subject:"\[jira\] \[Commented\] \(YARN\-10559\) Fair sharing intra\-queue preemption support in Capacity Scheduler"

[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

2022-04-03 Thread VADAGA ANANYO RAO (Jira)



[ 
https://issues.apache.org/jira/browse/YARN-10559?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17516619#comment-17516619
 ] 

VADAGA ANANYO RAO commented on YARN-10559:
--

Hi [~bteke] , please feel free to take this task over.

Thank you

> Fair sharing intra-queue preemption support in Capacity Scheduler
> -
>
> Key: YARN-10559
> URL: https://issues.apache.org/jira/browse/YARN-10559
> Project: Hadoop YARN
>  Issue Type: Improvement
>  Components: capacityscheduler
>Affects Versions: 3.1.4
>Reporter: VADAGA ANANYO RAO
>Assignee: VADAGA ANANYO RAO
>Priority: Major
> Attachments: FairOP_preemption-design_doc_v1.pdf, 
> FairOP_preemption-design_doc_v2.pdf, YARN-10559.0001.patch, 
> YARN-10559.0002.patch, YARN-10559.0003.patch, YARN-10559.0004.patch, 
> YARN-10559.0005.patch, YARN-10559.0006.patch, YARN-10559.0007.patch, 
> YARN-10559.0008.patch, YARN-10559.0009.patch
>
>   Original Estimate: 168h
>  Remaining Estimate: 168h
>
> Usecase:
> Due to the way Capacity Scheduler preemption works, If a single user submits 
> a large application to a queue (using 100% of resources), that job will not 
> be preempted by future applications from the same user within the same queue. 
> This implies that the later applications will be forced to wait for 
> completion of the long running application. This prevents multiple long 
> running, large, applications from running concurrently.
> Support fair sharing among apps while preempting applications from same queue.



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[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

2022-03-28 Thread Benjamin Teke (Jira)



[ 
https://issues.apache.org/jira/browse/YARN-10559?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17513547#comment-17513547
 ] 

Benjamin Teke commented on YARN-10559:
--

[~ananyo_rao] since this is pending for a while now and the patch doesn't apply 
to trunk anymore, do you plan to update it? If not, would you mind if I take 
over managing/updating it?

> Fair sharing intra-queue preemption support in Capacity Scheduler
> -
>
> Key: YARN-10559
> URL: https://issues.apache.org/jira/browse/YARN-10559
> Project: Hadoop YARN
>  Issue Type: Improvement
>  Components: capacityscheduler
>Affects Versions: 3.1.4
>Reporter: VADAGA ANANYO RAO
>Assignee: VADAGA ANANYO RAO
>Priority: Major
> Attachments: FairOP_preemption-design_doc_v1.pdf, 
> FairOP_preemption-design_doc_v2.pdf, YARN-10559.0001.patch, 
> YARN-10559.0002.patch, YARN-10559.0003.patch, YARN-10559.0004.patch, 
> YARN-10559.0005.patch, YARN-10559.0006.patch, YARN-10559.0007.patch, 
> YARN-10559.0008.patch, YARN-10559.0009.patch
>
>   Original Estimate: 168h
>  Remaining Estimate: 168h
>
> Usecase:
> Due to the way Capacity Scheduler preemption works, If a single user submits 
> a large application to a queue (using 100% of resources), that job will not 
> be preempted by future applications from the same user within the same queue. 
> This implies that the later applications will be forced to wait for 
> completion of the long running application. This prevents multiple long 
> running, large, applications from running concurrently.
> Support fair sharing among apps while preempting applications from same queue.



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[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

2021-04-13 Thread VADAGA ANANYO RAO (Jira)



[ 
https://issues.apache.org/jira/browse/YARN-10559?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17319929#comment-17319929
 ] 

VADAGA ANANYO RAO commented on YARN-10559:
--

[~epayne], sorry for seeing your comment so late. We have tested this feature 
with following configs:
Queue Properties:
'yarn.scheduler.capacity..ordering-policy': 'fair'

Scheduler configurations:
'yarn.resourcemanager.scheduler.monitor.enable': 'true',
'yarn.resourcemanager.scheduler.monitor.policies' : 
'org.apache.hadoop.yarn.server.resourcemanager.monitor.capacity.ProportionalCapacityPreemptionPolicy',
'yarn.resourcemanager.monitor.capacity.preemption.intra-queue-preemption.enabled':
 'true'
Post this, we submit job1 from user1 to a leaf queue. When job1 completely uses 
up the queue capacity, we trigger job2 from user1 to the same leaf queue. We 
can observe preemption kicking in for job2 from job1.
I am not sure of the exact error you are facing. If you can provide some more 
details of the problems you are facing, I can try and help out with it.

Thank you :)

> Fair sharing intra-queue preemption support in Capacity Scheduler
> -
>
> Key: YARN-10559
> URL: https://issues.apache.org/jira/browse/YARN-10559
> Project: Hadoop YARN
>  Issue Type: Improvement
>  Components: capacityscheduler
>Affects Versions: 3.1.4
>Reporter: VADAGA ANANYO RAO
>Assignee: VADAGA ANANYO RAO
>Priority: Major
> Attachments: FairOP_preemption-design_doc_v1.pdf, 
> FairOP_preemption-design_doc_v2.pdf, YARN-10559.0001.patch, 
> YARN-10559.0002.patch, YARN-10559.0003.patch, YARN-10559.0004.patch, 
> YARN-10559.0005.patch, YARN-10559.0006.patch, YARN-10559.0007.patch, 
> YARN-10559.0008.patch, YARN-10559.0009.patch
>
>   Original Estimate: 168h
>  Remaining Estimate: 168h
>
> Usecase:
> Due to the way Capacity Scheduler preemption works, If a single user submits 
> a large application to a queue (using 100% of resources), that job will not 
> be preempted by future applications from the same user within the same queue. 
> This implies that the later applications will be forced to wait for 
> completion of the long running application. This prevents multiple long 
> running, large, applications from running concurrently.
> Support fair sharing among apps while preempting applications from same queue.



