[jira] [Commented] (YARN-8452) FairScheduler.update can take long time if yarn.scheduler.fair.sizebasedweight is on
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https://issues.apache.org/jira/browse/YARN-8452?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17045275#comment-17045275
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Hadoop QA commented on YARN-8452:
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|| Reason || Tests ||
| Failed junit tests |
hadoop.yarn.server.resourcemanager.security.TestDelegationTokenRenewer |
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|| Subsystem || Report/Notes ||
| Docker | Client=19.03.6 Server=19.03.6 Image:yetus/hadoop:c44943d1fc3 |
| JIRA Issue | YARN-8452 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12929228/YARN-8452.003.patch |
| Optional Tests | dupname asflicense compile javac javadoc mvninstall
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| Personality | /testptch/patchprocess/precommit/personality/provided.sh |
| git revision | trunk / 900430b |
| maven | version: Apache Maven 3.3.9 |
| Default Java | 1.8.0_242 |
| findbugs | v3.1.0-RC1 |
| unit |
https://builds.apache.org/job/PreCommit-YARN-Build/25579/artifact/out/patch-unit-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-resourcemanager.txt
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| Test Results |
https://builds.apache.org/job/PreCommit-YARN-Build/25579/testReport/ |
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| modules | C:
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager
U:
hadoop-yarn-project/hadoop
[jira] [Commented] (YARN-8452) FairScheduler.update can take long time if yarn.scheduler.fair.sizebasedweight is on
[
https://issues.apache.org/jira/browse/YARN-8452?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16524161#comment-16524161
]
genericqa commented on YARN-8452:
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|| Subsystem || Report/Notes ||
| Docker | Client=17.05.0-ce Server=17.05.0-ce Image:yetus/hadoop:abb62dd |
| JIRA Issue | YARN-8452 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12929228/YARN-8452.003.patch |
| Optional Tests | asflicense compile javac javadoc mvninstall mvnsite
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| Build tool | maven |
| Personality | /testptch/patchprocess/precommit/personality/provided.sh |
| git revision | trunk / 238fe00 |
| maven | version: Apache Maven 3.3.9 |
| Default Java | 1.8.0_171 |
| findbugs | v3.1.0-RC1 |
| Test Results |
https://builds.apache.org/job/PreCommit-YARN-Build/21113/testReport/ |
| Max. process+thread count | 860 (vs. ulimit of 1) |
| modules | C:
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager
U:
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager
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This message was automatically generated.
> FairScheduler.update can take long
[jira] [Commented] (YARN-8452) FairScheduler.update can take long time if yarn.scheduler.fair.sizebasedweight is on
[ https://issues.apache.org/jira/browse/YARN-8452?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16524035#comment-16524035 ] Miklos Szegedi commented on YARN-8452: -- Thank you for the review [~wilfreds]. I updated the patch. I could imagine certain scenarios, where the lock might be needed but I reordered the assignments to reduce the overhead and the impact of potential issues. > FairScheduler.update can take long time if > yarn.scheduler.fair.sizebasedweight is on > > > Key: YARN-8452 > URL: https://issues.apache.org/jira/browse/YARN-8452 > Project: Hadoop YARN > Issue Type: Bug > Components: fairscheduler >Reporter: Miklos Szegedi >Assignee: Miklos Szegedi >Priority: Major > Attachments: YARN-8452.000.patch, YARN-8452.001.patch, > YARN-8452.002.patch > > > Basically we recalculate the weight every time, even if the inputs did not > change. This causes high cpu usage, if the cluster has lots of apps. -- This message was sent by Atlassian JIRA (v7.6.3#76005) - To unsubscribe, e-mail: yarn-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: yarn-issues-h...@hadoop.apache.org
[jira] [Commented] (YARN-8452) FairScheduler.update can take long time if yarn.scheduler.fair.sizebasedweight is on
[
https://issues.apache.org/jira/browse/YARN-8452?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16523246#comment-16523246
]
Wilfred Spiegelenburg commented on YARN-8452:
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[~szegedim] thank you looking at this optimisation.
I was wondering if we can not make the change even simpler:
* The {{weight == -1}} check is only used the first time after that it is
always true, why not use the {{memoryWeight}} or {{priorityWeight}} not being
set to trigger the first calculation? After the first run those two values will
just be used
{code}
private float weight = 0;
private long weightMemory = -1;
private int weightPriority = -1;
{code}
* The synchronised lock seems to be unneeded.
> FairScheduler.update can take long time if
> yarn.scheduler.fair.sizebasedweight is on
>
>
> Key: YARN-8452
> URL: https://issues.apache.org/jira/browse/YARN-8452
> Project: Hadoop YARN
> Issue Type: Bug
> Components: fairscheduler
>Reporter: Miklos Szegedi
>Assignee: Miklos Szegedi
>Priority: Major
> Attachments: YARN-8452.000.patch
>
>
> Basically we recalculate the weight every time, even if the inputs did not
> change. This causes high cpu usage, if the cluster has lots of apps.
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[jira] [Commented] (YARN-8452) FairScheduler.update can take long time if yarn.scheduler.fair.sizebasedweight is on
[
https://issues.apache.org/jira/browse/YARN-8452?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16520933#comment-16520933
]
genericqa commented on YARN-8452:
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| (/) *{color:green}+1 overall{color}* |
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0s{color} | {color:green} The patch does not contain any @author tags. {color} |
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0s{color} | {color:green} The patch appears to include 1 new or modified test
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|| Subsystem || Report/Notes ||
| Docker | Client=17.05.0-ce Server=17.05.0-ce Image:yetus/hadoop:abb62dd |
| JIRA Issue | YARN-8452 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12928827/YARN-8452.000.patch |
| Optional Tests | asflicense compile javac javadoc mvninstall mvnsite
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| uname | Linux f77e4a8dd0cb 3.13.0-139-generic #188-Ubuntu SMP Tue Jan 9
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| git revision | trunk / 1cdce86 |
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| findbugs | v3.1.0-RC1 |
| Test Results |
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| Max. process+thread count | 943 (vs. ulimit of 1) |
| modules | C:
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager
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> FairScheduler.update can take lon
