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From "Jason Lowe (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-5039) Applications ACCEPTED but not starting
Date Thu, 05 May 2016 13:40:12 GMT

    [ https://issues.apache.org/jira/browse/YARN-5039?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15272333#comment-15272333
] 

Jason Lowe commented on YARN-5039:
----------------------------------

Yes, if the problem is indeed the same as that reported in YARN-4610 then leaving reservations-continue-looking
enabled by default in 2.7.3 or later will be fine.


> Applications ACCEPTED but not starting
> --------------------------------------
>
>                 Key: YARN-5039
>                 URL: https://issues.apache.org/jira/browse/YARN-5039
>             Project: Hadoop YARN
>          Issue Type: Bug
>    Affects Versions: 2.7.2
>            Reporter: Miles Crawford
>         Attachments: Screen Shot 2016-05-04 at 1.57.19 PM.png, Screen Shot 2016-05-04
at 2.41.22 PM.png, resource-manager-application-starts.log.gz, yarn-yarn-resourcemanager-ip-10-12-47-144.log.gz
>
>
> Often when we submit applications to an incompletely utilized cluster, they sit, unable
to start for no apparent reason.
> There are multiple nodes in the cluster with available resources, but the resourcemanger
logs show that scheduling is being skipped. The scheduling is skipped because the application
itself has reserved the node? I'm not sure how to interpret this log output:
> {code}
> 2016-05-04 20:19:21,315 INFO org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler
(ResourceManager Event Processor): Trying to fulfill reservation for application application_1462291866507_0025
on node: ip-10-12-43-54.us-west-2.compute.internal:8041
> 2016-05-04 20:19:21,316 INFO org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue
(ResourceManager Event Processor): Reserved container  application=application_1462291866507_0025
resource=<memory:50688, vCores:1> queue=default: capacity=1.0, absoluteCapacity=1.0,
usedResources=<memory:1894464, vCores:33>, usedCapacity=0.7126589, absoluteUsedCapacity=0.7126589,
numApps=2, numContainers=33 usedCapacity=0.7126589 absoluteUsedCapacity=0.7126589 used=<memory:1894464,
vCores:33> cluster=<memory:2658304, vCores:704>
> 2016-05-04 20:19:21,316 INFO org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler
(ResourceManager Event Processor): Skipping scheduling since node ip-10-12-43-54.us-west-2.compute.internal:8041
is reserved by application appattempt_1462291866507_0025_000001
> 2016-05-04 20:19:22,232 INFO org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler
(ResourceManager Event Processor): Trying to fulfill reservation for application application_1462291866507_0025
on node: ip-10-12-43-53.us-west-2.compute.internal:8041
> 2016-05-04 20:19:22,232 INFO org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue
(ResourceManager Event Processor): Reserved container  application=application_1462291866507_0025
resource=<memory:50688, vCores:1> queue=default: capacity=1.0, absoluteCapacity=1.0,
usedResources=<memory:1894464, vCores:33>, usedCapacity=0.7126589, absoluteUsedCapacity=0.7126589,
numApps=2, numContainers=33 usedCapacity=0.7126589 absoluteUsedCapacity=0.7126589 used=<memory:1894464,
vCores:33> cluster=<memory:2658304, vCores:704>
> 2016-05-04 20:19:22,232 INFO org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler
(ResourceManager Event Processor): Skipping scheduling since node ip-10-12-43-53.us-west-2.compute.internal:8041
is reserved by application appattempt_1462291866507_0025_000001
> 2016-05-04 20:19:22,316 INFO org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler
(ResourceManager Event Processor): Trying to fulfill reservation for application application_1462291866507_0025
on node: ip-10-12-43-54.us-west-2.compute.internal:8041
> 2016-05-04 20:19:22,316 INFO org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue
(ResourceManager Event Processor): Reserved container  application=application_1462291866507_0025
resource=<memory:50688, vCores:1> queue=default: capacity=1.0, absoluteCapacity=1.0,
usedResources=<memory:1894464, vCores:33>, usedCapacity=0.7126589, absoluteUsedCapacity=0.7126589,
numApps=2, numContainers=33 usedCapacity=0.7126589 absoluteUsedCapacity=0.7126589 used=<memory:1894464,
vCores:33> cluster=<memory:2658304, vCores:704>
> 2016-05-04 20:19:22,316 INFO org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler
(ResourceManager Event Processor): Skipping scheduling since node ip-10-12-43-54.us-west-2.compute.internal:8041
is reserved by application appattempt_1462291866507_0025_000001
> {code}



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