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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-4041) Slow delegation token renewal can severely prolong RM recovery
Date Wed, 21 Oct 2015 20:04:27 GMT

    [ https://issues.apache.org/jira/browse/YARN-4041?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14967776#comment-14967776
] 

Hadoop QA commented on YARN-4041:
---------------------------------

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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | pre-patch |  19m 20s | 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 1 new
or modified test files. |
| {color:green}+1{color} | javac |   9m  1s | There were no new javac warning messages. |
| {color:green}+1{color} | javadoc |  11m 39s | There were no new javadoc warning messages.
|
| {color:green}+1{color} | release audit |   0m 25s | The applied patch does not increase
the total number of release audit warnings. |
| {color:green}+1{color} | checkstyle |   0m 59s | There were no new checkstyle issues. |
| {color:green}+1{color} | whitespace |   0m  1s | The patch has no lines that end in whitespace.
|
| {color:green}+1{color} | install |   1m 41s | mvn install still works. |
| {color:green}+1{color} | eclipse:eclipse |   0m 38s | The patch built with eclipse:eclipse.
|
| {color:green}+1{color} | findbugs |   1m 39s | The patch does not introduce any new Findbugs
(version 3.0.0) warnings. |
| {color:red}-1{color} | yarn tests |  58m 36s | Tests failed in hadoop-yarn-server-resourcemanager.
|
| | | 104m  5s | |
\\
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|| Reason || Tests ||
| Failed unit tests | hadoop.yarn.server.resourcemanager.scheduler.fifo.TestFifoScheduler
|
|   | hadoop.yarn.server.resourcemanager.webapp.TestRMWebServicesAppsModification |
|   | hadoop.yarn.server.resourcemanager.webapp.TestRMWebServicesCapacitySched |
|   | hadoop.yarn.server.resourcemanager.webapp.TestRMWebServicesForCSWithPartitions |
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|| Subsystem || Report/Notes ||
| Patch URL | http://issues.apache.org/jira/secure/attachment/12767832/0004-YARN-4041.patch
|
| Optional Tests | javadoc javac unit findbugs checkstyle |
| git revision | trunk / e27c2ae |
| hadoop-yarn-server-resourcemanager test log | https://builds.apache.org/job/PreCommit-YARN-Build/9511/artifact/patchprocess/testrun_hadoop-yarn-server-resourcemanager.txt
|
| Test Results | https://builds.apache.org/job/PreCommit-YARN-Build/9511/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/9511/console |


This message was automatically generated.

> Slow delegation token renewal can severely prolong RM recovery
> --------------------------------------------------------------
>
>                 Key: YARN-4041
>                 URL: https://issues.apache.org/jira/browse/YARN-4041
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: resourcemanager
>    Affects Versions: 2.6.0
>            Reporter: Jason Lowe
>            Assignee: Sunil G
>         Attachments: 0001-YARN-4041.patch, 0002-YARN-4041.patch, 0003-YARN-4041.patch,
0004-YARN-4041.patch
>
>
> When the RM does a work-preserving restart it synchronously tries to renew delegation
tokens for every active application.  If a token server happens to be down or is running slow
and a lot of the active apps were using tokens from that server then it can have a huge impact
on the time it takes the RM to process the restart.



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