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[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

2021-03-04 Thread Eric Payne (Jira)



[ 
https://issues.apache.org/jira/browse/YARN-10559?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17295609#comment-17295609
 ] 

Eric Payne commented on YARN-10559:
---

[~ananyo_rao], I am still walking through the changes of the latest patch. 
However, I would like to let you know that when I installed the patch and ran 
it on a 6-node cluster, intra-queue preemption did not work at all, not even 
for different users. I verified that it was not my configuration by installing 
a build of trunk and doing the same manual test. I have not been able to try 
and debug the patch yet.

> Fair sharing intra-queue preemption support in Capacity Scheduler
> -
>
> Key: YARN-10559
> URL: https://issues.apache.org/jira/browse/YARN-10559
> Project: Hadoop YARN
>  Issue Type: Improvement
>  Components: capacityscheduler
>Affects Versions: 3.1.4
>Reporter: VADAGA ANANYO RAO
>Assignee: VADAGA ANANYO RAO
>Priority: Major
> Attachments: FairOP_preemption-design_doc_v1.pdf, 
> FairOP_preemption-design_doc_v2.pdf, YARN-10559.0001.patch, 
> YARN-10559.0002.patch, YARN-10559.0003.patch, YARN-10559.0004.patch, 
> YARN-10559.0005.patch, YARN-10559.0006.patch, YARN-10559.0007.patch, 
> YARN-10559.0008.patch, YARN-10559.0009.patch
>
>   Original Estimate: 168h
>  Remaining Estimate: 168h
>
> Usecase:
> Due to the way Capacity Scheduler preemption works, If a single user submits 
> a large application to a queue (using 100% of resources), that job will not 
> be preempted by future applications from the same user within the same queue. 
> This implies that the later applications will be forced to wait for 
> completion of the long running application. This prevents multiple long 
> running, large, applications from running concurrently.
> Support fair sharing among apps while preempting applications from same queue.



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[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

2021-03-03 Thread Eric Payne (Jira)



[ 
https://issues.apache.org/jira/browse/YARN-10559?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17294871#comment-17294871
 ] 

Eric Payne commented on YARN-10559:
---

[~ananyo_rao], sorry for the delay. I'm trying to get my head around what I 
think the proper solution should be for this problem. I think that the crux of 
it is that in 
{{FifoIntraQueuePreemptionPlugin#validateOutSameAppPriorityFromDemand}}, it 
does not allow preemption if from the same user, and in 
{{FifoIntraQueuePreemptionPlugin#skipContainerBasedOnIntraQueuePolicy}} it 
doesn't allow the user to get below it's user limit.

In this case, we don't care if the preemption will cause the user to go below 
it's user limit because we expect the container to go back to the same user, 
just in a different app. However, since the state of the queue and cluster is 
always in flux, there is no guarantee that the preempted container will go to 
the app we expect it to.

Simply skipping these 2 checks is not sufficient either, since that will cause 
over-preemption to happen, with containers being preempted and then being 
assigned back to the same app it preempted them from.

> Fair sharing intra-queue preemption support in Capacity Scheduler
> -
>
> Key: YARN-10559
> URL: https://issues.apache.org/jira/browse/YARN-10559
> Project: Hadoop YARN
>  Issue Type: Improvement
>  Components: capacityscheduler
>Affects Versions: 3.1.4
>Reporter: VADAGA ANANYO RAO
>Assignee: VADAGA ANANYO RAO
>Priority: Major
> Attachments: FairOP_preemption-design_doc_v1.pdf, 
> FairOP_preemption-design_doc_v2.pdf, YARN-10559.0001.patch, 
> YARN-10559.0002.patch, YARN-10559.0003.patch, YARN-10559.0004.patch, 
> YARN-10559.0005.patch, YARN-10559.0006.patch, YARN-10559.0007.patch, 
> YARN-10559.0008.patch, YARN-10559.0009.patch
>
>   Original Estimate: 168h
>  Remaining Estimate: 168h
>
> Usecase:
> Due to the way Capacity Scheduler preemption works, If a single user submits 
> a large application to a queue (using 100% of resources), that job will not 
> be preempted by future applications from the same user within the same queue. 
> This implies that the later applications will be forced to wait for 
> completion of the long running application. This prevents multiple long 
> running, large, applications from running concurrently.
> Support fair sharing among apps while preempting applications from same queue.



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[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

2021-02-05 Thread Hadoop QA (Jira)



[ 
https://issues.apache.org/jira/browse/YARN-10559?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17279919#comment-17279919
 ] 

Hadoop QA commented on YARN-10559:
--

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[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

2021-02-01 Thread VADAGA ANANYO RAO (Jira)



[ 
https://issues.apache.org/jira/browse/YARN-10559?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17276904#comment-17276904
 ] 

VADAGA ANANYO RAO commented on YARN-10559:
--

Hi [~epayne], thank you for your earlier response. We wanted to get your 
suggestions on better handling multiple user cases. Currently, we are 
considering a formula to calculate FairShare per app like:
{code:java}
fairSharePerUser = total Queue Capacity / # of users
foreach user:
  if(tq.leafqueue.getUserLimit == 100) 
fairSharePerApp = fairSharePerUser / # of apps of that user;
  else
fairSharePerApp = UL / # of apps of that user;
{code}
So, according to the above formula, Say we have a scenario with 2 users and 
UserLimit = 100%,

