removing the assert may not be harmful.</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1830">YARN-1830</a>.
-     Major bug reported by Karthik Kambatla and fixed by Zhijie Shen (resourcemanager)<br>
-     <b>TestRMRestart.testQueueMetricsOnRMRestart failure</b><br>
-     <blockquote>TestRMRestart.testQueueMetricsOnRMRestart fails intermittently as follows (reported on YARN-1815):
-
-{noformat}
-java.lang.AssertionError: expected:&lt;37&gt; but was:&lt;38&gt;
-...
-	at org.apache.hadoop.yarn.server.resourcemanager.TestRMRestart.assertQueueMetrics(TestRMRestart.java:1728)
-	at org.apache.hadoop.yarn.server.resourcemanager.TestRMRestart.testQueueMetricsOnRMRestart(TestRMRestart.java:1682)
-{noformat}</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1824">YARN-1824</a>.
-     Major bug reported by Jian He and fixed by Jian He <br>
-     <b>Make Windows client work with Linux/Unix cluster</b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1821">YARN-1821</a>.
-     Blocker sub-task reported by Karthik Kambatla and fixed by Karthik Kambatla (resourcemanager)<br>
-     <b>NPE on registerNodeManager if the request has containers for UnmanagedAMs</b><br>
-     <blockquote>On RM restart (or failover), NM re-registers with the RM. If it was running containers for Unmanaged AMs, it runs into the following NPE:
-
-{noformat}
-Caused by: org.apache.hadoop.ipc.RemoteException(java.lang.NullPointerException): java.lang.NullPointerException
-        at org.apache.hadoop.yarn.server.resourcemanager.ResourceTrackerService.registerNodeManager(ResourceTrackerService.java:213)
-        at org.apache.hadoop.yarn.server.api.impl.pb.service.ResourceTrackerPBServiceImpl.registerNodeManager(ResourceTrackerPBServiceImpl.java:54)
-{noformat}</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1816">YARN-1816</a>.
-     Major sub-task reported by Arpit Gupta and fixed by Jian He <br>
-     <b>Succeeded application remains in accepted after RM restart</b><br>
-     <blockquote>{code}
-2014-03-10 18:07:31,944|beaver.machine|INFO|Application-Id	    Application-Name	    Application-Type	      User	     Queue	             State	       Final-State	       Progress	                       Tracking-URL
-2014-03-10 18:07:31,945|beaver.machine|INFO|application_1394449508064_0008	test_mapred_ha_multiple_job_nn-rm-1-min-5-jobs_1394449960-4	           MAPREDUCE	    hrt_qa	   default	          ACCEPTED	         SUCCEEDED	           100%	http://hostname:19888/jobhistory/job/job_1394449508064_0008
-2014-03-10 18:08:02,125|beaver.machine|INFO|RUNNING: /usr/bin/yarn application -list -appStates NEW,NEW_SAVING,SUBMITTED,ACCEPTED,RUNNING
-2014-03-10 18:08:03,198|beaver.machine|INFO|14/03/10 18:08:03 INFO client.ConfiguredRMFailoverProxyProvider: Failing over to rm2
-2014-03-10 18:08:03,238|beaver.machine|INFO|Total number of applications (application-types: [] and states: [NEW, NEW_SAVING, SUBMITTED, ACCEPTED, RUNNING]):1
-2014-03-10 18:08:03,239|beaver.machine|INFO|Application-Id	    Application-Name	    Application-Type	      User	     Queue	             State	       Final-State	       Progress	                       Tracking-URL
-2014-03-10 18:08:03,239|beaver.machine|INFO|application_1394449508064_0008	test_mapred_ha_multiple_job_nn-rm-1-min-5-jobs_1394449960-4	           MAPREDUCE	    hrt_qa	   default	          ACCEPTED	         SUCCEEDED	           100%	http://hostname:19888/jobhistory/job/job_1394449508064_0008
-2014-03-10 18:08:33,390|beaver.machine|INFO|RUNNING: /usr/bin/yarn application -list -appStates NEW,NEW_SAVING,SUBMITTED,ACCEPTED,RUNNING
-2014-03-10 18:08:34,437|beaver.machine|INFO|14/03/10 18:08:34 INFO client.ConfiguredRMFailoverProxyProvider: Failing over to rm2
-2014-03-10 18:08:34,477|beaver.machine|INFO|Total number of applications (application-types: [] and states: [NEW, NEW_SAVING, SUBMITTED, ACCEPTED, RUNNING]):1
-2014-03-10 18:08:34,477|beaver.machine|INFO|Application-Id	    Application-Name	    Application-Type	      User	     Queue	             State	       Final-State	       Progress	                       Tracking-URL
