[ 
https://issues.apache.org/jira/browse/YARN-3666?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15968274#comment-15968274
 ] 

Hadoop QA commented on YARN-3666:
---------------------------------

| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue}  0m 
17s{color} | {color:blue} Docker mode activated. {color} |
| {color:green}+1{color} | {color:green} @author {color} | {color:green}  0m  
0s{color} | {color:green} The patch does not contain any @author tags. {color} |
| {color:green}+1{color} | {color:green} test4tests {color} | {color:green}  0m 
 0s{color} | {color:green} The patch appears to include 4 new or modified test 
files. {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 13m 
54s{color} | {color:green} YARN-2915 passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 
29s{color} | {color:green} YARN-2915 passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 
18s{color} | {color:green} YARN-2915 passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  0m 
27s{color} | {color:green} YARN-2915 passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green}  0m 
16s{color} | {color:green} YARN-2915 passed {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  0m 
43s{color} | {color:green} YARN-2915 passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
18s{color} | {color:green} YARN-2915 passed {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  0m 
24s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 
26s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  0m 
26s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 
15s{color} | {color:green} 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager:
 The patch generated 0 new + 30 unchanged - 1 fixed = 30 total (was 31) {color} 
|
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  0m 
24s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green}  0m 
13s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} whitespace {color} | {color:green}  0m 
 0s{color} | {color:green} The patch has no whitespace issues. {color} |
| {color:green}+1{color} | {color:green} xml {color} | {color:green}  0m  
3s{color} | {color:green} The patch has no ill-formed XML file. {color} |
| {color:red}-1{color} | {color:red} findbugs {color} | {color:red}  0m 
50s{color} | {color:red} 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager
 generated 67 new + 0 unchanged - 0 fixed = 67 total (was 0) {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
15s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 12m 
49s{color} | {color:green} hadoop-yarn-server-nodemanager in the patch passed. 
{color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  0m 
17s{color} | {color:green} The patch does not generate ASF License warnings. 
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 33m 59s{color} | 
{color:black} {color} |
\\
\\
|| Reason || Tests ||
| FindBugs | 
module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager
 |
|  |  
org.apache.hadoop.yarn.proto.YarnServerNodemanagerRecoveryProtos$ContainerManagerApplicationProto.PARSER
 isn't final but should be  At YarnServerNodemanagerRecoveryProtos.java:be  At 
YarnServerNodemanagerRecoveryProtos.java:[line 229] |
|  |  Class 
org.apache.hadoop.yarn.proto.YarnServerNodemanagerRecoveryProtos$ContainerManagerApplicationProto
 defines non-transient non-serializable instance field unknownFields  In 
YarnServerNodemanagerRecoveryProtos.java:instance field unknownFields  In 
YarnServerNodemanagerRecoveryProtos.java |
|  |  
org.apache.hadoop.yarn.proto.YarnServerNodemanagerRecoveryProtos$DeletionServiceDeleteTaskProto.PARSER
 isn't final but should be  At YarnServerNodemanagerRecoveryProtos.java:be  At 
YarnServerNodemanagerRecoveryProtos.java:[line 1690] |
|  |  Class 
org.apache.hadoop.yarn.proto.YarnServerNodemanagerRecoveryProtos$DeletionServiceDeleteTaskProto
 defines non-transient non-serializable instance field unknownFields  In 
YarnServerNodemanagerRecoveryProtos.java:instance field unknownFields  In 
YarnServerNodemanagerRecoveryProtos.java |
|  |  Useless control flow in 
org.apache.hadoop.yarn.proto.YarnServerNodemanagerRecoveryProtos$DeletionServiceDeleteTaskProto$Builder.maybeForceBuilderInitialization()
  At YarnServerNodemanagerRecoveryProtos.java: At 
YarnServerNodemanagerRecoveryProtos.java:[line 2142] |
|  |  
org.apache.hadoop.yarn.proto.YarnServerNodemanagerRecoveryProtos$LocalizedResourceProto.PARSER
 isn't final but should be  At YarnServerNodemanagerRecoveryProtos.java:be  At 
YarnServerNodemanagerRecoveryProtos.java:[line 2821] |
|  |  Class 
org.apache.hadoop.yarn.proto.YarnServerNodemanagerRecoveryProtos$LocalizedResourceProto
 defines non-transient non-serializable instance field unknownFields  In 