 

User1 (UL = 100%, fairSharePerUser = 50%)
 * App1 (fairSharePerApp = 50%)

User2 (UL = 100%, fairSharePerUser = 50%)
 * App2 (fairSharePerApp = 25%)
 * App3 (fairSharePerApp = 25%)

Do you see any shortcomings in this formula or can suggest better ways of 
handling multiple user issue? I would really appreciate it :)
cc: [~sunilg] [~wangda]

> Fair sharing intra-queue preemption support in Capacity Scheduler
> -
>
> Key: YARN-10559
> URL: https://issues.apache.org/jira/browse/YARN-10559
> Project: Hadoop YARN
>  Issue Type: Improvement
>  Components: capacityscheduler
>Affects Versions: 3.1.4
>Reporter: VADAGA ANANYO RAO
>Assignee: VADAGA ANANYO RAO
>Priority: Major
> Attachments: FairOP_preemption-design_doc_v1.pdf, 
> FairOP_preemption-design_doc_v2.pdf, YARN-10559.0001.patch, 
> YARN-10559.0002.patch, YARN-10559.0003.patch, YARN-10559.0004.patch, 
> YARN-10559.0005.patch, YARN-10559.0006.patch, YARN-10559.0007.patch, 
> YARN-10559.0008.patch
>
>   Original Estimate: 168h
>  Remaining Estimate: 168h
>
> Usecase:
> Due to the way Capacity Scheduler preemption works, If a single user submits 
> a large application to a queue (using 100% of resources), that job will not 
> be preempted by future applications from the same user within the same queue. 
> This implies that the later applications will be forced to wait for 
> completion of the long running application. This prevents multiple long 
> running, large, applications from running concurrently.
> Support fair sharing among apps while preempting applications from same queue.



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[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

2021-02-01 Thread VADAGA ANANYO RAO (Jira)



[ 
https://issues.apache.org/jira/browse/YARN-10559?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17276425#comment-17276425
 ] 

VADAGA ANANYO RAO commented on YARN-10559:
--

[~epayne], thanks for catching this. This is a major bug in the code. I am 
already working for addressing multiple user scenarios and should be able to 
get a patch to fix this in a couple of days.

> Fair sharing intra-queue preemption support in Capacity Scheduler
> -
>
> Key: YARN-10559
> URL: https://issues.apache.org/jira/browse/YARN-10559
> Project: Hadoop YARN
>  Issue Type: Improvement
>  Components: capacityscheduler
>Affects Versions: 3.1.4
>Reporter: VADAGA ANANYO RAO
>Assignee: VADAGA ANANYO RAO
>Priority: Major
> Attachments: FairOP_preemption-design_doc_v1.pdf, 
> FairOP_preemption-design_doc_v2.pdf, YARN-10559.0001.patch, 
> YARN-10559.0002.patch, YARN-10559.0003.patch, YARN-10559.0004.patch, 
> YARN-10559.0005.patch, YARN-10559.0006.patch, YARN-10559.0007.patch, 
> YARN-10559.0008.patch
>
>   Original Estimate: 168h
>  Remaining Estimate: 168h
>
> Usecase:
> Due to the way Capacity Scheduler preemption works, If a single user submits 
> a large application to a queue (using 100% of resources), that job will not 
> be preempted by future applications from the same user within the same queue. 
> This implies that the later applications will be forced to wait for 
> completion of the long running application. This prevents multiple long 
> running, large, applications from running concurrently.
> Support fair sharing among apps while preempting applications from same queue.



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[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

2021-02-01 Thread Eric Payne (Jira)



[ 
https://issues.apache.org/jira/browse/YARN-10559?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17276404#comment-17276404
 ] 

Eric Payne commented on YARN-10559:
---

[~ananyo_rao], sorry for the delay. I'm still reviewing the changes, but I have 
one concern with the requirements.

{code:title=FifoIntraQueuePreemptionPlugin#setFairShareForApps}
+   * we firstly ensure all the apps in the queue get equal resources.
{code}
I don't think this is exactly correct. When a queue in the Capacity Scheduler 
has FairOrderingPolicy set, it will grow each user's share of the resources at 
a fair pace. If user1 has app1 and user2 has app2 and app3, and if all 3 apps 
are requesting resources, app1 will receive resources faster than app2. app2 
and app3 together will receive resources at roughly the same rate as app1.
The total of resources assigned to user1 and user2 will grow at roughly the 
same amount, but the apps themselves will not receive resources at the same 
rate.

So, when we preempt, we want to mimic that same behavior. I'm still trying to 
fully understand the code, so it may be that the code actually does what I 
said, but at the very least, the statement is misleading and I want to make 
sure we are on the same page regarding the requirements.



> Fair sharing intra-queue preemption support in Capacity Scheduler
> -
>
> Key: YARN-10559
> URL: https://issues.apache.org/jira/browse/YARN-10559
> Project: Hadoop YARN
>  Issue Type: Improvement
>  Components: capacityscheduler
>Affects Versions: 3.1.4
>Reporter: VADAGA ANANYO RAO
>Assignee: VADAGA ANANYO RAO
>Priority: Major
> Attachments: FairOP_preemption-design_doc_v1.pdf, 
> FairOP_preemption-design_doc_v2.pdf, YARN-10559.0001.patch, 
> YARN-10559.0002.patch, YARN-10559.0003.patch, YARN-10559.0004.patch, 
> YARN-10559.0005.patch, YARN-10559.0006.patch, YARN-10559.0007.patch, 
> YARN-10559.0008.patch
>
>   Original Estimate: 168h
>  Remaining Estimate: 168h
>
> Usecase:
> Due to the way Capacity Scheduler preemption works, If a single user submits 
> a large application to a queue (using 100% of resources), that job will not 
> be preempted by future applications from the same user within the same queue. 
> This implies that the later applications will be forced to wait for 
> completion of the long running application. This prevents multiple long 
> running, large, applications from running concurrently.
> Support fair sharing among apps while preempting applications from same queue.