-2014-03-10 18:08:34,478|beaver.machine|INFO|application_1394449508064_0008	test_mapred_ha_multiple_job_nn-rm-1-min-5-jobs_1394449960-4	           MAPREDUCE	    hrt_qa	   default	          ACCEPTED	         SUCCEEDED	           100%	http://hostname:19888/jobhistory/job/job_1394449508064_0008
-2014-03-10 18:09:04,628|beaver.machine|INFO|RUNNING: /usr/bin/yarn application -list -appStates NEW,NEW_SAVING,SUBMITTED,ACCEPTED,RUNNING
-2014-03-10 18:09:05,688|beaver.machine|INFO|14/03/10 18:09:05 INFO client.ConfiguredRMFailoverProxyProvider: Failing over to rm2
-2014-03-10 18:09:05,728|beaver.machine|INFO|Total number of applications (application-types: [] and states: [NEW, NEW_SAVING, SUBMITTED, ACCEPTED, RUNNING]):1
-2014-03-10 18:09:05,728|beaver.machine|INFO|Application-Id	    Application-Name	    Application-Type	      User	     Queue	             State	       Final-State	       Progress	                       Tracking-URL
-2014-03-10 18:09:05,729|beaver.machine|INFO|application_1394449508064_0008	test_mapred_ha_multiple_job_nn-rm-1-min-5-jobs_1394449960-4	           MAPREDUCE	    hrt_qa	   default	          ACCEPTED	         SUCCEEDED	           100%	http://hostname:19888/jobhistory/job/job_1394449508064_0008
-2014-03-10 18:09:35,879|beaver.machine|INFO|RUNNING: /usr/bin/yarn application -list -appStates NEW,NEW_SAVING,SUBMITTED,ACCEPTED,RUNNING
-2014-03-10 18:09:36,951|beaver.machine|INFO|14/03/10 18:09:36 INFO client.ConfiguredRMFailoverProxyProvider: Failing over to rm2
-2014-03-10 18:09:36,992|beaver.machine|INFO|Total number of applications (application-types: [] and states: [NEW, NEW_SAVING, SUBMITTED, ACCEPTED, RUNNING]):1
-2014-03-10 18:09:36,993|beaver.machine|INFO|Application-Id	    Application-Name	    Application-Type	      User	     Queue	             State	       Final-State	       Progress	                       Tracking-URL
-2014-03-10 18:09:36,993|beaver.machine|INFO|application_1394449508064_0008	test_mapred_ha_multiple_job_nn-rm-1-min-5-jobs_1394449960-4	           MAPREDUCE	    hrt_qa	   default	          ACCEPTED	         SUCCEEDED	           100%	http://hostname:19888/jobhistory/job/job_1394449508064_0008
-2014-03-10 18:10:07,142|beaver.machine|INFO|RUNNING: /usr/bin/yarn application -list -appStates NEW,NEW_SAVING,SUBMITTED,ACCEPTED,RUNNING
-2014-03-10 18:10:08,201|beaver.machine|INFO|14/03/10 18:10:08 INFO client.ConfiguredRMFailoverProxyProvider: Failing over to rm2
-2014-03-10 18:10:08,242|beaver.machine|INFO|Total number of applications (application-types: [] and states: [NEW, NEW_SAVING, SUBMITTED, ACCEPTED, RUNNING]):1
-2014-03-10 18:10:08,242|beaver.machine|INFO|Application-Id	    Application-Name	    Application-Type	      User	     Queue	             State	       Final-State	       Progress	                       Tracking-URL
-2014-03-10 18:10:08,242|beaver.machine|INFO|application_1394449508064_0008	test_mapred_ha_multiple_job_nn-rm-1-min-5-jobs_1394449960-4	           MAPREDUCE	    hrt_qa	   default	          ACCEPTED	         SUCCEEDED	           100%	http://hostname:19888/jobhistory/job/job_1394449508064_0008
-2014-03-10 18:10:38,392|beaver.machine|INFO|RUNNING: /usr/bin/yarn application -list -appStates NEW,NEW_SAVING,SUBMITTED,ACCEPTED,RUNNING
-2014-03-10 18:10:39,443|beaver.machine|INFO|14/03/10 18:10:39 INFO client.ConfiguredRMFailoverProxyProvider: Failing over to rm2
-2014-03-10 18:10:39,484|beaver.machine|INFO|Total number of applications (application-types: [] and states: [NEW, NEW_SAVING, SUBMITTED, ACCEPTED, RUNNING]):1
-2014-03-10 18:10:39,484|beaver.machine|INFO|Application-Id	    Application-Name	    Application-Type	      User	     Queue	             State	       Final-State	       Progress	                       Tracking-URL
-2014-03-10 18:10:39,485|beaver.machine|INFO|application_1394449508064_0008	test_mapred_ha_multiple_job_nn-rm-1-min-5-jobs_1394449960-4	           MAPREDUCE	    hrt_qa	   default	          ACCEPTED	         SUCCEEDED	           100%	http://hostname:19888/jobhistory/job/job_1394449508064_0008
-{code}</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1812">YARN-1812</a>.