YarnServerNodemanagerRecoveryProtos.java:instance field unknownFields  In 
YarnServerNodemanagerRecoveryProtos.java |
|  |  
org.apache.hadoop.yarn.proto.YarnServerNodemanagerRecoveryProtos$LogDeleterProto.PARSER
 isn't final but should be  At YarnServerNodemanagerRecoveryProtos.java:be  At 
YarnServerNodemanagerRecoveryProtos.java:[line 3594] |
|  |  Class 
org.apache.hadoop.yarn.proto.YarnServerNodemanagerRecoveryProtos$LogDeleterProto
 defines non-transient non-serializable instance field unknownFields  In 
YarnServerNodemanagerRecoveryProtos.java:instance field unknownFields  In 
YarnServerNodemanagerRecoveryProtos.java |
|  |  Useless control flow in 
org.apache.hadoop.yarn.proto.YarnServerNodemanagerRecoveryProtos$LogDeleterProto$Builder.maybeForceBuilderInitialization()
  At YarnServerNodemanagerRecoveryProtos.java: At 
YarnServerNodemanagerRecoveryProtos.java:[line 3862] |
|  |  
org.apache.hadoop.yarn.proto.YarnServerNodemanagerServiceProtos$LocalResourceStatusProto.PARSER
 isn't final but should be  At YarnServerNodemanagerServiceProtos.java:be  At 
YarnServerNodemanagerServiceProtos.java:[line 379] |
|  |  Class 
org.apache.hadoop.yarn.proto.YarnServerNodemanagerServiceProtos$LocalResourceStatusProto
 defines non-transient non-serializable instance field unknownFields  In 
YarnServerNodemanagerServiceProtos.java:instance field unknownFields  In 
YarnServerNodemanagerServiceProtos.java |
|  |  
org.apache.hadoop.yarn.proto.YarnServerNodemanagerServiceProtos$LocalizerHeartbeatResponseProto.PARSER
 isn't final but should be  At YarnServerNodemanagerServiceProtos.java:be  At 
YarnServerNodemanagerServiceProtos.java:[line 3078] |
|  |  Class 
org.apache.hadoop.yarn.proto.YarnServerNodemanagerServiceProtos$LocalizerHeartbeatResponseProto
 defines non-transient non-serializable instance field unknownFields  In 
YarnServerNodemanagerServiceProtos.java:instance field unknownFields  In 
YarnServerNodemanagerServiceProtos.java |
|  |  
org.apache.hadoop.yarn.proto.YarnServerNodemanagerServiceProtos$LocalizerStatusProto.PARSER
 isn't final but should be  At YarnServerNodemanagerServiceProtos.java:be  At 
YarnServerNodemanagerServiceProtos.java:[line 1454] |
|  |  Class 
org.apache.hadoop.yarn.proto.YarnServerNodemanagerServiceProtos$LocalizerStatusProto
 defines non-transient non-serializable instance field unknownFields  In 
YarnServerNodemanagerServiceProtos.java:instance field unknownFields  In 
YarnServerNodemanagerServiceProtos.java |
|  |  
org.apache.hadoop.yarn.proto.YarnServerNodemanagerServiceProtos$ResourceLocalizationSpecProto.PARSER
 isn't final but should be  At YarnServerNodemanagerServiceProtos.java:be  At 
YarnServerNodemanagerServiceProtos.java:[line 2329] |
|  |  Class 
org.apache.hadoop.yarn.proto.YarnServerNodemanagerServiceProtos$ResourceLocalizationSpecProto
 defines non-transient non-serializable instance field unknownFields  In 
YarnServerNodemanagerServiceProtos.java:instance field unknownFields  In 
YarnServerNodemanagerServiceProtos.java |
|  |  
org.apache.hadoop.yarn.server.nodemanager.NodeManager.initAndStartNodeManager(Configuration,
 boolean) invokes System.exit(...), which shuts down the entire virtual machine 
 At NodeManager.java:shuts down the entire virtual machine  At 
NodeManager.java:[line 757] |
|  |  Unchecked/unconfirmed cast from 
org.apache.hadoop.yarn.server.nodemanager.ContainerManagerEvent to 
org.apache.hadoop.yarn.server.nodemanager.CMgrCompletedAppsEvent in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.handle(ContainerManagerEvent)
  At 
ContainerManagerImpl.java:org.apache.hadoop.yarn.server.nodemanager.CMgrCompletedAppsEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.handle(ContainerManagerEvent)
  At ContainerManagerImpl.java:[line 1465] |
|  |  Unchecked/unconfirmed cast from 
org.apache.hadoop.yarn.server.nodemanager.ContainerManagerEvent to 
org.apache.hadoop.yarn.server.nodemanager.CMgrCompletedContainersEvent in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.handle(ContainerManagerEvent)
  At 
ContainerManagerImpl.java:org.apache.hadoop.yarn.server.nodemanager.CMgrCompletedContainersEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.handle(ContainerManagerEvent)
  At ContainerManagerImpl.java:[line 1501] |
|  |  Unchecked/unconfirmed cast from 
org.apache.hadoop.yarn.server.nodemanager.ContainerManagerEvent to 
org.apache.hadoop.yarn.server.nodemanager.CMgrDecreaseContainersResourceEvent 
in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.handle(ContainerManagerEvent)
  At 
ContainerManagerImpl.java:org.apache.hadoop.yarn.server.nodemanager.CMgrDecreaseContainersResourceEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.handle(ContainerManagerEvent)
  At ContainerManagerImpl.java:[line 1534] |