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[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

2021-01-25 Thread Hadoop QA (Jira)



[ 
https://issues.apache.org/jira/browse/YARN-10559?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17271305#comment-17271305
 ] 

Hadoop QA commented on YARN-10559:
--

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| {color:green}+1{color} | {color:green} {color} | {color:green}  0m  0s{color} 
| {color:green}test4tests{color} | {color:green} The patch appears to include 4 
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[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

2021-01-21 Thread Eric Payne (Jira)



[ 
https://issues.apache.org/jira/browse/YARN-10559?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17269420#comment-17269420
 ] 

Eric Payne commented on YARN-10559:
---

Thanks [~ananyo_rao] for bringing up this issue and for providing a patch. 
Sorry for my delay in responding.

I think the overall requirements seem reasonable. Preemption is supposed to 
mimic what the capacity scheduler would do when a queue has FairOrderingPolicy 
set if all jobs were launched simultaneously. So preempting from a user's first 
app to give to the same user's second app makes sense.

The only caveat I would add is that (as is the case with all preempted 
containers) just because the preemption monitor decides to preempt a container 
because of a particular request, that doesn't mean that the capacity scheduler 
will then assign the container as expected. The states of the queue and cluster 
are constantly in flux and so a container preempted for one app could easily go 
to a different app in the same queue or a different queue.

I will try to look at the changes next week.

> Fair sharing intra-queue preemption support in Capacity Scheduler
> -
>
> Key: YARN-10559
> URL: https://issues.apache.org/jira/browse/YARN-10559
> Project: Hadoop YARN
>  Issue Type: Improvement
>  Components: capacityscheduler
>Affects Versions: 3.1.4
>Reporter: VADAGA ANANYO RAO
>Assignee: VADAGA ANANYO RAO
>Priority: Major
> Attachments: FairOP_preemption-design_doc_v1.pdf, 
> FairOP_preemption-design_doc_v2.pdf, YARN-10559.0001.patch, 
> YARN-10559.0002.patch, YARN-10559.0003.patch, YARN-10559.0004.patch, 
> YARN-10559.0005.patch, YARN-10559.0006.patch, YARN-10559.0007.patch, 
> YARN-10559.0008.patch
>
>   Original Estimate: 168h
>  Remaining Estimate: 168h
>
> Usecase:
> Due to the way Capacity Scheduler preemption works, If a single user submits 
> a large application to a queue (using 100% of resources), that job will not 
> be preempted by future applications from the same user within the same queue. 
> This implies that the later applications will be forced to wait for 
> completion of the long running application. This prevents multiple long 
> running, large, applications from running concurrently.
> Support fair sharing among apps while preempting applications from same queue.



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[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

2021-01-20 Thread Hadoop QA (Jira)



[ 
https://issues.apache.org/jira/browse/YARN-10559?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17269050#comment-17269050
 ] 

Hadoop QA commented on YARN-10559:
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found. {color} |
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[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

2021-01-19 Thread Hadoop QA (Jira)



[ 
https://issues.apache.org/jira/browse/YARN-10559?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17267907#comment-17267907
 ] 

Hadoop QA commented on YARN-10559:
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0s{color} | {color:green}{color} | {color:green} The patch does not contain any 
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| {color:green}test4tests{color} | {color:green} The patch appears to include 3 
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[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

2021-01-18 Thread Hadoop QA (Jira)



[ 
https://issues.apache.org/jira/browse/YARN-10559?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17267659#comment-17267659
 ] 

Hadoop QA commented on YARN-10559:
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33s{color} | {color:green}{color} | {color:green} the

[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

2021-01-18 Thread Hadoop QA (Jira)



[ 
https://issues.apache.org/jira/browse/YARN-10559?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17267501#comment-17267501
 ] 

Hadoop QA commented on YARN-10559:
--

| (x) *{color:red}-1 overall{color}* |
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| {color:green}+1{color} | {color:green} @author {color} | {color:green}  0m  
0s{color} | {color:green}{color} | {color:green} The patch does not contain any 
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| {color:green}test4tests{color} | {color:green} The patch appears to include 3 
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| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
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| {color:blue}0{color} | {color:blue} spotbugs {color} | {color:blue}  1m 
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{color:orange}https://ci-hadoop.apache.org/job/PreCommit-YARN-Build/510/artifact/out/diff-checkstyle-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-resourcemanager.txt{color}
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[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

2021-01-18 Thread Hadoop QA (Jira)



[ 
https://issues.apache.org/jira/browse/YARN-10559?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17267480#comment-17267480
 ] 

