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https://issues.apache.org/jira/browse/YARN-3633?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14549675#comment-14549675
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Hadoop QA commented on YARN-3633:
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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | pre-patch | 14m 52s | 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 | 7m 34s | There were no new javac warning
messages. |
| {color:green}+1{color} | javadoc | 9m 41s | There were no new javadoc
warning messages. |
| {color:green}+1{color} | release audit | 0m 24s | The applied patch does
not increase the total number of release audit warnings. |
| {color:red}-1{color} | checkstyle | 0m 51s | The applied patch generated 8
new checkstyle issues (total was 120, now 126). |
| {color:red}-1{color} | whitespace | 0m 1s | The patch has 1 line(s) that
end in whitespace. Use git apply --whitespace=fix. |
| {color:green}+1{color} | install | 1m 34s | mvn install still works. |
| {color:green}+1{color} | eclipse:eclipse | 0m 33s | The patch built with
eclipse:eclipse. |
| {color:red}-1{color} | findbugs | 1m 17s | The patch appears to introduce 1
new Findbugs (version 3.0.0) warnings. |
| {color:green}+1{color} | yarn tests | 50m 3s | Tests passed in
hadoop-yarn-server-resourcemanager. |
| | | 86m 54s | |
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|| Reason || Tests ||
| FindBugs | module:hadoop-yarn-server-resourcemanager |
| | Inconsistent synchronization of
org.apache.hadoop.yarn.server.resourcemanager.recovery.FileSystemRMStateStore.isHDFS;
locked 66% of time Unsynchronized access at FileSystemRMStateStore.java:66%
of time Unsynchronized access at FileSystemRMStateStore.java:[line 156] |
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|| Subsystem || Report/Notes ||
| Patch URL |
http://issues.apache.org/jira/secure/attachment/12733674/YARN-3633.patch |
| Optional Tests | javadoc javac unit findbugs checkstyle |
| git revision | trunk / 0790275 |
| checkstyle |
https://builds.apache.org/job/PreCommit-YARN-Build/7988/artifact/patchprocess/diffcheckstylehadoop-yarn-server-resourcemanager.txt
|
| whitespace |
https://builds.apache.org/job/PreCommit-YARN-Build/7988/artifact/patchprocess/whitespace.txt
|
| Findbugs warnings |
https://builds.apache.org/job/PreCommit-YARN-Build/7988/artifact/patchprocess/newPatchFindbugsWarningshadoop-yarn-server-resourcemanager.html
|
| hadoop-yarn-server-resourcemanager test log |
https://builds.apache.org/job/PreCommit-YARN-Build/7988/artifact/patchprocess/testrun_hadoop-yarn-server-resourcemanager.txt
|
| Test Results |
https://builds.apache.org/job/PreCommit-YARN-Build/7988/testReport/ |
| Java | 1.7.0_55 |
| uname | Linux asf907.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/7988/console |
This message was automatically generated.
> With Fair Scheduler, cluster can logjam when there are too many queues
> ----------------------------------------------------------------------
>
> Key: YARN-3633
> URL: https://issues.apache.org/jira/browse/YARN-3633
> Project: Hadoop YARN
> Issue Type: Bug
> Components: fairscheduler
> Affects Versions: 2.6.0
> Reporter: Rohit Agarwal
> Assignee: Rohit Agarwal
> Priority: Critical
> Attachments: YARN-3633.patch
>
>
> It's possible to logjam a cluster by submitting many applications at once in
> different queues.
> For example, let's say there is a cluster with 20GB of total memory. Let's
> say 4 users submit applications at the same time. The fair share of each
> queue is 5GB. Let's say that maxAMShare is 0.5. So, each queue has at most
> 2.5GB memory for AMs. If all the users requested AMs of size 3GB - the
> cluster logjams. Nothing gets scheduled even when 20GB of resources are
> available.
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