-     Major sub-task reported by Yesha Vora and fixed by Jian He <br>
-     <b>Job stays in PREP state for long time after RM Restarts</b><br>
-     <blockquote>Steps followed:
-
-1) start a sort job with 80 maps and 5 reducers
-2) restart Resource manager when 60 maps and 0 reducers are finished
-3) Wait for job to come out of PREP state.
-
-The job does not come out of PREP state after 7-8 mins.
-After waiting for 7-8 mins, test kills the job.
-
-However, Sort job should not take this long time to come out of PREP state</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1811">YARN-1811</a>.
-     Major sub-task reported by Robert Kanter and fixed by Robert Kanter (resourcemanager)<br>
-     <b>RM HA: AM link broken if the AM is on nodes other than RM</b><br>
-     <blockquote>When using RM HA, if you click on the "Application Master" link in the RM web UI while the job is running, you get an Error 500:
-</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1800">YARN-1800</a>.
-     Critical sub-task reported by Paul Isaychuk and fixed by Varun Vasudev (nodemanager)<br>
-     <b>YARN NodeManager with java.util.concurrent.RejectedExecutionException</b><br>
-     <blockquote>Noticed this on tests running on Apache Hadoop 2.2 cluster
-
-{code}
-2014-01-23 01:30:28,575 INFO  localizer.LocalizedResource (LocalizedResource.java:handle(196)) - Resource hdfs://colo-2:8020/user/fertrist/oozie-oozi/0000605-140114233013619-oozie-oozi-W/aggregator--map-reduce/map-reduce-launcher.jar transitioned from INIT to DOWNLOADING
-2014-01-23 01:30:28,575 INFO  localizer.LocalizedResource (LocalizedResource.java:handle(196)) - Resource hdfs://colo-2:8020/user/fertrist/.staging/job_1389742077466_0396/job.splitmetainfo transitioned from INIT to DOWNLOADING
-2014-01-23 01:30:28,575 INFO  localizer.LocalizedResource (LocalizedResource.java:handle(196)) - Resource hdfs://colo-2:8020/user/fertrist/.staging/job_1389742077466_0396/job.split transitioned from INIT to DOWNLOADING
-2014-01-23 01:30:28,575 INFO  localizer.LocalizedResource (LocalizedResource.java:handle(196)) - Resource hdfs://colo-2:8020/user/fertrist/.staging/job_1389742077466_0396/job.xml transitioned from INIT to DOWNLOADING
-2014-01-23 01:30:28,576 INFO  localizer.ResourceLocalizationService (ResourceLocalizationService.java:addResource(651)) - Downloading public rsrc:{ hdfs://colo-2:8020/user/fertrist/oozie-oozi/0000605-140114233013619-oozie-oozi-W/aggregator--map-reduce/map-reduce-launcher.jar, 1390440627435, FILE, null }
-2014-01-23 01:30:28,576 FATAL event.AsyncDispatcher (AsyncDispatcher.java:dispatch(141)) - Error in dispatcher thread
-java.util.concurrent.RejectedExecutionException
-        at java.util.concurrent.ThreadPoolExecutor$AbortPolicy.rejectedExecution(ThreadPoolExecutor.java:1768)
-        at java.util.concurrent.ThreadPoolExecutor.reject(ThreadPoolExecutor.java:767)
-        at java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:658)
-        at java.util.concurrent.ExecutorCompletionService.submit(ExecutorCompletionService.java:152)
-        at org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService$PublicLocalizer.addResource(ResourceLocalizationService.java:678)
-        at org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService$LocalizerTracker.handle(ResourceLocalizationService.java:583)
-        at org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService$LocalizerTracker.handle(ResourceLocalizationService.java:525)
-        at org.apache.hadoop.yarn.event.AsyncDispatcher.dispatch(AsyncDispatcher.java:134)
-        at org.apache.hadoop.yarn.event.AsyncDispatcher$1.run(AsyncDispatcher.java:81)
-        at java.lang.Thread.run(Thread.java:662)
-2014-01-23 01:30:28,577 INFO  event.AsyncDispatcher (AsyncDispatcher.java:dispatch(144)) - Exiting, bbye..