Hadoop QA commented on YARN-10559:
--

| (x) *{color:red}-1 overall{color}* |
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| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue}  1m 
22s{color} | {color:blue}{color} | {color:blue} Docker mode activated. {color} |
|| || || || {color:brown} Prechecks {color} || ||
| {color:green}+1{color} | {color:green} dupname {color} | {color:green}  0m  
0s{color} | {color:green}{color} | {color:green} No case conflicting files 
found. {color} |
| {color:green}+1{color} | {color:green} @author {color} | {color:green}  0m  
0s{color} | {color:green}{color} | {color:green} The patch does not contain any 
@author tags. {color} |
| {color:green}+1{color} | {color:green} {color} | {color:green}  0m  0s{color} 
| {color:green}test4tests{color} | {color:green} The patch appears to include 3 
new or modified test files. {color} |
|| || || || {color:brown} trunk Compile Tests {color} || ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 36m 
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| {color:green}+1{color} | {color:green} shadedclient {color} | {color:green} 
18m 54s{color} | {color:green}{color} | {color:green} branch has no errors when 
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42s{color} | {color:green}{color} | {color:green} trunk passed with JDK 
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| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
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{color:red}https://ci-hadoop.apache.org/job/PreCommit-YARN-Build/509/artifact/out/diff-compile-javac-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-resourcemanager-jdkUbuntu-11.0.9.1+1-Ubuntu-0ubuntu1.18.04.txt{color}
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[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

2021-01-18 Thread VADAGA ANANYO RAO (Jira)



[ 
https://issues.apache.org/jira/browse/YARN-10559?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17267394#comment-17267394
 ] 

VADAGA ANANYO RAO commented on YARN-10559:
--

Updated latest patch to skip user headroom calculations in case of 
FairOrderingPolicy. This was missed in the previous patch.

Skipping user headroom calculation is required because 2 jobs from the same 
user may have unfair resource distribution and so we may still want to consider 
a user for preemption, even if the user has reached its max headroom.

cc: [~sunilg]

> Fair sharing intra-queue preemption support in Capacity Scheduler
> -
>
> Key: YARN-10559
> URL: https://issues.apache.org/jira/browse/YARN-10559
> Project: Hadoop YARN
>  Issue Type: Improvement
>  Components: capacityscheduler
>Affects Versions: 3.1.4
>Reporter: VADAGA ANANYO RAO
>Assignee: VADAGA ANANYO RAO
>Priority: Major
> Attachments: FairOP_preemption-design_doc_v1.pdf, 
> FairOP_preemption-design_doc_v2.pdf, YARN-10559.0001.patch, 
> YARN-10559.0002.patch, YARN-10559.0003.patch, YARN-10559.0004.patch, 
> YARN-10559.0005.patch, YARN-10559.0006.patch
>
>   Original Estimate: 168h
>  Remaining Estimate: 168h
>
> Usecase:
> Due to the way Capacity Scheduler preemption works, If a single user submits 
> a large application to a queue (using 100% of resources), that job will not 
> be preempted by future applications from the same user within the same queue. 
> This implies that the later applications will be forced to wait for 
> completion of the long running application. This prevents multiple long 
> running, large, applications from running concurrently.
> Support fair sharing among apps while preempting applications from same queue.



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[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

2021-01-12 Thread VADAGA ANANYO RAO (Jira)



[ 
https://issues.apache.org/jira/browse/YARN-10559?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17263252#comment-17263252
 ] 

VADAGA ANANYO RAO commented on YARN-10559:
--

Just FYI, the UT failure is not related to the code changes.

> Fair sharing intra-queue preemption support in Capacity Scheduler
> -
>
> Key: YARN-10559
> URL: https://issues.apache.org/jira/browse/YARN-10559
> Project: Hadoop YARN
>  Issue Type: Improvement
>  Components: capacityscheduler
>Affects Versions: 3.1.4
>Reporter: VADAGA ANANYO RAO
>Assignee: VADAGA ANANYO RAO
>Priority: Major
> Attachments: FairOP_preemption-design_doc_v1.pdf, 
> FairOP_preemption-design_doc_v2.pdf, YARN-10559.0001.patch, 
> YARN-10559.0002.patch, YARN-10559.0003.patch, YARN-10559.0004.patch, 
> YARN-10559.0005.patch
>
>   Original Estimate: 168h
>  Remaining Estimate: 168h
>
> Usecase:
> Due to the way Capacity Scheduler preemption works, If a single user submits 
> a large application to a queue (using 100% of resources), that job will not 
> be preempted by future applications from the same user within the same queue. 
> This implies that the later applications will be forced to wait for 
> completion of the long running application. This prevents multiple long 
> running, large, applications from running concurrently.
> Support fair sharing among apps while preempting applications from same queue.



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[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

2021-01-12 Thread Hadoop QA (Jira)



[ 
https://issues.apache.org/jira/browse/YARN-10559?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17263233#comment-17263233
 ] 

Hadoop QA commented on YARN-10559:
--

| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime ||  Logfile || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue}  1m  
5s{color} | {color:blue}{color} | {color:blue} Docker mode activated. {color} |
|| || || || {color:brown} Prechecks {color} || ||
| {color:green}+1{color} | {color:green} dupname {color} | {color:green}  0m  
0s{color} | {color:green}{color} | {color:green} No case conflicting files 
found. {color} |
| {color:green}+1{color} | {color:green} @author {color} | {color:green}  0m  
0s{color} | {color:green}{color} | {color:green} The patch does not contain any 
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| {color:green}+1{color} | {color:green} {color} | {color:green}  0m  0s{color} 
| {color:green}test4tests{color} | {color:green} The patch appears to include 1 
new or modified test files. {color} |
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| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 33m 
47s{color} | {color:green}{color} | {color:green} trunk passed {color} |
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40s{color} | {color:green}{color} | {color:green} trunk passed with JDK 
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[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

2021-01-12 Thread Hadoop QA (Jira)



[ 
https://issues.apache.org/jira/browse/YARN-10559?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17263220#comment-17263220
 ] 

Hadoop QA commented on YARN-10559:
--

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| {color:green}+1{color} | {color:green} {color} | {color:green}  0m  0s{color} 
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| {color:blue}0{color} | {color:blue} spotbugs {color} | {color:blue}  1m 
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[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

2021-01-11 Thread VADAGA ANANYO RAO (Jira)



[ 
https://issues.apache.org/jira/browse/YARN-10559?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17263135#comment-17263135
 ] 

VADAGA ANANYO RAO commented on YARN-10559:
--

Thank you [~sunilg] and [~wangda] for the comments.