|  |  Unchecked/unconfirmed cast from 
org.apache.hadoop.yarn.server.nodemanager.ContainerManagerEvent to 
org.apache.hadoop.yarn.server.nodemanager.CMgrSignalContainersEvent in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.handle(ContainerManagerEvent)
  At 
ContainerManagerImpl.java:org.apache.hadoop.yarn.server.nodemanager.CMgrSignalContainersEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.handle(ContainerManagerEvent)
  At ContainerManagerImpl.java:[line 1549] |
|  |  Unchecked/unconfirmed cast from 
org.apache.hadoop.yarn.server.nodemanager.containermanager.application.ApplicationEvent
 to 
org.apache.hadoop.yarn.server.nodemanager.containermanager.application.ApplicationContainerFinishedEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.application.ApplicationImpl$AppFinishTransition.transition(ApplicationImpl,
 ApplicationEvent)  At 
ApplicationImpl.java:org.apache.hadoop.yarn.server.nodemanager.containermanager.application.ApplicationContainerFinishedEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.application.ApplicationImpl$AppFinishTransition.transition(ApplicationImpl,
 ApplicationEvent)  At ApplicationImpl.java:[line 527] |
|  |  Unchecked/unconfirmed cast from 
org.apache.hadoop.yarn.server.nodemanager.containermanager.application.ApplicationEvent
 to 
org.apache.hadoop.yarn.server.nodemanager.containermanager.application.ApplicationFinishEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.application.ApplicationImpl$AppFinishTriggeredTransition.transition(ApplicationImpl,
 ApplicationEvent)  At 
ApplicationImpl.java:org.apache.hadoop.yarn.server.nodemanager.containermanager.application.ApplicationFinishEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.application.ApplicationImpl$AppFinishTriggeredTransition.transition(ApplicationImpl,
 ApplicationEvent)  At ApplicationImpl.java:[line 501] |
|  |  Unchecked/unconfirmed cast from 
org.apache.hadoop.yarn.server.nodemanager.containermanager.application.ApplicationEvent
 to 
org.apache.hadoop.yarn.server.nodemanager.containermanager.application.ApplicationInitEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.application.ApplicationImpl$AppInitTransition.transition(ApplicationImpl,
 ApplicationEvent)  At 
ApplicationImpl.java:org.apache.hadoop.yarn.server.nodemanager.containermanager.application.ApplicationInitEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.application.ApplicationImpl$AppInitTransition.transition(ApplicationImpl,
 ApplicationEvent)  At ApplicationImpl.java:[line 317] |
|  |  Unchecked/unconfirmed cast from 
org.apache.hadoop.yarn.server.nodemanager.containermanager.application.ApplicationEvent
 to 
org.apache.hadoop.yarn.server.nodemanager.containermanager.application.ApplicationContainerFinishedEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.application.ApplicationImpl$ContainerDoneTransition.transition(ApplicationImpl,
 ApplicationEvent)  At 
ApplicationImpl.java:org.apache.hadoop.yarn.server.nodemanager.containermanager.application.ApplicationContainerFinishedEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.application.ApplicationImpl$ContainerDoneTransition.transition(ApplicationImpl,
 ApplicationEvent)  At ApplicationImpl.java:[line 468] |
|  |  Unchecked/unconfirmed cast from 
org.apache.hadoop.yarn.server.nodemanager.containermanager.application.ApplicationEvent
 to 
org.apache.hadoop.yarn.server.nodemanager.containermanager.application.ApplicationContainerInitEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.application.ApplicationImpl$InitContainerTransition.transition(ApplicationImpl,
 ApplicationEvent)  At 
ApplicationImpl.java:org.apache.hadoop.yarn.server.nodemanager.containermanager.application.ApplicationContainerInitEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.application.ApplicationImpl$InitContainerTransition.transition(ApplicationImpl,
 ApplicationEvent)  At ApplicationImpl.java:[line 427] |
|  |  Unchecked/unconfirmed cast from 
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerEvent
 to 
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerDiagnosticsUpdateEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerImpl$ContainerDiagnosticsUpdateTransition.transition(ContainerImpl,
 ContainerEvent)  At 
ContainerImpl.java:org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerDiagnosticsUpdateEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerImpl$ContainerDiagnosticsUpdateTransition.transition(ContainerImpl,
 ContainerEvent)  At ContainerImpl.java:[line 1658] |
|  |  Unchecked/unconfirmed cast from 
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerEvent
 to 
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerExitEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerImpl$ContainerKilledTransition.transition(ContainerImpl,
