[jira] [Commented] (YARN-3508) Preemption processing occuring on the main RM dispatcher

["Hadoop QA (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/YARN-3508?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14609215#comment-14609215 ] 

Hadoop QA commented on YARN-3508:
---------------------------------

\\
\\
| (x) *{color:red}-1 overall{color}* |
\\
\\
|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | pre-patch |  23m  5s | 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 3 new or modified test files. |
| {color:green}+1{color} | javac |   9m 59s | There were no new javac warning messages. |
| {color:green}+1{color} | javadoc |  11m 10s | 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 |   0m 51s | The applied patch generated  7 new checkstyle issues (total was 249, now 251). |
| {color:green}+1{color} | whitespace |   0m  2s | The patch has no lines that end in whitespace. |
| {color:green}+1{color} | install |   1m 34s | mvn install still works. |
| {color:green}+1{color} | eclipse:eclipse |   0m 32s | The patch built with eclipse:eclipse. |
| {color:green}+1{color} | findbugs |   1m 28s | The patch does not introduce any new Findbugs (version 3.0.0) warnings. |
| {color:red}-1{color} | yarn tests |  48m 28s | Tests failed in hadoop-yarn-server-resourcemanager. |
| | |  97m 39s | |
\\
\\
|| Reason || Tests ||
| Failed unit tests | hadoop.yarn.server.resourcemanager.scheduler.fifo.TestFifoScheduler |
|   | hadoop.yarn.server.resourcemanager.TestRM |
| Timed out tests | org.apache.hadoop.yarn.server.resourcemanager.TestWorkPreservingRMRestart |
\\
\\
|| Subsystem || Report/Notes ||
| Patch URL | http://issues.apache.org/jira/secure/attachment/12742937/YARN-3508.05.patch |
| Optional Tests | javadoc javac unit findbugs checkstyle |
| git revision | trunk / 147e020 |
| checkstyle |  https://builds.apache.org/job/PreCommit-YARN-Build/8397/artifact/patchprocess/diffcheckstylehadoop-yarn-server-resourcemanager.txt |
| hadoop-yarn-server-resourcemanager test log | https://builds.apache.org/job/PreCommit-YARN-Build/8397/artifact/patchprocess/testrun_hadoop-yarn-server-resourcemanager.txt |
| Test Results | https://builds.apache.org/job/PreCommit-YARN-Build/8397/testReport/ |
| Java | 1.7.0_55 |
| uname | Linux asf903.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/8397/console |


This message was automatically generated.

> Preemption processing occuring on the main RM dispatcher
> --------------------------------------------------------
>
>                 Key: YARN-3508
>                 URL: https://issues.apache.org/jira/browse/YARN-3508
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: resourcemanager, scheduler
>    Affects Versions: 2.6.0
>            Reporter: Jason Lowe
>            Assignee: Varun Saxena
>         Attachments: YARN-3508.002.patch, YARN-3508.01.patch, YARN-3508.03.patch, YARN-3508.04.patch, YARN-3508.05.patch
>
>
> We recently saw the RM for a large cluster lag far behind on the AsyncDispacher event queue.  The AsyncDispatcher thread was consistently blocked on the highly-contended CapacityScheduler lock trying to dispatch preemption-related events for RMContainerPreemptEventDispatcher.  Preemption processing should occur on the scheduler event dispatcher thread or a separate thread to avoid delaying the processing of other events in the primary dispatcher queue.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)