I have tried addressing the comments in the new patch.

Following are the changes:
 # Fixed the *checkstyle* warnings.
 # Added *check if 0 active apps* are there in the leaf queue. _Note:_ we won't 
have to check for 0 active apps in users because users are temp objects 
initialised when apps are getting created. So each user will at least have 1 
corresponding active app.
 # Ensured *fair-share is non-negative* value. However, fair-share can be 0 
value. So not adding checks for that. Fair-share can be 0 in following 
situations _(its a non-exhaustive list of conditions)_:
 ## User-limit is somehow 0 for a user
 ## queueReassignableResources are 0
 ## No running apps in the queue
 # If a container needs to be skipped from preemption in 
*skipContainerBasedOnIntraQueuePolicy*, we will continue checks for other 
containers of the app instead of breaking from the app.
 # Added additional *logs* for when we reduce actually_to_be_preempted of an 
app.

Thank you [~sunilg] for catching these points. Please let me know if some 
points needs to be addressed.

> Fair sharing intra-queue preemption support in Capacity Scheduler
> -
>
> Key: YARN-10559
> URL: https://issues.apache.org/jira/browse/YARN-10559
> Project: Hadoop YARN
>  Issue Type: Improvement
>  Components: capacityscheduler
>Affects Versions: 3.1.4
>Reporter: VADAGA ANANYO RAO
>Assignee: VADAGA ANANYO RAO
>Priority: Major
> Attachments: FairOP_preemption-design_doc_v1.pdf, 
> FairOP_preemption-design_doc_v2.pdf, YARN-10559.0001.patch, 
> YARN-10559.0002.patch, YARN-10559.0003.patch, YARN-10559.0004.patch, 
> YARN-10559.0005.patch
>
>   Original Estimate: 168h
>  Remaining Estimate: 168h
>
> Usecase:
> Due to the way Capacity Scheduler preemption works, If a single user submits 
> a large application to a queue (using 100% of resources), that job will not 
> be preempted by future applications from the same user within the same queue. 
> This implies that the later applications will be forced to wait for 
> completion of the long running application. This prevents multiple long 
> running, large, applications from running concurrently.
> Support fair sharing among apps while preempting applications from same queue.



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[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

2021-01-11 Thread Sunil G (Jira)



[ 
https://issues.apache.org/jira/browse/YARN-10559?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17263095#comment-17263095
 ] 

Sunil G commented on YARN-10559:


Also you may need to change *break* statement to *continue* in 
skipContainerBasedOnIntraQueuePolicy method.

> Fair sharing intra-queue preemption support in Capacity Scheduler
> -
>
> Key: YARN-10559
> URL: https://issues.apache.org/jira/browse/YARN-10559
> Project: Hadoop YARN
>  Issue Type: Improvement
>  Components: capacityscheduler
>Affects Versions: 3.1.4
>Reporter: VADAGA ANANYO RAO
>Assignee: VADAGA ANANYO RAO
>Priority: Major
> Attachments: FairOP_preemption-design_doc_v1.pdf, 
> FairOP_preemption-design_doc_v2.pdf, YARN-10559.0001.patch, 
> YARN-10559.0002.patch, YARN-10559.0003.patch, YARN-10559.0004.patch
>
>   Original Estimate: 168h
>  Remaining Estimate: 168h
>
> Usecase:
> Due to the way Capacity Scheduler preemption works, If a single user submits 
> a large application to a queue (using 100% of resources), that job will not 
> be preempted by future applications from the same user within the same queue. 
> This implies that the later applications will be forced to wait for 
> completion of the long running application. This prevents multiple long 
> running, large, applications from running concurrently.
> Support fair sharing among apps while preempting applications from same queue.



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[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

2021-01-11 Thread Sunil G (Jira)



[ 
https://issues.apache.org/jira/browse/YARN-10559?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17263089#comment-17263089
 ] 

Sunil G commented on YARN-10559:


[~ananyo_rao] Thanks for the efforts. Few minor comments.
 # Please take a look at the newly introduced 7 checkstyle warnings and help to 
check how many of them can be fixed. 
[https://ci-hadoop.apache.org/job/PreCommit-YARN-Build/457/artifact/out/diff-checkstyle-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-resourcemanager.txt]
 # In setFairShareForApps, there could be some chances for divide by 0. Let me 
quote those here.
{code:java}
int numOfAppsInQueue = tq.leafQueue.getAllApplications().size();
Resource fairShareAcrossApps = Resources.divideAndCeil(
  this.rc, queueReassignableResource, numOfAppsInQueue);
{code}
We are handling this internally. but still, it's better to add a check.

 # It's better to ensure two points here. We should get a non-negative resource 
and its better to check & ensurefairShareForApp cannot be 0
{code:java}
Resource fairShareForApp = Resources.min(
rc, clusterResource, fairShareAcrossApps, fairShareWithinUL);{code}

> Fair sharing intra-queue preemption support in Capacity Scheduler
> -
>
> Key: YARN-10559
> URL: https://issues.apache.org/jira/browse/YARN-10559
> Project: Hadoop YARN
>  Issue Type: Improvement
>  Components: capacityscheduler
>Affects Versions: 3.1.4
>Reporter: VADAGA ANANYO RAO
>Assignee: VADAGA ANANYO RAO
>Priority: Major
> Attachments: FairOP_preemption-design_doc_v1.pdf, 
> FairOP_preemption-design_doc_v2.pdf, YARN-10559.0001.patch, 
> YARN-10559.0002.patch, YARN-10559.0003.patch, YARN-10559.0004.patch
>
>   Original Estimate: 168h
>  Remaining Estimate: 168h
>
> Usecase:
> Due to the way Capacity Scheduler preemption works, If a single user submits 
> a large application to a queue (using 100% of resources), that job will not 
> be preempted by future applications from the same user within the same queue. 
> This implies that the later applications will be forced to wait for 
> completion of the long running application. This prevents multiple long 
> running, large, applications from running concurrently.
> Support fair sharing among apps while preempting applications from same queue.