 ContainerEvent)  At 
ContainerImpl.java:org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerExitEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerImpl$ContainerKilledTransition.transition(ContainerImpl,
 ContainerEvent)  At ContainerImpl.java:[line 1483] |
|  |  Unchecked/unconfirmed cast from 
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerEvent
 to 
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerExitEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerImpl$ExitedWithFailureTransition.transition(ContainerImpl,
 ContainerEvent)  At 
ContainerImpl.java:org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerExitEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerImpl$ExitedWithFailureTransition.transition(ContainerImpl,
 ContainerEvent)  At ContainerImpl.java:[line 1213] |
|  |  Unchecked/unconfirmed cast from 
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerEvent
 to 
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerKillEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerImpl$KillBeforeRunningTransition.transition(ContainerImpl,
 ContainerEvent)  At 
ContainerImpl.java:org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerKillEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerImpl$KillBeforeRunningTransition.transition(ContainerImpl,
 ContainerEvent)  At ContainerImpl.java:[line 1429] |
|  |  Unchecked/unconfirmed cast from 
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerEvent
 to 
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerKillEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerImpl$KillOnNewTransition.transition(ContainerImpl,
 ContainerEvent)  At 
ContainerImpl.java:org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerKillEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerImpl$KillOnNewTransition.transition(ContainerImpl,
 ContainerEvent)  At ContainerImpl.java:[line 1538] |
|  |  Unchecked/unconfirmed cast from 
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerEvent
 to 
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerKillEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerImpl$KillTransition.transition(ContainerImpl,
 ContainerEvent)  At 
ContainerImpl.java:org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerKillEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerImpl$KillTransition.transition(ContainerImpl,
 ContainerEvent)  At ContainerImpl.java:[line 1469] |
|  |  Unchecked/unconfirmed cast from 
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerEvent
 to 
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerResourceLocalizedEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerImpl$LocalizedResourceDuringKillTransition.transition(ContainerImpl,
 ContainerEvent)  At 
ContainerImpl.java:org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerResourceLocalizedEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerImpl$LocalizedResourceDuringKillTransition.transition(ContainerImpl,
 ContainerEvent)  At ContainerImpl.java:[line 1444] |
|  |  Unchecked/unconfirmed cast from 
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerEvent
 to 
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerResourceLocalizedEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerImpl$LocalizedTransition.transition(ContainerImpl,
 ContainerEvent)  At 
ContainerImpl.java:org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerResourceLocalizedEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerImpl$LocalizedTransition.transition(ContainerImpl,
 ContainerEvent)  At ContainerImpl.java:[line 893] |
|  |  Unchecked/unconfirmed cast from 
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerEvent
 to 
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerResourceFailedEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerImpl$ResourceFailedTransition.transition(ContainerImpl,
 ContainerEvent)  At 
ContainerImpl.java:org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerResourceFailedEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerImpl$ResourceFailedTransition.transition(ContainerImpl,
 ContainerEvent)  At ContainerImpl.java:[line 1406] |
|  |  Unchecked/unconfirmed cast from 
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerEvent
 to 
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerResourceFailedEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerImpl$ResourceLocalizationFailedWhileReInitTransition.transition(ContainerImpl,
 ContainerEvent)  At 
ContainerImpl.java:org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerResourceFailedEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerImpl$ResourceLocalizationFailedWhileReInitTransition.transition(ContainerImpl,