-2014-01-23 01:30:28,596 INFO  mortbay.log (Slf4jLog.java:info(67)) - Stopped SelectChannelConnector@0.0.0.0:50060
-2014-01-23 01:30:28,597 INFO  containermanager.ContainerManagerImpl (ContainerManagerImpl.java:cleanUpApplicationsOnNMShutDown(328)) - Applications still running : [application_1389742077466_0396]
-2014-01-23 01:30:28,597 INFO  containermanager.ContainerManagerImpl (ContainerManagerImpl.java:cleanUpApplicationsOnNMShutDown(336)) - Wa
-{code}</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1793">YARN-1793</a>.
-     Critical bug reported by Karthik Kambatla and fixed by Karthik Kambatla (resourcemanager)<br>
-     <b>yarn application -kill doesn't kill UnmanagedAMs</b><br>
-     <blockquote>Trying to kill an Unmanaged AM though CLI (yarn application -kill &lt;id&gt;) logs a success, but doesn't actually kill the AM or reclaim the containers allocated to it.</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1789">YARN-1789</a>.
-     Minor improvement reported by Akira AJISAKA and fixed by Tsuyoshi OZAWA (resourcemanager)<br>
-     <b>ApplicationSummary does not escape newlines in the app name</b><br>
-     <blockquote>YARN-side of MAPREDUCE-5778.
-ApplicationSummary is not escaping newlines in the app name. This can result in an application summary log entry that spans multiple lines when users are expecting one-app-per-line output.</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1788">YARN-1788</a>.
-     Critical bug reported by Tassapol Athiapinya and fixed by Varun Vasudev (resourcemanager)<br>
-     <b>AppsCompleted/AppsKilled metric is incorrect when MR job is killed with yarn application -kill</b><br>
-     <blockquote>Run MR sleep job. Kill the application in RUNNING state. Observe RM metrics.
-Expecting AppsCompleted = 0/AppsKilled = 1
-Actual is AppsCompleted = 1/AppsKilled = 0</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1787">YARN-1787</a>.
-     Major sub-task reported by Zhijie Shen and fixed by Zhijie Shen <br>
-     <b>yarn applicationattempt/container print wrong usage information</b><br>
-     <blockquote>yarn applicationattempt prints:
-{code}
-Invalid Command Usage : 
-usage: application
- -appStates &lt;States&gt;             Works with -list to filter applications
-                                 based on input comma-separated list of
-                                 application states. The valid application
-                                 state can be one of the following:
-                                 ALL,NEW,NEW_SAVING,SUBMITTED,ACCEPTED,RUN
-                                 NING,FINISHED,FAILED,KILLED
- -appTypes &lt;Types&gt;               Works with -list to filter applications
-                                 based on input comma-separated list of
-                                 application types.
- -help                           Displays help for all commands.
- -kill &lt;Application ID&gt;          Kills the application.
- -list &lt;arg&gt;                     List application attempts for aplication
-                                 from AHS.
- -movetoqueue &lt;Application ID&gt;   Moves the application to a different
-                                 queue.
- -queue &lt;Queue Name&gt;             Works with the movetoqueue command to
-                                 specify which queue to move an
-                                 application to.
- -status &lt;Application ID&gt;        Prints the status of the application.
-{code}
-
-yarn container prints:
-{code}
-Invalid Command Usage : 
-usage: application
- -appStates &lt;States&gt;             Works with -list to filter applications
-                                 based on input comma-separated list of
-                                 application states. The valid application
-                                 state can be one of the following:
-                                 ALL,NEW,NEW_SAVING,SUBMITTED,ACCEPTED,RUN
-                                 NING,FINISHED,FAILED,KILLED
- -appTypes &lt;Types&gt;               Works with -list to filter applications
-                                 based on input comma-separated list of
-                                 application types.