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[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

2021-01-11 Thread Wangda Tan (Jira)



[ 
https://issues.apache.org/jira/browse/YARN-10559?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17262813#comment-17262813
 ] 

Wangda Tan commented on YARN-10559:
---

Removed fix version of the Jira.

> Fair sharing intra-queue preemption support in Capacity Scheduler
> -
>
> Key: YARN-10559
> URL: https://issues.apache.org/jira/browse/YARN-10559
> Project: Hadoop YARN
>  Issue Type: Improvement
>  Components: capacityscheduler
>Affects Versions: 3.1.4
>Reporter: VADAGA ANANYO RAO
>Assignee: VADAGA ANANYO RAO
>Priority: Major
> Attachments: FairOP_preemption-design_doc_v1.pdf, 
> FairOP_preemption-design_doc_v2.pdf, YARN-10559.0001.patch, 
> YARN-10559.0002.patch, YARN-10559.0003.patch, YARN-10559.0004.patch
>
>   Original Estimate: 168h
>  Remaining Estimate: 168h
>
> Usecase:
> Due to the way Capacity Scheduler preemption works, If a single user submits 
> a large application to a queue (using 100% of resources), that job will not 
> be preempted by future applications from the same user within the same queue. 
> This implies that the later applications will be forced to wait for 
> completion of the long running application. This prevents multiple long 
> running, large, applications from running concurrently.
> Support fair sharing among apps while preempting applications from same queue.



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[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

2021-01-11 Thread Hadoop QA (Jira)



[ 
https://issues.apache.org/jira/browse/YARN-10559?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17262503#comment-17262503
 ] 

Hadoop QA commented on YARN-10559:
--

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found. {color} |
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| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 
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55s{color} | {color:green}{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} shadedclient {color} | {color:green} 
18m 28s{color} | {color:green}{color} | {color:green} branch has no errors when 
building and testing our client artifacts. {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
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| {color:blue}0{color} | {color:blue} spotbugs {color} | {color:blue}  1m 
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16m 40s{color} | {color:green}{color} | {color:green} patch has no errors when 
building and testing our client artifacts. {color} |
|

[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

2021-01-10 Thread Hadoop QA (Jira)



[ 
https://issues.apache.org/jira/browse/YARN-10559?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17262267#comment-17262267
 ] 

Hadoop QA commented on YARN-10559:
--

| (/) *{color:green}+1 overall{color}* |
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|| || || || {color:brown} Prechecks {color} || ||
| {color:green}+1{color} | {color:green} dupname {color} | {color:green}  0m  
0s{color} | {color:green}{color} | {color:green} No case conflicting files 
found. {color} |
| {color:green}+1{color} | {color:green} @author {color} | {color:green}  0m  
0s{color} | {color:green}{color} | {color:green} The patch does not contain any 
@author tags. {color} |
| {color:green}+1{color} | {color:green} {color} | {color:green}  0m  0s{color} 
| {color:green}test4tests{color} | {color:green} The patch appears to include 1 
new or modified test files. {color} |
|| || || || {color:brown} trunk Compile Tests {color} || ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 23m 
15s{color} | {color:green}{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 
59s{color} | {color:green}{color} | {color:green} trunk passed with JDK 
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| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 
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| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 
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| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  0m 
53s{color} | {color:green}{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} shadedclient {color} | {color:green} 
18m 15s{color} | {color:green}{color} | {color:green} branch has no errors when 
building and testing our client artifacts. {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
38s{color} | {color:green}{color} | {color:green} trunk passed with JDK 
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| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
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| {color:blue}0{color} | {color:blue} spotbugs {color} | {color:blue}  1m 
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{color:orange}https://ci-hadoop.apache.org/job/PreCommit-YARN-Build/451/artifact/out/diff-checkstyle-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-resourcemanager.txt{color}
 | {color:orange} 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager:
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{color} |
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[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

2021-01-08 Thread Hadoop QA (Jira)



[ 
https://issues.apache.org/jira/browse/YARN-10559?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17261335#comment-17261335
 ] 

Hadoop QA commented on YARN-10559:
--

| (x) *{color:red}-1 overall{color}* |
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[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

2021-01-08 Thread Hadoop QA (Jira)



[ 
https://issues.apache.org/jira/browse/YARN-10559?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17261196#comment-17261196
 ] 

Hadoop QA commented on YARN-10559:
--

| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime ||  Logfile || Comment ||
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| {color:green}+1{color} | {color:green} @author {color} | {color:green}  0m  
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| {color:green}+1{color} | {color:green} {color} | {color:green}  0m  0s{color} 
| {color:green}test4tests{color} | {color:green} The patch appears to include 3 
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 | {color:orange} 
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|

[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

2021-01-07 Thread VADAGA ANANYO RAO (Jira)



[ 
https://issues.apache.org/jira/browse/YARN-10559?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17261080#comment-17261080
 ] 

VADAGA ANANYO RAO commented on YARN-10559:
--

[~sunilg] I have updated the latest patch and design doc. The FairShare 
calculation for preemption in this patch is:
{code:java}
fairSharePerApp = total Queue Cap / no: of apps in the queue
idealFairSharePerAppwithUL = UL / no: of apps of that user
if(apps of user * fairSharePerApp > UL)
   fairSharePerApp = idealFairSharePerAppwithUL;
{code}
Say we have 2 users and following scenario1 with UL = 100%:

 
{noformat}
User1: (UL: 100%)
-App1 (used = 50%, pending = 100%, FS = 33%)
-App3 (used = 50%, pending = 100%, FS = 33%)
User2 (UL: 100%)
-App3 (used = 0%, pending = 100%, FS = 33%)
{noformat}
We will take 17% resources from app1 and app2 to give to app3.