 ContainerEvent)  At ContainerImpl.java:[line 1114] |
|  |  Unchecked/unconfirmed cast from 
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerEvent
 to 
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerResourceFailedEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerImpl$ResourceLocalizationFailedWhileRunningTransition.transition(ContainerImpl,
 ContainerEvent)  At 
ContainerImpl.java:org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerResourceFailedEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerImpl$ResourceLocalizationFailedWhileRunningTransition.transition(ContainerImpl,
 ContainerEvent)  At ContainerImpl.java:[line 1098] |
|  |  Unchecked/unconfirmed cast from 
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerEvent
 to 
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerResourceLocalizedEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerImpl$ResourceLocalizedWhileReInitTransition.transition(ContainerImpl,
 ContainerEvent)  At 
ContainerImpl.java:org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerResourceLocalizedEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerImpl$ResourceLocalizedWhileReInitTransition.transition(ContainerImpl,
 ContainerEvent)  At ContainerImpl.java:[line 1037] |
|  |  Unchecked/unconfirmed cast from 
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerEvent
 to 
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerResourceLocalizedEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerImpl$ResourceLocalizedWhileRunningTransition.transition(ContainerImpl,
 ContainerEvent)  At 
ContainerImpl.java:org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerResourceLocalizedEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerImpl$ResourceLocalizedWhileRunningTransition.transition(ContainerImpl,
 ContainerEvent)  At ContainerImpl.java:[line 1061] |
|  |  Unchecked/unconfirmed cast from 
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerEvent
 to 
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerExitEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerImpl$RetryFailureTransition.transition(ContainerImpl,
 ContainerEvent)  At 
ContainerImpl.java:org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerExitEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerImpl$RetryFailureTransition.transition(ContainerImpl,
 ContainerEvent)  At ContainerImpl.java:[line 1243] |
|  |  Unchecked/unconfirmed cast from 
org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainersLauncherEvent
 to 
org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.SignalContainersLauncherEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainersLauncher.handle(ContainersLauncherEvent)
  At 
ContainersLauncher.java:org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.SignalContainersLauncherEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainersLauncher.handle(ContainersLauncherEvent)
  At ContainersLauncher.java:[line 157] |
|  |  Exceptional return value of 
java.util.concurrent.ExecutorService.submit(Callable) ignored in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainersLauncher.handle(ContainersLauncherEvent)
  At ContainersLauncher.java:ignored in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainersLauncher.handle(ContainersLauncherEvent)
  At ContainersLauncher.java:[line 118] |
|  |  Unchecked/unconfirmed cast from 
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.event.ResourceEvent
 to 
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.event.ResourceRecoveredEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.LocalResourcesTrackerImpl.handle(ResourceEvent)
  At 
LocalResourcesTrackerImpl.java:org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.event.ResourceRecoveredEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.LocalResourcesTrackerImpl.handle(ResourceEvent)
  At LocalResourcesTrackerImpl.java:[line 184] |
|  |  Unchecked/unconfirmed cast from 
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.event.ResourceEvent
 to 
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.event.ResourceReleaseEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.LocalResourcesTrackerImpl.handle(ResourceEvent)
  At 
LocalResourcesTrackerImpl.java:org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.event.ResourceReleaseEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.LocalResourcesTrackerImpl.handle(ResourceEvent)
  At LocalResourcesTrackerImpl.java:[line 165] |
|  |  Unchecked/unconfirmed cast from 
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.event.ResourceEvent
 to 
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.event.ResourceFailedLocalizationEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.LocalizedResource$FetchFailedTransition.transition(LocalizedResource,