- -help                           Displays help for all commands.
- -kill &lt;Application ID&gt;          Kills the application.
- -list &lt;arg&gt;                     List application attempts for aplication
-                                 from AHS.
- -movetoqueue &lt;Application ID&gt;   Moves the application to a different
-                                 queue.
- -queue &lt;Queue Name&gt;             Works with the movetoqueue command to
-                                 specify which queue to move an
-                                 application to.
- -status &lt;Application ID&gt;        Prints the status of the application.
-{code}
-
-Both commands print irrelevant yarn application usage information.</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1785">YARN-1785</a>.
-     Major bug reported by bc Wong and fixed by bc Wong <br>
-     <b>FairScheduler treats app lookup failures as ERRORs</b><br>
-     <blockquote>When invoking the /ws/v1/cluster/apps endpoint, RM will eventually get to RMAppImpl#createAndGetApplicationReport, which calls RMAppAttemptImpl#getApplicationResourceUsageReport, which looks up the app in the scheduler, which may or may not exist. So FairScheduler shouldn't log an error for every lookup failure:
-
-{noformat}
-2014-02-17 08:23:21,240 ERROR org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler: Request for appInfo of unknown attemptappattempt_1392419715319_0135_000001
-
-{noformat}</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1783">YARN-1783</a>.
-     Critical bug reported by Arpit Gupta and fixed by Jian He <br>
-     <b>yarn application does not make any progress even when no other application is running when RM is being restarted in the background</b><br>
-     <blockquote>Noticed that during HA tests some tests took over 3 hours to run when the test failed.
-Looking at the logs i see the application made no progress for a very long time. However if i look at application log from yarn it actually ran in 5 mins
-I am seeing same behavior when RM was being restarted in the background and when both RM and AM were being restarted. This does not happen for all applications but a few will hit this in the nightly run.</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1781">YARN-1781</a>.
-     Major sub-task reported by Varun Vasudev and fixed by Varun Vasudev (nodemanager)<br>
-     <b>NM should allow users to specify max disk utilization for local disks</b><br>
-     <blockquote>This is related to YARN-257(it's probably a sub task?). Currently, the NM does not detect full disks and allows full disks to be used by containers leading to repeated failures. YARN-257 deals with graceful handling of full disks. This ticket is only about detection of full disks by the disk health checkers.
-
-The NM should allow users to set a maximum disk utilization for local disks and mark disks as bad once they exceed that utilization. At the very least, the NM should at least detect full disks.
-
-</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1780">YARN-1780</a>.
-     Major sub-task reported by Zhijie Shen and fixed by Zhijie Shen <br>
-     <b>Improve logging in timeline service</b><br>
-     <blockquote>It's difficult to trace whether the client has successfully posted the entity to the timeline service or not.</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1776">YARN-1776</a>.
-     Major sub-task reported by Zhijie Shen and fixed by Zhijie Shen <br>
-     <b>renewDelegationToken should survive RM failover</b><br>
-     <blockquote>When a delegation token is renewed, two RMStateStore operations: 1) removing the old DT, and 2) storing the new DT will happen. If RM fails in between. There would be problem.</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1775">YARN-1775</a>.
-     Major sub-task reported by Rajesh Balamohan and fixed by Rajesh Balamohan (nodemanager)<br>
-     <b>Create SMAPBasedProcessTree to get PSS information</b><br>
-     <blockquote>Create SMAPBasedProcessTree (by extending ProcfsBasedProcessTree), which will make use of PSS for computing the memory usage. </blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1774">YARN-1774</a>.
-     Blocker bug reported by Anubhav Dhoot and fixed by Anubhav Dhoot (resourcemanager)<br>
-     <b>FS: Submitting to non-leaf queue throws NPE</b><br>
-     <blockquote>If you create a hierarchy of queues and assign a job to parent queue, FairScheduler quits with a NPE.
-
-
-
-</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1771">YARN-1771</a>.
-     Critical improvement reported by Sangjin Lee and fixed by Sangjin Lee (nodemanager)<br>
-     <b>many getFileStatus calls made from node manager for localizing a public distributed cache resource</b><br>
-     <blockquote>We're observing that the getFileStatus calls are putting a fair amount of load on the name node as part of checking the public-ness for localizing a resource that belong in the public cache.