Now, say we have 2 users with UL = 50%:
{noformat}
User1: (UL: 50%)
-App1 (used = 50%, pending = 100%, FS = 25%)
-App3 (used = 50%, pending = 100%, FS = 25%)
User2 (UL: 50%)
-App3 (used = 0%, pending = 100%, FS = 33%)

{noformat}
We will take ~17% resources from app1 and app2 to give to app3. We may be 
under-preempting from user1 in this case. But we ensure user2 is not heavily 
starved.
This logic seems to be functioning closest to the FairOrderingPolicy in 
CapacityScheduler.

Comparisons of other considered algorithms is present in design_doc_v2.
Once again, thank you [~sunilg]  for guiding with the design.
[~epayne] [~leftnoteasy] Please do review the latest patch-2.
Thank you.

> Fair sharing intra-queue preemption support in Capacity Scheduler
> -
>
> Key: YARN-10559
> URL: https://issues.apache.org/jira/browse/YARN-10559
> Project: Hadoop YARN
>  Issue Type: Improvement
>  Components: capacityscheduler
>Affects Versions: 3.1.4
>Reporter: VADAGA ANANYO RAO
>Assignee: VADAGA ANANYO RAO
>Priority: Major
> Fix For: 3.1.4
>
> Attachments: FairOP_preemption-design_doc_v1.pdf, 
> FairOP_preemption-design_doc_v2.pdf, YARN-10559.0001.patch, 
> YARN-10559.0002.patch
>
>   Original Estimate: 168h
>  Remaining Estimate: 168h
>
> Usecase:
> Due to the way Capacity Scheduler preemption works, If a single user submits 
> a large application to a queue (using 100% of resources), that job will not 
> be preempted by future applications from the same user within the same queue. 
> This implies that the later applications will be forced to wait for 
> completion of the long running application. This prevents multiple long 
> running, large, applications from running concurrently.
> Support fair sharing among apps while preempting applications from same queue.



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[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

2021-01-05 Thread Sunil G (Jira)



[ 
https://issues.apache.org/jira/browse/YARN-10559?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17258863#comment-17258863
 ] 

Sunil G commented on YARN-10559:


[~epayne], could you please help to take a look in to this improvement.

We got this issue when a single user was using the entire queue and fairness 
based preemption was not happening due to some checks. This is a simple effort 
to fix as an initial approach. 

> Fair sharing intra-queue preemption support in Capacity Scheduler
> -
>
> Key: YARN-10559
> URL: https://issues.apache.org/jira/browse/YARN-10559
> Project: Hadoop YARN
>  Issue Type: Improvement
>  Components: capacityscheduler
>Affects Versions: 3.1.4
>Reporter: VADAGA ANANYO RAO
>Assignee: VADAGA ANANYO RAO
>Priority: Major
> Fix For: 3.1.4
>
> Attachments: FairOP_preemption-design_doc_v1.pdf, 
> YARN-10559.0001.patch
>
>   Original Estimate: 168h
>  Remaining Estimate: 168h
>
> Usecase:
> Due to the way Capacity Scheduler preemption works, If a single user submits 
> a large application to a queue (using 100% of resources), that job will not 
> be preempted by future applications from the same user within the same queue. 
> This implies that the later applications will be forced to wait for 
> completion of the long running application. This prevents multiple long 
> running, large, applications from running concurrently.
> Support fair sharing among apps while preempting applications from same queue.



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[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

2021-01-04 Thread VADAGA ANANYO RAO (Jira)



[ 
https://issues.apache.org/jira/browse/YARN-10559?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17258682#comment-17258682
 ] 

VADAGA ANANYO RAO commented on YARN-10559:
--

[~sunilg] Thank you for helping with the design. Can you please review the 
patch uploaded? In patch-0001, the fair-share for preemption is calculated as: 
*"FairShare per app = UserLimit of the user of the app / Number of apps for 
that user"*.

+ [~wangda]

> Fair sharing intra-queue preemption support in Capacity Scheduler
> -
>
> Key: YARN-10559
> URL: https://issues.apache.org/jira/browse/YARN-10559
> Project: Hadoop YARN
>  Issue Type: Improvement
>  Components: capacityscheduler
>Affects Versions: 3.1.4
>Reporter: VADAGA ANANYO RAO
>Priority: Major
> Fix For: 3.1.4
>
> Attachments: FairOP_preemption-design_doc_v1.pdf, 
> YARN-10559.0001.patch
>
>   Original Estimate: 168h
>  Remaining Estimate: 168h
>
> Usecase:
> Due to the way Capacity Scheduler preemption works, If a single user submits 
> a large application to a queue (using 100% of resources), that job will not 
> be preempted by future applications from the same user within the same queue. 
> This implies that the later applications will be forced to wait for 
> completion of the long running application. This prevents multiple long 
> running, large, applications from running concurrently.
> Support fair sharing among apps while preempting applications from same queue.



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[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

[jira] [Commented] (YARN-10559) Fair sharing intra-queue preemption support in Capacity Scheduler

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