 ResourceEvent)  At 
LocalizedResource.java:org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.event.ResourceFailedLocalizationEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.LocalizedResource$FetchFailedTransition.transition(LocalizedResource,
 ResourceEvent)  At LocalizedResource.java:[line 265] |
|  |  Unchecked/unconfirmed cast from 
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.event.ResourceEvent
 to 
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.event.ResourceRequestEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.LocalizedResource$FetchResourceTransition.transition(LocalizedResource,
 ResourceEvent)  At 
LocalizedResource.java:org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.event.ResourceRequestEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.LocalizedResource$FetchResourceTransition.transition(LocalizedResource,
 ResourceEvent)  At LocalizedResource.java:[line 229] |
|  |  Unchecked/unconfirmed cast from 
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.event.ResourceEvent
 to 
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.event.ResourceLocalizedEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.LocalizedResource$FetchSuccessTransition.transition(LocalizedResource,
 ResourceEvent)  At 
LocalizedResource.java:org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.event.ResourceLocalizedEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.LocalizedResource$FetchSuccessTransition.transition(LocalizedResource,
 ResourceEvent)  At LocalizedResource.java:[line 246] |
|  |  Unchecked/unconfirmed cast from 
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.event.ResourceEvent
 to 
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.event.ResourceRequestEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.LocalizedResource$LocalizedResourceTransition.transition(LocalizedResource,
 ResourceEvent)  At 
LocalizedResource.java:org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.event.ResourceRequestEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.LocalizedResource$LocalizedResourceTransition.transition(LocalizedResource,
 ResourceEvent)  At LocalizedResource.java:[line 285] |
|  |  Unchecked/unconfirmed cast from 
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.event.ResourceEvent
 to 
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.event.ResourceRecoveredEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.LocalizedResource$RecoveredTransition.transition(LocalizedResource,
 ResourceEvent)  At 
LocalizedResource.java:org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.event.ResourceRecoveredEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.LocalizedResource$RecoveredTransition.transition(LocalizedResource,
 ResourceEvent)  At LocalizedResource.java:[line 309] |
|  |  Unchecked/unconfirmed cast from 
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.event.ResourceEvent
 to 
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.event.ResourceReleaseEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.LocalizedResource$ReleaseTransition.transition(LocalizedResource,
 ResourceEvent)  At 
LocalizedResource.java:org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.event.ResourceReleaseEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.LocalizedResource$ReleaseTransition.transition(LocalizedResource,
 ResourceEvent)  At LocalizedResource.java:[line 301] |
|  |  Unchecked/unconfirmed cast from 
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.event.LocalizationEvent
 to 
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.event.ApplicationLocalizationEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.handle(LocalizationEvent)
  At 
ResourceLocalizationService.java:org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.event.ApplicationLocalizationEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.handle(LocalizationEvent)
  At ResourceLocalizationService.java:[line 430] |
|  |  Unchecked/unconfirmed cast from 
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.event.LocalizationEvent
 to 
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.event.ContainerLocalizationCleanupEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.handle(LocalizationEvent)
  At 
ResourceLocalizationService.java:org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.event.ContainerLocalizationCleanupEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.handle(LocalizationEvent)
  At ResourceLocalizationService.java:[line 443] |
|  |  Unchecked/unconfirmed cast from 
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.event.LocalizationEvent
 to 
