[
https://issues.apache.org/jira/browse/YARN-4059?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14704211#comment-14704211
]
Hadoop QA commented on YARN-4059:
---------------------------------
\\
\\
| (x) *{color:red}-1 overall{color}* |
\\
\\
|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | pre-patch | 16m 58s | 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 2 new or modified test files. |
| {color:green}+1{color} | javac | 7m 58s | There were no new javac warning
messages. |
| {color:green}+1{color} | javadoc | 9m 57s | 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:red}-1{color} | checkstyle | 0m 50s | The applied patch generated 1
new checkstyle issues (total was 184, now 185). |
| {color:green}+1{color} | whitespace | 0m 1s | The patch has no lines that
end in whitespace. |
| {color:green}+1{color} | install | 1m 28s | mvn install still works. |
| {color:green}+1{color} | eclipse:eclipse | 0m 33s | The patch built with
eclipse:eclipse. |
| {color:green}+1{color} | findbugs | 1m 32s | The patch does not introduce
any new Findbugs (version 3.0.0) warnings. |
| {color:red}-1{color} | yarn tests | 53m 29s | Tests failed in
hadoop-yarn-server-resourcemanager. |
| | | 93m 15s | |
\\
\\
|| Reason || Tests ||
| Failed unit tests |
hadoop.yarn.server.resourcemanager.scheduler.capacity.TestContainerAllocation |
\\
\\
|| Subsystem || Report/Notes ||
| Patch URL |
http://issues.apache.org/jira/secure/attachment/12751351/YARN-4059.3.patch |
| Optional Tests | javadoc javac unit findbugs checkstyle |
| git revision | trunk / 4e14f79 |
| checkstyle |
https://builds.apache.org/job/PreCommit-YARN-Build/8887/artifact/patchprocess/diffcheckstylehadoop-yarn-server-resourcemanager.txt
|
| hadoop-yarn-server-resourcemanager test log |
https://builds.apache.org/job/PreCommit-YARN-Build/8887/artifact/patchprocess/testrun_hadoop-yarn-server-resourcemanager.txt
|
| Test Results |
https://builds.apache.org/job/PreCommit-YARN-Build/8887/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/8887/console |
This message was automatically generated.
> Preemption should delay assignments back to the preempted queue
> ---------------------------------------------------------------
>
> Key: YARN-4059
> URL: https://issues.apache.org/jira/browse/YARN-4059
> Project: Hadoop YARN
> Issue Type: Improvement
> Reporter: Chang Li
> Assignee: Chang Li
> Attachments: YARN-4059.2.patch, YARN-4059.3.patch, YARN-4059.patch
>
>
> When preempting containers from a queue it can take a while for the other
> queues to fully consume the resources that were freed up, due to delays
> waiting for better locality, etc. Those delays can cause the resources to be
> assigned back to the preempted queue, and then the preemption cycle continues.
> We should consider adding a delay, either based on node heartbeat counts or
> time, to avoid granting containers to a queue that was recently preempted.
> The delay should be sufficient to cover the cycles of the preemption monitor,
> so we won't try to assign containers in-between preemption events for a queue.
> Worst-case scenario for assigning freed resources to other queues is when all
> the other queues want no locality. No locality means only one container is
> assigned per heartbeat, so we need to wait for the entire cluster
> heartbeating in times the number of containers that could run on a single
> node.
> So the "penalty time" for a queue should be the max of either the preemption
> monitor cycle time or the amount of time it takes to allocate the cluster
> with one container per heartbeat. Guessing this will be somewhere around 2
> minutes.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