-
-We see 7 getFileStatus calls made for each of these resource. We should look into reducing the number of calls to the name node. One example:
-
-{noformat}
-2014-02-27 18:07:27,351 INFO audit: ... cmd=getfileinfo	src=/tmp/temp-887708724/tmp883330348/foo-0.0.44.jar ...
-2014-02-27 18:07:27,352 INFO audit: ... cmd=getfileinfo	src=/tmp/temp-887708724/tmp883330348/foo-0.0.44.jar ...
-2014-02-27 18:07:27,352 INFO audit: ... cmd=getfileinfo	src=/tmp/temp-887708724/tmp883330348 ...
-2014-02-27 18:07:27,353 INFO audit: ... cmd=getfileinfo	src=/tmp/temp-887708724 ...
-2014-02-27 18:07:27,353 INFO audit: ... cmd=getfileinfo	src=/tmp ...
-2014-02-27 18:07:27,354 INFO audit: ... cmd=getfileinfo	src=/	 ...
-2014-02-27 18:07:27,354 INFO audit: ... cmd=getfileinfo	src=/tmp/temp-887708724/tmp883330348/foo-0.0.44.jar ...
-2014-02-27 18:07:27,355 INFO audit: ... cmd=open	src=/tmp/temp-887708724/tmp883330348/foo-0.0.44.jar ...
-{noformat}</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1768">YARN-1768</a>.
-     Minor bug reported by Hitesh Shah and fixed by Tsuyoshi OZAWA (client)<br>
-     <b>yarn kill non-existent application is too verbose</b><br>
-     <blockquote>Instead of catching ApplicationNotFound and logging a simple app not found message, the whole stack trace is logged.</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1766">YARN-1766</a>.
-     Major sub-task reported by Xuan Gong and fixed by Xuan Gong <br>
-     <b>When RM does the initiation, it should use loaded Configuration instead of bootstrap configuration.</b><br>
-     <blockquote>Right now, we have FileSystemBasedConfigurationProvider to let Users upload the configurations into remote File System, and let different RMs share the same configurations.  During the initiation, RM will load the configurations from Remote File System. So when RM initiates the services, it should use the loaded Configurations instead of using the bootstrap configurations.</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1765">YARN-1765</a>.
-     Major sub-task reported by Xuan Gong and fixed by Xuan Gong <br>
-     <b>Write test cases to verify that killApplication API works in RM HA</b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1764">YARN-1764</a>.
-     Major sub-task reported by Xuan Gong and fixed by Xuan Gong <br>
-     <b>Handle RM fail overs after the submitApplication call.</b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1761">YARN-1761</a>.
-     Major sub-task reported by Xuan Gong and fixed by Xuan Gong <br>
-     <b>RMAdminCLI should check whether HA is enabled before executes transitionToActive/transitionToStandby</b><br>
-     <blockquote></blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1760">YARN-1760</a>.
-     Trivial bug reported by Karthik Kambatla and fixed by Karthik Kambatla <br>
-     <b>TestRMAdminService assumes CapacityScheduler</b><br>
-     <blockquote>YARN-1611 adds TestRMAdminService which assumes the use of CapacityScheduler. 
-
-{noformat}
-java.lang.ClassCastException: org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler cannot be cast to org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler
-	at org.apache.hadoop.yarn.server.resourcemanager.TestRMAdminService.testAdminRefreshQueuesWithFileSystemBasedConfigurationProvider(TestRMAdminService.java:115)
-{noformat}</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1758">YARN-1758</a>.
-     Blocker bug reported by Hitesh Shah and fixed by Xuan Gong <br>
-     <b>MiniYARNCluster broken post YARN-1666</b><br>
-     <blockquote>NPE seen when trying to use MiniYARNCluster</blockquote></li>
-<li> <a href="https://issues.apache.org/jira/browse/YARN-1752">YARN-1752</a>.
-     Major bug reported by Jian He and fixed by Rohith <br>
-     <b>Unexpected Unregistered event at Attempt Launched state</b><br>
-     <blockquote>{code}
-2014-02-21 14:56:03,453 ERROR org.apache.hadoop.yarn.server.resourcemanager.rmapp.attempt.RMAppAttemptImpl: Can't handle this event at current state
-org.apache.hadoop.yarn.state.InvalidStateTransitonException: Invalid event: UNREGISTERED at LAUNCHED

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