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.event.ContainerLocalizationEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.handle(LocalizationEvent)
  At 
ResourceLocalizationService.java:org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.event.ContainerLocalizationEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.handle(LocalizationEvent)
  At ResourceLocalizationService.java:[line 437] |
|  |  Unchecked/unconfirmed cast from 
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.event.LocalizationEvent
 to 
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.event.ContainerLocalizationRequestEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.handle(LocalizationEvent)
  At 
ResourceLocalizationService.java:org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.event.ContainerLocalizationRequestEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.handle(LocalizationEvent)
  At ResourceLocalizationService.java:[line 434] |
|  |  Unchecked/unconfirmed cast from 
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.event.LocalizerEvent
 to 
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.event.LocalizerResourceRequestEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService$LocalizerTracker.handle(LocalizerEvent)
  At 
ResourceLocalizationService.java:org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.event.LocalizerResourceRequestEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService$LocalizerTracker.handle(LocalizerEvent)
  At ResourceLocalizationService.java:[line 766] |
|  |  Exceptional return value of 
java.util.concurrent.ExecutorService.submit(Callable) ignored in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.sharedcache.SharedCacheUploadService.handle(SharedCacheUploadEvent)
  At SharedCacheUploadService.java:ignored in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.sharedcache.SharedCacheUploadService.handle(SharedCacheUploadEvent)
  At SharedCacheUploadService.java:[line 118] |
|  |  Unchecked/unconfirmed cast from 
org.apache.hadoop.yarn.server.nodemanager.containermanager.loghandler.event.LogHandlerEvent
 to 
org.apache.hadoop.yarn.server.nodemanager.containermanager.loghandler.event.LogHandlerAppFinishedEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.logaggregation.LogAggregationService.handle(LogHandlerEvent)
  At 
LogAggregationService.java:org.apache.hadoop.yarn.server.nodemanager.containermanager.loghandler.event.LogHandlerAppFinishedEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.logaggregation.LogAggregationService.handle(LogHandlerEvent)
  At LogAggregationService.java:[line 531] |
|  |  Unchecked/unconfirmed cast from 
org.apache.hadoop.yarn.server.nodemanager.containermanager.loghandler.event.LogHandlerEvent
 to 
org.apache.hadoop.yarn.server.nodemanager.containermanager.loghandler.event.LogHandlerAppStartedEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.logaggregation.LogAggregationService.handle(LogHandlerEvent)
  At 
LogAggregationService.java:org.apache.hadoop.yarn.server.nodemanager.containermanager.loghandler.event.LogHandlerAppStartedEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.logaggregation.LogAggregationService.handle(LogHandlerEvent)
  At LogAggregationService.java:[line 516] |
|  |  Unchecked/unconfirmed cast from 
org.apache.hadoop.yarn.server.nodemanager.containermanager.loghandler.event.LogHandlerEvent
 to 
org.apache.hadoop.yarn.server.nodemanager.containermanager.loghandler.event.LogHandlerContainerFinishedEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.logaggregation.LogAggregationService.handle(LogHandlerEvent)
  At 
LogAggregationService.java:org.apache.hadoop.yarn.server.nodemanager.containermanager.loghandler.event.LogHandlerContainerFinishedEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.logaggregation.LogAggregationService.handle(LogHandlerEvent)
  At LogAggregationService.java:[line 525] |
|  |  Unchecked/unconfirmed cast from 
org.apache.hadoop.yarn.server.nodemanager.containermanager.loghandler.event.LogHandlerEvent
 to 
org.apache.hadoop.yarn.server.nodemanager.containermanager.loghandler.event.LogHandlerAppFinishedEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.loghandler.NonAggregatingLogHandler.handle(LogHandlerEvent)
  At 
NonAggregatingLogHandler.java:org.apache.hadoop.yarn.server.nodemanager.containermanager.loghandler.event.LogHandlerAppFinishedEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.loghandler.NonAggregatingLogHandler.handle(LogHandlerEvent)
  At NonAggregatingLogHandler.java:[line 164] |
|  |  Unchecked/unconfirmed cast from 
org.apache.hadoop.yarn.server.nodemanager.containermanager.loghandler.event.LogHandlerEvent
 to 
