[ 
https://issues.apache.org/jira/browse/YARN-3999?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14680806#comment-14680806
 ] 

Hadoop QA commented on YARN-3999:
---------------------------------

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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | pre-patch |  17m 28s | Pre-patch trunk compilation is 
healthy. |
| {color:green}+1{color} | @author |   0m  0s | The patch does not contain any 
@author tags. |
| {color:green}+1{color} | tests included |   0m  0s | The patch appears to 
include 8 new or modified test files. |
| {color:green}+1{color} | javac |   7m 41s | There were no new javac warning 
messages. |
| {color:green}+1{color} | javadoc |   9m 45s | There were no new javadoc 
warning messages. |
| {color:green}+1{color} | release audit |   0m 22s | The applied patch does 
not increase the total number of release audit warnings. |
| {color:red}-1{color} | checkstyle |   1m 41s | The applied patch generated  7 
new checkstyle issues (total was 87, now 88). |
| {color:red}-1{color} | whitespace |   0m  2s | The patch has 1  line(s) that 
end in whitespace. Use git apply --whitespace=fix. |
| {color:green}+1{color} | install |   1m 20s | mvn install still works. |
| {color:green}+1{color} | eclipse:eclipse |   0m 33s | The patch built with 
eclipse:eclipse. |
| {color:green}+1{color} | findbugs |   3m  2s | The patch does not introduce 
any new Findbugs (version 3.0.0) warnings. |
| {color:red}-1{color} | yarn tests |   1m 55s | Tests failed in 
hadoop-yarn-common. |
| {color:red}-1{color} | yarn tests |  52m 19s | Tests failed in 
hadoop-yarn-server-resourcemanager. |
| | |  96m 12s | |
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|| Reason || Tests ||
| Failed unit tests | hadoop.yarn.util.TestRackResolver |
|   | 
hadoop.yarn.server.resourcemanager.scheduler.fair.TestFairSchedulerEventLog |
|   | hadoop.yarn.server.resourcemanager.TestRMHA |
|   | hadoop.yarn.server.resourcemanager.TestSubmitApplicationWithRMHA |
|   | hadoop.yarn.server.resourcemanager.scheduler.fifo.TestFifoScheduler |
|   | hadoop.yarn.server.resourcemanager.scheduler.fair.TestFairScheduler |
|   | 
hadoop.yarn.server.resourcemanager.scheduler.capacity.TestCapacityScheduler |
|   | hadoop.yarn.server.resourcemanager.scheduler.capacity.TestQueueParsing |
|   | hadoop.yarn.server.resourcemanager.TestRMHAForNodeLabels |
|   | hadoop.yarn.server.resourcemanager.TestRMEmbeddedElector |
|   | hadoop.yarn.server.resourcemanager.TestKillApplicationWithRMHA |
|   | hadoop.yarn.server.resourcemanager.recovery.TestZKRMStateStore |
|   | 
hadoop.yarn.server.resourcemanager.scheduler.capacity.TestContainerAllocation |
|   | hadoop.yarn.server.resourcemanager.webapp.TestRMWebServicesNodes |
|   | hadoop.yarn.server.resourcemanager.TestRMAdminService |
|   | hadoop.yarn.server.resourcemanager.TestResourceManager |
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|| Subsystem || Report/Notes ||
| Patch URL | 
http://issues.apache.org/jira/secure/attachment/12749667/YARN-3999.3.patch |
| Optional Tests | javadoc javac unit findbugs checkstyle |
| git revision | trunk / 8f73bdd |
| checkstyle |  
https://builds.apache.org/job/PreCommit-YARN-Build/8815/artifact/patchprocess/diffcheckstylehadoop-yarn-server-resourcemanager.txt
 |
| whitespace | 
https://builds.apache.org/job/PreCommit-YARN-Build/8815/artifact/patchprocess/whitespace.txt
 |
| hadoop-yarn-common test log | 
https://builds.apache.org/job/PreCommit-YARN-Build/8815/artifact/patchprocess/testrun_hadoop-yarn-common.txt
 |
| hadoop-yarn-server-resourcemanager test log | 
https://builds.apache.org/job/PreCommit-YARN-Build/8815/artifact/patchprocess/testrun_hadoop-yarn-server-resourcemanager.txt
 |
| Test Results | 
https://builds.apache.org/job/PreCommit-YARN-Build/8815/testReport/ |
| Java | 1.7.0_55 |
| uname | Linux asf906.gq1.ygridcore.net 3.13.0-36-lowlatency #63-Ubuntu SMP 
PREEMPT Wed Sep 3 21:56:12 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux |
| Console output | 
https://builds.apache.org/job/PreCommit-YARN-Build/8815/console |


This message was automatically generated.

> RM hangs on draing events
> -------------------------
>
>                 Key: YARN-3999
>                 URL: https://issues.apache.org/jira/browse/YARN-3999
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Jian He
>            Assignee: Jian He
>         Attachments: YARN-3999.1.patch, YARN-3999.2.patch, YARN-3999.2.patch, 
> YARN-3999.3.patch, YARN-3999.patch, YARN-3999.patch
>
>
> If external systems like ATS, or ZK becomes very slow, draining all the 
> events take a lot of time. If this time becomes larger than 10 mins, all 
> applications will expire. Fixes include:
> 1. add a timeout and stop the dispatcher even if not all events are drained.
> 2. Move ATS service out from RM active service so that RM doesn't need to 
> wait for ATS to flush the events when transitioning to standby.
> 3. Stop client-facing services (ClientRMService etc.) first so that clients 
> get fast notification that RM is stopping/transitioning.



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