org.apache.hadoop.yarn.server.nodemanager.containermanager.loghandler.event.LogHandlerAppStartedEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.loghandler.NonAggregatingLogHandler.handle(LogHandlerEvent)
  At 
NonAggregatingLogHandler.java:org.apache.hadoop.yarn.server.nodemanager.containermanager.loghandler.event.LogHandlerAppStartedEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.loghandler.NonAggregatingLogHandler.handle(LogHandlerEvent)
  At NonAggregatingLogHandler.java:[line 152] |
|  |  Unchecked/unconfirmed cast from 
org.apache.hadoop.yarn.server.nodemanager.containermanager.monitor.ContainersMonitorEvent
 to 
org.apache.hadoop.yarn.server.nodemanager.containermanager.monitor.ChangeMonitoringContainerResourceEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.monitor.ContainersMonitorImpl.handle(ContainersMonitorEvent)
  At 
ContainersMonitorImpl.java:org.apache.hadoop.yarn.server.nodemanager.containermanager.monitor.ChangeMonitoringContainerResourceEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.containermanager.monitor.ContainersMonitorImpl.handle(ContainersMonitorEvent)
  At ContainersMonitorImpl.java:[line 874] |
|  |  
org.apache.hadoop.yarn.server.nodemanager.security.authorize.NMPolicyProvider.getServices()
 may expose internal representation by returning 
NMPolicyProvider.nodeManagerServices  At NMPolicyProvider.java:by returning 
NMPolicyProvider.nodeManagerServices  At NMPolicyProvider.java:[line 46] |
|  |  Unchecked/unconfirmed cast from 
org.apache.hadoop.yarn.server.nodemanager.containermanager.application.ApplicationEvent
 to 
org.apache.hadoop.yarn.server.nodemanager.containermanager.application.ApplicationContainerFinishedEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.timelineservice.NMTimelinePublisher.publishApplicationEvent(ApplicationEvent)
  At 
NMTimelinePublisher.java:org.apache.hadoop.yarn.server.nodemanager.containermanager.application.ApplicationContainerFinishedEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.timelineservice.NMTimelinePublisher.publishApplicationEvent(ApplicationEvent)
  At NMTimelinePublisher.java:[line 299] |
|  |  Unchecked/unconfirmed cast from 
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.event.LocalizationEvent
 to 
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.event.ContainerLocalizationEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.timelineservice.NMTimelinePublisher.publishLocalizationEvent(LocalizationEvent)
  At 
NMTimelinePublisher.java:org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.event.ContainerLocalizationEvent
 in 
org.apache.hadoop.yarn.server.nodemanager.timelineservice.NMTimelinePublisher.publishLocalizationEvent(LocalizationEvent)
  At NMTimelinePublisher.java:[line 340] |
\\
\\
|| Subsystem || Report/Notes ||
| Docker |  Image:yetus/hadoop:612578f |
| JIRA Issue | YARN-3666 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/12863363/YARN-3666-YARN-2915.v4.patch
 |
| Optional Tests |  asflicense  findbugs  xml  compile  javac  javadoc  
mvninstall  mvnsite  unit  checkstyle  |
| uname | Linux 7d8251e5b881 3.13.0-106-generic #153-Ubuntu SMP Tue Dec 6 
15:44:32 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/hadoop/patchprocess/precommit/personality/provided.sh 
|
| git revision | YARN-2915 / 47451e0 |
| Default Java | 1.8.0_121 |
| findbugs | v3.0.0 |
| findbugs | 
https://builds.apache.org/job/PreCommit-YARN-Build/15630/artifact/patchprocess/new-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-nodemanager.html
 |
|  Test Results | 
https://builds.apache.org/job/PreCommit-YARN-Build/15630/testReport/ |
| modules | C: 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager
 U: 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager
 |
| Console output | 
https://builds.apache.org/job/PreCommit-YARN-Build/15630/console |
| Powered by | Apache Yetus 0.5.0-SNAPSHOT   http://yetus.apache.org |


This message was automatically generated.



> Federation Intercepting and propagating AM-RM communications
> ------------------------------------------------------------
>
>                 Key: YARN-3666
>                 URL: https://issues.apache.org/jira/browse/YARN-3666
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: nodemanager, resourcemanager
>            Reporter: Kishore Chaliparambil
>            Assignee: Botong Huang
>         Attachments: YARN-3666-YARN-2915.v1.patch, 
> YARN-3666-YARN-2915.v2.patch, YARN-3666-YARN-2915.v3.patch, 
> YARN-3666-YARN-2915.v4.patch
>
>
> In order, to support transparent "spanning" of jobs across sub-clusters, all 
> AM-RM communications are proxied (via YARN-2884).
> This JIRA tracks federation-specific mechanisms that decide how to 
> "split/broadcast" requests to the RMs and "merge" answers to 
> the AM.



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